LIGHTHOUSE The magazine of the Eddystone Users Group

NDEX

Issues 1-96 combined FULL INDEX

Combination of Anthony Richards Indexes in searchable pdf format

Alan Ainslie April 2009 INDEX TO EDDYSTONE MODELS

issue page

31A 29 featured receiver JZ * 1 Q 11 manual L y 40A brief description J mains psu danger "25 narrow band filters, query as to 37 24

brief description ' z 160 services equivalent of ECR 21 9 214/215 brief description -24 9

3 g 25

358 advert, reprint (1942) 3 7

Australia, used in -29 29 condensers, paper 37 8 crystal, dud 39 20 dates when current 23 17 EB34 diode valves, replacement of with 1N914 diodes 42 20 electric shock 4 5 filters, crystal -42 20 Gulf War, monitoring of 8 1 mechanical problems 40 18 motorboating 7 5 Norway, in use, ex WW II trawler 8 16 r output valves 35 23 overhaul 10 17 10 22 H rescued from burial (Dave Langdon) 21 10 ! Royal Navy designation B34 42 10 S meter, sticking 12 14 m valves, ECC82 replacing EF39 25 15

I! vnrwkfVrkilc cons————————————————————————— _ ————— 14ih 7/ : _oi o ——————— —- - Z. 1 7 400 P brief description 18 10 ! 94. i o

9Q 11

-^ ——....— — ..—.——— ...... 31 22 I valves, ECC82 replacing EF39 -25 15 440 brief description 12 24

-if. 7

r issue page

450

504 featured receiver -21 3 acquisition by member 16 3 advert (N.Z.) 18 5 a.f. gain, fault 10 14 alignment frequencies 4 3 a.v.c.,fault 10 14 brief description 29 11 drifting, curing 40 5 rejuvenation of- 32 14 3 9 \ 4 S meter, zeroing problems 42 17 valves, ECC82 replacing EF39 -25 15 cccra n c ii ...... OH Q DjO/D p.S.U. ————————————————————————viu y 556 alignment frequencies 4 3 comparison with 504 15 1 640 •p£»oHirpH ppppiv/pi*...... /^ O

CtUVClaH\/<»rt I ————————————————...... -—-. ... - ...... jj/^ |^10

07 70

Arnold & Wright, N.Z. 37 26 a.f. gain, increase causing howl 19 2

Ugl<,ofTp llt/lnrtf vA/nrlfWUlIVIIlg in ct...... ——...... y (\ yO

alignment rrequencies --••--——————--———————q j audio output, distorted 17 6 audio output, lack of 6 9

...... —..—— —...... y y

...... —.—..——.—_.—.._.._..... 11 1 bandspread, not working 12 2 bfo,rustling noise at zero beat 10 9

...... — ...... —*Z7OO ITI / components, needing changing in most sets 10 13 crystal phasing, reversed to eliminate QRM 31 2 drifting 34 21 electrolytic condensers 3 2

1A n """"""*'""*JIT O faults, common 6 9 typical 33 19 frequency jumping 34 29 fuse, ht, fitting of -36 27 handles, chrome 34 20 hum 3 2

i.f. breakthrough -27 14

/ in use (Peter Stein) 27 16 loudspeaker, fitting of 33 23 mixer valve 34 26 modifications, factory (early models) 31 8 motorboating 10 14

.25 16 issue page

640 cont'd noise limiter, non - operational 6 9 14 6 25 , . 5 5 overheating 8 2 12 14 pre-production models on trial 17 3 product detector, fitting of -29 19 QRP transmitter within 11 3 -~4 21 11 17 prices, new 11 l' rectifier, OZ40, use of -28 17 resistor upgrading -25 7

restoration from scrap (James Scott) 18 19 rf gain pot., use of correct type 36 . 2 RSGB show article 16 2

tuning dial, slippage -24 1 upgrading very early models 10 24 usage & repairs 18 7 valves, ECC82 replacing EF39 -25 15 valves, metal, shock warning 31 17 valves, minature, fitted -30 18 1948 station re-creation, use in -27 9 659 advert, factory 9 22 42 27 alignment frequencies 4 3

magic eye 16 1 not working 32 14

repair and cleaning 12 9 repair 20 10 resistor fault 14 11 switch, on/off, faulty 14 12 valve cap wiring 17 5 valves, ECC82 replacing EF39 -25 15 659/670 model, querying existence of -21 17 670 featured receiver 4 8 alignment frequencies 4 3 battery powered 41 25 W-fn -fit+incr ...... a...... -...—...... 1 *7 10 U1U, tilling ————————————— - - ——— i / iXi

brief notes (Bert Swanley) 15 14

/"Ito I MtfYl'lf' TO1llll*O I*Of^^CI^^/j — — ___.....______■•______■.______—._..__ yO 1 Q Ul&I llglll idUUI V) 1 WjJw&Lwll ——••——••—————«•—•••• ••— «•«.—»«__ — -.——__«._...,^^ io r distortion, reduction of 29 13 drifting 16 5 dropper resistor corrosion 33 20 faults, common 17 6 frequency coverage, gap in 16 3

HIIMA —— -.« — __-•___—__ — ■. — — -■—, — -■• — — •. — —— —» — ——— — •««•• — MMMWMM ««M«M»M«»«»*MWVWW__. I X 1 /L

I issue page

670 cont'd long wave coils fitted (Ken Quigg) 32 15 modifications, found on set -21 18 overhaul 10 21 rectifier, substitute 21 8 Seafarers Receiver -28 28 tuning, backlash 18 17 valves, substitutes 7 1 .22 18 670/1 MIMCO2232B 5 2 670/A MIMCO 2245A 9 7 670A featured receiver -33 5 avc, not working 9 12 dial lights, fitting of -22 5 lack of -23 20 early model acquired by member (Bill) 42 26

faults, common 6 9

ferritecore, loose -27 22 Gulf War, monitoring of 32 17 hum 4 4 mains voltage, using down to 80 volts -23 11 modifications 20 5 SW Magazine, described in 34 11 overheating 8 2 rebuilding 9 9 23 9 after transistor 'conversion' 15 11

sensitivity, low 6 3 selectivity, poor 5 3 thermistor 6 9 valve sockets, dirty 33 20 670C featured receiver -27 5 aerial input ohms 34 2 AC only conversion -27 7 follow - up comments 35 17 36 35 bfo, fitting of 27 7 faults, common 17 6 hum, curing 19 6 knobs, size of 16 15 originality, member's set 34 10 rf gain noisy 13 12 tape recorder output -26 18 680 featured receiver -29 3 advert for 14 18

alignment frequencies 4 3 bass, lack of 33 20 bfo, fault 33 8 'customised' version -24 18 differences between early and later models -25 12 .29 27

drift 12 14 issue page

680 cont'd history of one since new (Ellis Taylor) 14 18 New Zealand models 12 22

r variable bandwidth system -34 14 680X

1Q bfo, improving -28 19 crystal calibrator, fitting within -28 8

11 New Zealand, used for monitoring & later restored -37 23 noise limiter, fault 9 10 non - operational (faulty resistor) -22 6 SmAfpr fault—— —————————._-— —

switches, toggle -29 9 (mains) 40 2 transformer, mains, burnout 24 16 variable bandwidth system 34 14 700 brief description -24 9 blueprint found ('Queens' model') 38 12 710 alignment frequencies 4 3 710B r see All World Six 720 audio response curve 39 15

1 brief description 34 26 discovered at factory .3 9 19 parts list obtained 39 1 Yachtsman variant .21 17 730 m featured receiver (730/4) 17 g I advert, reprint 4 11 1 crystal switch 17 3 faultfinding 40 28 m mains switch, failure & replacement 42 15 most prolific model 17 1 g noise limiter, incorrectly wired whennew 30 24 m Radio Bygones, featured in .28 1 Short Wave Magazine, featured in -28 7 switches, replacing 42 15 m variable bandwidth system 34 14 variants of mode Is 17 2 2 730/1, revalving 10 1 g 730/4 calibrator, weak 8 19 m calibrator fault 22 18 faults, resistors 2 6 ht on/off switch 14 1 g ^ hum g 19 modifications, reversible 35 12 issue page

730 cont'd 730/4 oscillating at af stage 41 19 product detector (add-on) 18 18 _ 19 12

.29 19 rf amplifier mod 3 5 17 730/5 brief description 18 12 730/6, digital readout conversion 14 9 740 featured receiver 3 5 a.f. coupling fault -23 17 alignment frequencies 4 3 auxiliary supply plug 10 14 crystal calibrator, fitting of -27 10 Elbe barge, used in -21 13 emission, loss of 12 18 faults, common 6 10 H.T., lack of- 7 5 motorboating -26 2 octal plug on rear 12 13 .2 g 20 output, lack of- 32 14 overhaul 7 4 8 7

j 5 9 Q Fiver, use with -27 3

repairs & mods 33 17 transformer, mains, protection of -29 13 valves, blown 35 11 750 featured receiver 12 19 alignment frequencies 4 3 Buenos Aires owner 21 13 bfo, noisy 8 14 lack of 10 15 case renovation 9 11 circuit diagram incorrect 31 13 current feedback -26 14 date of launch 16 15 earth connection problem -22 18 faults, common 6 10 gain, low 12 14 hum, curing -42 21 instability, full volume 7 6 Marconi HR100, equivalent of 750/2 19 18 microphonic 12 14 output stage, description -28 29 overhaul 8 17 overheating 8 3 product detector, fitting of -29 19

rAQlirrntnont ______.__....__..__.._____««_««_«»•»«_«■•««_—«»mmmw* 1 5% Q Callglllllwlll"- ~~ A <* ^ Super model, query as to existence of 16 13

17 12

on 1

tape recording outlet -22 17 transformer, mains 8 2 tuning ratio 12 1 issue page

750 cont'd valve substitution, 6AQ5 to replace N78 -26 14 34 28 voltage stabiliser 10 16 750A, de luxe model, overhaul of 8 11 770M brief description -20 3 .24 9

770R featured receiver 9 19 advert, reprint 2 4 aerials ————————————————————7 ^ 5 JO " 8

Dressier active antenna 26 19 China & Brazil, supplied to 42 30 drive cord 6 9

foil itf* /"♦rtM'lTYl /^M __ _ — ______MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMn I II iauiis, cumniun ———————— — -u iu

I.m.,f m faultIallll ——————————————————- — - ———^,uOf\ *+&

/YMfM 1/^11/ ______MM«M_M_MMMMMMMM______. I A. I / gain, low ————•——-——-—-———---——---- - ~ -«—«^«f i£

. ...j ^ 13 MoD designation see also R213 below 22

NASA, used by 1 8 4 r 7 31 plug, correct type 21 R213 MoD designation 22

radio astronomy, used for (Jack Read) 33 14 S meter, fault -22 7 16 18

signals, reception of- 14 l o r solar noise, recording of 9 4 tuning indicator, faulty -22 2 turret tuner, reason for 14 10 valves replacement (V1,2 & 3) -24 16 r versions 4 4 770R/9,used by Diplomatic Wireless Service 4 4 770S brief description 4 4

11 8 4 Air Ministry numbering 5 1 designer's comments 24 9 p output, lack of- -24 8 I signals, lack of 27 1 turret tuners .33 10 r valves, cost of- 30 17

30 24 issue page

770U ' advert, reprint 2 4

drive cord replacement & plan -37 3 faults, common 6 10

panadaptor, use with -28 20 i range lamps, intermittent 12 13 sensitivity, low 7 6 turret tuners 33 10 3 g 14 I valves, correct type -24 8 variations 33 22 ***\ 793 ! projection model -26 29 800 ^ television model -26 29 I 810 information required by Ted Moore -26 30 820 "* featured receiver -20 3 acquisition and case 14 9 case 16 3 ^ co-ax sockets -29 13 documentation, original 34 17 gain, low (faulty resistor) -22 7 .22 20 in use -28 16 reliability -27 14 stereo version query -21 2 ^ V5, low operating voltage 28 30 830 Addis Abbaba, used in -21 14 ^ advert, factory (830/7) -22 4 bfo, drifting -26 18 Canadian variants -26 23 crystal filter, fitting 9 24 m crystals 17 9 diodes, replacement for DD006 34 17 faults, common 6 10 m modifications, by member 42 16 noise limiter fault (6AL5) 42 25 not working (condenser fault) 22 2 Piccolo, reception of- -23 15 m Piccolo, filter removed 9 24

37 2

selectivity switch not connected, Piccolo sets 6 5 *■> .29 14

triple diversity racks 32 12 valves, substitutes 7 1 830/2, replacement condensers (Arthur Collins) 19 2 830/5, imported from Sweden 9 3 830/7, superiority 7 11 830/8, Diplomatic Wireless Service 1 3 m 830/11, STC model 5 2 830/5, STC model 5 2 830/6, use with mechanical morse printer 13 5 m 830/8, AMTOR & RTTY reception 11 13 issue page

830 cont'd 830/9, local oscillator switch 33 29 830/12, frequency coverage 19 11 840 featuredreceiver -26 9 advert, Webb's Radio -42 4 bfo, modification 15 13 dropper resistor, corrosion -27 29 faults, common 17 6 gain, low hum, curing 14 11

local oscillator, fault -26 17 range switch 15 13 ssb, resolving 15 13 transformer, 1 lOv 15 13 waveband markings 15 13 840A featured receiver 1 7 AC only, modification -25 14 aerial link, A2 to E 7 1 af gain, not fully operational 3 6 35 audio, distortion 7 5 avc, improvement 10 18 dial light 4 4 disabled listener, donated to (by Phil Johnstone) -28 10 Dr. No, used in film 33 26 drive cord restringing -25 17 dropper resistor 12 13 .26 12 faults, common 6 10 17 g faults, various -22 15 23 21 gain, low, curing of -20 15 2 9 \ 7 headphones usage, fault develops 10 15 j 4 ] ] ht increase, mod 3 3 10 hum 10 16 instability, strong signals -27 25 noise limiter diodes 34 21 overheating 8 2 range switch 12 8 refurbishment 10 12

O C 1 Q

^O i i

repairs ———————————————————————————j j R.F. & oscillator re-alignment 2 2 shipboard use 33 21 superiority over Sangean -29 1 used overseas (Christopher Wood) 39 32 transformer, isolation, fitting of- 32 6 valve failure 15 2 UY41 bypass 35 20 r issue page

840C featured receiver 7 8 advert, reprint 4 11 7 15 aerial, importance of correct impedance 41 5 bfo, rustling noise at zero beat 10 9 .29 n

faults, common 17 6 fault, intermittent -29 9 frequency shifting -28 20 if regeneration mod. 32 31 magic eye, fault 12 13 .26 20 motorboating 32 21 oscillating -42 31 resistors, explanation of 11 9 r.f. / i.f gain, combined control 11 5 sensitivity, low 4 5 spurious signals 35 2 840 II, prototype 10 15 850 featured receiver 39 3 broadcast breakthrough 33 9 earthquake prediction -21 2 electrolytic failure -26 4 elf & vlf signals, used for 32 19 NDB reception, used for -21 16 850/4, manual, errors in 37 8 870 featured receiver -24 3

choke, burnt out -22 5 condenser fault 14 II i.f. rejection circuit 16 15 mobile use(Austin A40) -23 20 modifications, factory, late models 40 26 overheating (rectifier) 8 3 overhaul———————————————————————————^z 13

.24 7

(Dick King) 41 9 restoration after transistor conversion -23 11 Sirrnoic larlf r\f . —————— ...... 14 19 Is£llalo, 1 alt ft. ui ————-- ... ^^ ^^ transistor conversion, inferiority of -25 14 valves, types used -25 18 870A

-foofiir^HiCdlUl CU rpppivpr...... «^/^IVVWlVCl —— — — — — — — - mmmjyj 9^£ j

oiirlio HicfrnrtpH . . .—.—.———.—...... *? *J 1*5 uliUlU, UlolUI ICU "-————————— — - "'JJ 1 J brief description 3 0 7 checking & overhaul 7 7 electrolytic failure 42 10 intermittent fault, dry joint 13 4 in use (Alan) 40 17 modifications to improve (Andy) 41 3 output transformer, substitute -21 8 issue page

870A cont'd purchase by member Billie Coleman 16 17 Stan 39 10 realigning aerial tuning stage 12 13 restoration after bodging -29 9 ._...._____..—..>——••>—«—41 27 selectivity increase mod. 31 22 ssb reception mod 32 7 transatlantic broadcast reception -34 11 WVS, obtained from *28 10 880 bands, loss of- -27 28 calibrator, query as to fault 38 21 gain, low 4 6

output low, ssb/cw -42 29 signal jumping 12 8 880/3, Marconi H2301/01 9 24 888 age, ineffective 5 10 calibrator, repair 33 14 difference between 888A 4 4 8 9 r Dr No, used in (not ?) 32 4

4 j 12 in use worldwide -27 1 mains switch, fault 34 4 overhaul -22 13

tracking, incorrect -27 25 888A featured receiver 23 2 aerial trimmer -21 8 bandspreading 16 16 calibrator, trimming -23 8 condenser, fault 14 12 difference between 888 4 4 . c o faults, common 6 11 ' output, lack of- 14 11

.29 14

r foil If1 •_• ••• •> .«...««..».■••••■«•■•■•••«•••«••—•••■»■• 1 d 1 1 i, iduii ———— *" ii restoration of set -23 5 spurious signals 11 9 ssb reception -22 16 voltage stabiliser 8 4 890 briefdescription 10 15

"i i 99 ~————————————————— —• j i ££

Ul —————————————————— - — - J J £ I 909A featured receiver 31 17 brief description -20 12 r diode replacement 42 2 issue page

909Acont'd J? I

psu ——————— ——— —— —-

910 featured receiver J' ° \ equivalent of Marconi HR101 -26 13 912 brief description 1° l5 m 930

usage of, new " 1' ' m 935 prototype for 940 10 15 940 featured receiver 2 7 ** advert, factory 32 26 .34 24 a.f. gain pot., failure -24 2 m audio crackling -25 14 audio gain increase mod. 31 9 audio output distorted 13 6 .2 9 10 m

.24 2

avc, poor "24 2 bfo, 'popping1 19 5 bulbs 4 2 cathode volts, low 10 14 ceramic filters, fitting of (not!) 33 4 condenser, overheating 8 19 crystal calibrator, modifying for 7 2 7 13

.24 17

.26 1

j f 32 22

dial light, modification -24 2 electrolytic failure 18 10 faults, common 6 11

Latino, UllC IHClUUw 5 ——————————-•—- / j fuses, terminals corroded 41 13

gain, laCK. Ol ——————————————— — - — - —j\j j

niU-f suiiixenffiv mr\r\e*\muuci-—————————————— — . ———. — ———.^^ .OQ 1^ 1 i

X) 5 ...... J £m J

micropnony—-—————————————————-————----•■•--————— 1 o o

output, lack of- 15 2 output transformer, substitute -21 8 resistors

.no in restoration of 14 15

oCllallIVIljr9 IdUN yi——————•--•——••—•—••"——• •- —•• 9l § \j servicing (Graham Leese) 12 25

12 16

silverfish found inside new purchase 41 4

...... ———...... R o Qy

JO 1O ...... ^ ^ ^ ^ issue page

940 cont'd transformer, winding 12 14 tuning ratio 12 1 tuning mechanism -26 2 958 featured receiver 14 6 advert, factory 15 18 comparison of different versions 8 13 coupling co-ax corrosion -26 11 • .27 2

3 7 \\

...... J Q J^

IaUllofoiiitc ——————...... 3R —— - jo 0y intermittent function 3 3 19 Isle of Wight museum -26 19 MoD reference numbers -20 12

/\i/At*nQiil ______■■ - - »»■ I / 1 ^ ovcrnaui—————————————— - - -•—— i^ u

i* i ...... jj j

prices --»---••------———————"————""—••—————-——^tf | /

servicing ------———————— — ———»i / u

Lulling Uloj/lCljr, i^iuii,------———————————————....-....—— x^, |j

qcq/lj (-TcMTAfiiilf mnHpl...... ^ 0 7jo/n, nagcuuiv muuci —...—j ^

...... S 9 p 958/5, Nebula, manual 19 11 I 960 1 featured receiver 16 10 battery operation, nicads, problems with 38 9 brief description 18 12

bfo, noisy / unstable 10 16

comparison with 940 9 7

...... O£ no

ulllllllg———Hriftino ...... "• — - — ———————————————~.j ^^ ^ qC

\,i, rcjecior tuning ""•••""""""•••••"""""»"•—"-—"""»«———»—»—■—»••«••»•——»—.——.—»i\j 1q solar powered 8 6 transistor change, retrimming 9 11 transistor blown, r.f. 10 16 variations on later sets 32 22 961 Mkl & II information sought 3 9 19 990R advert, factory -36 31 aerials, suggested types -20 8 brief description 9 8

36 31 crystal units 37 9 drifting 42 23 faults, common 17 5 frequency deviation, figures sought 36 14 i.f convertor circuit 40 14 using with 990R 42 7 non working 12 4 prices, secondhand -27 23 990S featured Receiver 8 7 advert, factory 20 13

2 $ 22 r faults, common 17 5 issue page

1000 featured receiver -25 6 1002 brief description 41 1 1004

MIMCO Sentinel 5 2

IT.1.1. T* JC ——--—— ———————————...... _...... _...... 2 ^, HagenukE92 5 2 1650 pcb 20 3

1570 featured receiver 35 7

1590 board ref. nos. 19 5 1837 availability secondhand 33 21 Marconi Pacific -26 1 press release, September 1977 16 14 1964 ex trawlers, purchased by member 42 18 1990 1990R used with panadaptor, HMS Euralyus -24 10 1995 brief description 12 8 2004 brief description 24 18 6200 brief description 41 32 AH Wave Four advert, factory 38 11 All World Two featured receiver -28 25 advert for 36 24 refurbishment 26 25 review, Wireless World 1936 39 25 AH World Four brief mention -25 4 AH World Six featured receiver 19 15 advert, factory, and specification 19 9

Africa, use in————————— ——————————./^i. y brief description 3 5 i o l s

repairs •■•"•••""••"""■■■■•""•■•"■•••"••••■••"••••••"•••""•"•""""■""""""""■"""••jj i j wind generator, powered by 9 2 H1 C\IXX A ...... A I i\JlO t ——-— - -t AH World Eight featured receiver 13 16 advert, factory 3 4 12 brief description 12 2 12 24 differences between early and late models -24 4 R101 version used by RN 36 14 Atlantic Two brief description 33 26 m issue page

Atlantic Three existence of- 38 25 m Colonial query as to existence of 36 4 EA12 advert, factory 32 26 w chirpy cw reception "29 13 . i 7 19 gain, low ' L * on certain bands 33 20 QRP transmitter within 13 5 overhaul & recification of apparent factory faults -21 12 peak rf control, faulty 14 12 power supply section, failure in 42 14 m purchased new from G5GX -27 9 realignment -26 19 RSGB HQ, on display -22 11 -29 22 S meter scale 25 13 incorrect readings 42 31 transistor front end considered -25 13 using properly -27 4 variable bandwidth system 34 14 EB35 featured receiver 11 11 aerial effect of very long wire 34 21 vhf- 37 31 39 19 r air band signals, reception of- 33 1 audio output lack of 14 11 22 19 distorted -29 14 36 35

battery case 9 5 2 7 \ 3 corrosion -20 6 operation 35 21 bfo, fitting of 12 10 1 g 20 comparison with EB37 30 21 controllable i.f. modification 18 16 diode Dl 41 28 drifting 7 14 Eddystone Lighthouse, presented to 11 16 faults, common 6 10 headphone socket 42 7 identifying features, all models 40 31 light switch, modification 13 6 Ig 20 loudspeakers 17 6 mains psu Aincror — - .—.....9^ 7 UoIlgCl ———————————————— 6J / description 37 13 Mk III, differences 8 6 mobile psu 14 14 NATO release of sets 41 25 r noise limiter, fitting 16 19 r issue page 1

EB35 cont'd J non - working -21 16 pcb no. 75328/W -33 31 phone socket -42 7 I psu diodes, replacement -34 29 I selectivity, improving -22 9 signal, lack of (AM) -27 3 | stereo version *21 2 transistors, whiskers on 8 11 37 2 swapping for silicon types (not!) 34 10 used overseas *21 13 EB35 Mkll ** differences between Mk I 16 19

Joint Services/NATO stock number 13 13 m NATO release of sets 41 25 psu diodes, replacement 34 29 realignment & overhaul -29 19 stolen (Ted Moore's rx), serial no. 3176 40 25 "" EB35 Mklll (Statesman) featured receiver 34 31 model variants 35 8 m rf gain, fitting of 42 22 EB35A brief description 7 14 ^ EB36 advert, factory 9 16 acquisition & refurbishment, by member 42 17 aerial, ferrite for use with -27 19 m identifying features 40 31

Reuters, owned by 3 8 10 m EB37 advert, factory 15 18 aerial, remote ferrite for use with 34 11 bfo, fitting 27 15 m brief description 18 12 ceramic filters, effect of 19 2 comparison with EB3 5 3 0 21 m harmonics caused by faulty diodes 26 12 identifying features

micropnony—————————————— ———————— [q 5

motorboating——————————— —————14 \L output, distorted 14 12 output, lack of- 18 8 psu diodes, replacement 34 29 « realignment, considering -29 21

transistors, bewhiskered -23 14 m EC10 featuredreceiver 10 3 advert, factory 10 0 . .. 79 9fi m — ——.——.—»"«• —™——- — ——-• — — — — ..— — — — ———— — Jim im\J

battery corrosion -20 6 battery substitution -23 19 issue page

EC10 cont'd

' 3 9 17

42 22 ceramic filters 19 2 comparison with other receivers 16 6 crystal calibrator, fitting 14 13 diode DI, failure -28 29 41 28 diode and transistor failure (lightning) -23 13 j •/!•_, ...■..-...—.—————————.19 13 dritting x^ 1J 33 19 faults, common 6 10 filter problems -29 12 filter, modifying for cw reception 29 13 Ford Zephyr Mk I, fitted to 8 7 Gulf war, monitoring 9 1

identifying features (all models) 40 31 model variations (Tor Marthinsen) 18 17 loudspeakers 17 6 mains psu danger -25 7 description 3 7 13 output, intermittent -20 16 overseas use *21 13 power supply faults 33 18 240v output, caution 42 2 Practical Wireless, owned by staff 31 11 purchased new (Roy Elwen) 3 8 31 QRM, reducing 9 7 r.f. protection 10 11 restoration 27 17 .2 8 13 scale cursor mis-placed 42 29 selectivity, improving 37 17 servicing 16 6 r Short Wave Magazine, featured in -28 7 solar power 6 3 spurious signals 36 3 r ssb reception 3 8 31 switches, push button 40 2 transistors incorrect type fitted -27 11 whiskers on 8 11 substituting with silicon types (not!) -26 28

transmitter incorporated -26 22 ZOO-2530 models, query as to 37 1 EClOMkll bfo, not working 12 13 dial lamps, substituting for LEDs 26 8 drifting 34 16 49 i -2

OOOy"""""""""""""""""""""""""""'""""""""*""""*"""""*""'""""""""""*"J 2. purchased new from Imhofs 37 24 tuning, fine, fault 17 5 r issue page j

EC10 Mk III 1 brief description 7 11 EC10A/2 brief description 8 12 owned by SWM 30 14 mobile use, Sunbeam Rapier 30 22 ECR featuredreceiver -22 3 advert, factory 2 1 'l A 97

3 7 21

40 30

dates of manufacture 37 29 manual, being compiled -34 8

IuOUUllIlg LI1UK.C ——————— — - ——& x o 160 Services equivalent -21 9 Edometer

— - .49 EK20

Ul ICl UCdUl ipllUll ™ ————————————i i

ljrpc —— —------——---——-—------_.—«— j ^

5ic trt-._..—.-.———_.•-——._-•--_-_—-_.___.••__ _ __ 1*7

Empire Two good receiving ability 40 29 EM34 acquired by member 30 5 magic eye weak, curing 42 11 E.R.A. featured receiver 30 3 advert, factory 31 27

comparison with ERA7 32 5 Everyman Short Waver featured receiver 40 7 brief description 39 21 EY11 brief description -24 9

—————————— — ...... —.——..—.—.._...... jy1(\ 1in y

40 n discovered at factory 41 27 further information (prototype) 42 9 Homelander retrieved from loft 11 2 Kilodyne '4' featured receiver 18 2 block schematic 18 1 found partly built (David Lewis) -28 7 information available (circuits etc.) 37 12 Vis, used by in WWII 42 24 L.P.C. advert, factory 34 27

Orion brief description 25 1

7000, brief description 34 q issue page

R.74 query whether Eddystone 18 17 R.101 see All World Eight R213 see 770 Scientific Two featured receiver 41 10 blueprint available 3 8 29 Scientific Three brief description 30 19 Scientific Four advert for 41 14 broadcast stations, list of included in handbook (1927) 36 9 construction manual 35 23 Short Wave Two monitoring, used for in WWII 40 33 replica, intention to construct -27 16

Sphinx featured receiver 15 5 advert, factory 15 0 brief notes 15 1

owned by members 17 18 12 8

Statesman seeEB35MkIII Twin brief description -25 21 replica, intention to reconstruct 34 2 42 30 owned by Graeme Wormald 30 1 obtained by Graeme Wormald 39 11 Ultra Short Wave Radio Telephone fartttiraA cot ...... _—...... ^K 1 ^ ieaiurcQ bei ——————————————————— jo 1 j constructional article, advert for 38 13 Yachtsman see also EY1I 720 variant -21 17

r r r GENERAL INDEX

issue page

AC / DC models operating on 120v 7 6

. P -27 2 heating or ——— ——— hum reducing, modification • —-18 20 isolation transformers 34 28 isolation washers (front panel) 34 2 Acceptor Unit Dl 1/R234 36 3 Advertisements, factory see also model index and Dealers, Eddystone see also model index & specific items in general index aerial 34 25 coils 8 10a components & factory 12 27 components -25 20 components (1934) 32 24 components (1939) -33 12 34 3 components (1932) 39 5 dials & drives 37 7 diecast boxes 14 5 racks, steel, transmitting -35 22 receivers (1968) 32 26 short wave components 37 19 3 7 25

40 6

40 13 Aerials active antenna 9 2 12 3

26 19 attenuator 15 15 LP3382 37 31 38 30 attenuator pads & formula -28 23 made outside Eddystone 39 33 tunable, description 30 25 obtaining FET for above 32 13 valve type 32 17 attenuator 12 3 balun, magnetic -24 15 beam, 2 metre, Eddystone 11 14 Beverage -21 15 broadband, for SWLing 36 10 choosing type -25 3 35 25

37 28

39 i

co - ax see Co - ax comparison of different types, receiving 9 2 10 1

^ f 9 11 dipole, folded -29 2 34 26 issue page

r Aerials cont'd dipoles,v.h.f. 10 8 dipoles, wide band 10 4 & 6

discones, Eddystone 3 9 21

Eddystone types 3 9 13 Eddystone components, advert see Advertisements Eddystone Safety Lead - in -34 19 ferrite -27 19 remote, for EB37 etc. 34 11 flat, for use in -29 22 frame 32 8 h.f. / shortwave -28 14 ideal system -27 26 impedances for different models 30 9 30 23 Johnson Q -3 5 2 i r .39 22 long wire,for 50 Mc/s -28 17 r loop 2 metres 10 7 indoor *27 16 r 5 turn insulated -27 25 Marconi 7 2 NDB receiving 17 9 open wire feeder v co-ax 3 8 1 overhaul of aerial -41 8 quarter wave v 5/8th 36 3 short wave (Eddystone Short Wave Manual) 38 3 Sinott, Colin, system used by 11 7 Sterba arrays 17 10 television band I aerial, used for 50 mc/s -28 24 r thickness of wire -27 10 vertical wire -27 21 v.h.f. & u.h.f.———————— ——————— —— —2 3 7 g

11 s

I g j 4

.20 g

. .96 9

long wires 39 30 wire netting 27 10

60OX, use witn————————————————«jj [q Aerial Tuning Unit building for under a fiver 39 23 r circuit (used by Steve Tibbitt) 11 8 combined a.t.u. & attenuator 18 11 components needed in construction 30 14 r description & construction (W.E. Moore) 1 6 description & construction (Robert Pye) 10 10 feedback on above 4 5

L>al\.C1 olr*» A1UATT1 —————————————- — - — - — ...... - ^,790 1 loop type (Stewart Dodd) 15 14

94 17 ...... £^~y I 1 r issue page

AF coupling, mod. to remove DC from gain pot 18 20 AF gain, increase causing howl 19 2 AF output take - off points '24 11 32 4 AFN, cessation of service -27 *2 v.h.f. reception 30 23 AGC, not working 4 3 9 11

Ainslie, Alan archives 31 1 archives, working on -29 0 request for history -29 30 Air band air traffic control 2 10 receiving on EB35 33 1 S.f7-—----""-"""» 2 10 Air Ministry numbering, S770 5 11 Air - Sea rescue frequencies 9 11 12 4 31 16 Alignment 13 13 checking signal generator to crystal calibrator 7 14 frequency table 4 3 warm-up time 26 12 without signal generator -28 21 Amateur bands, original allocations 27 24 Amateur radio, restarting after WWII 36 28 American receivers, pre - war 15 1 American broadcast stations 15 14 AMTOR reception 11 13 Antennae - see aerials AR88, comparison with Eddystones -42 12 Archives see under Eddystone, also Ainslie, Alan ARRL handbook 10 23 AS WE, definition 8 5 Atlantic City Conference 15 13 Attenuators, for test purposes (Paul Burnett) 15 11 Attenuator for active aerial 15 15 Audio output

distortion———————————— ———————————j j,

14 \\ meter 13 6 16 15 power required 19 7 Australian time frequency transmitter 8 10 AVC, correct setting of RF gain 8 4 Band pass filter 16 1 Bandspread, not working 12 25 Bathtub see Factory, Eddystone Bath Tub Curve 37 9 Battery boxes, catalogue numbers & descriptions 37 13 Battery eliminators (Eddystone Short Wave Manual) 38 7 Battery operation transistor models -23 19 valve models 41 25 Batteries, nicad, use of with transistor sets 35 5 issue page

BC453 see Q Fiver Beacons r unidentified 12 25

r bfo ! fitting to EB35 12 10

r fitting 17 12 .2 5 16 improving on 1950s models 30 6 not working 4 3

! too coarse 6 5 Bias, valve 34 5 r Bletchley Park 11 2 m . 32 4 ! 3 g 28 Bolam,Sid 38 28 H Books, servicing, valve radios 15 24 • British Arctic Air Route Expedition, using Eddystones 38 1

r Broadcast stations

frequency switching for optimum propogation (sw) 31 15 r long wave, high power 39 15 medium wave ———————————————————————o o

i* 14 short wave (1932) 3 8 5 signal processing giving poor qual ity 31 15 22 11 r Browns Nautical Almanac 42 19 ! Brussels Weather -25 22 Bulbs wrong type fitted 4 2 P obtaining, cycle shop -27 13 I short wave, list of (historical) 37 16

use or Lrt/LJs~~~...——...—.——...... —.—.—.•—...... ^q q

33 28 r Bulgin catalogue 12 2 Camper & Nicholson 7020 Rx 19 5 26 7 P Capacitors see condensers Cape Canaveral 2 4

Carbon tetrachloride, dangers of 36 14 Car boot sales, purchase of Eddystones at 37 2 Cartoons Radio of the Month Club 14 2

^2 3 7 Girl on Island (Jim Murphy) -28 2

P" Heath Robinson, aerials 34 18 Army, WW II 36 28 'Mbonga'Mbonga 41 3 5

rf^oe**L^ase renovaiion,ronr*\/otinn *7^H/ j\j ————————— ——————————y...... 0 1ii 1

r issue page

Caversham Park 36 33 3 g 2 Centenary of Radio 31 11 CEPT, definition 8 5 CHiDE, information about -40 34 Cirkit catalogue 12 2 Cleaner, switch see switches, cleaner Cleaning of receivers 39 8 Clear Air Turbulence 13 9 Cleopatra, connection with Eddystone 39 32 Co-ax co-ax v open wire 38 1 miniature type -40 13 use of correct type -32 6 use of in aerials -3 5 2 Coil formers (not Eddystone), supplier -26 24

Component failure, Bath Tub Curve 37 9 Condensers correct types to use 10 14 j 7 15 coupling, use of polyester or mica types 9 11 electrolytic replacement 3 2 coloured dots 12 14 disposal of 35 19 dried out 8 14 exploding 4 3 lg 4 failure (940) 18 10 old 35 19 reforming -24 2 26 13 use of old can 9 11 white deposits 4 3 failure after short time -21 17 humidity, affected by 32 10 K.V.S.make 18 15 i-_i_, ———————7 1 ^ leaicy ———— —————— — / u

X) ?n

offante r\f ...... - ...... —.——.17 O CLlCHo UL —————————— i / ? m 1 Q 17 a...... —.—...... iy 1/ paper, leaky 37 10 paper, replaced by polycons 19 2 paper, replacing with modern types -23 12 replacement, general -28 16 a -i o ...... JJ im silver mica leakage & wax coating -29 12 problems with -28 3 replacing with ceramic 9 23 TCC type 10 9 test instrument, to make (Graeme Wormald) 34 6 tubular paper 14 3 tuning lubrication of 17 11 white deposits 5 4 ti/Viiclrorc ...... Q O'X WniotvCI o —————————————————— — — -j £ j Connectors, mains 4 2 issue page

Consol stations 33 15 31 29 Colour codes resistors 4 3 wiring, Eddystones 4 3 Cook, Charles 36 1 Cooke,Bill -26 2 0 13 Cores, dust 5 2 Crystals, fitting to receivers 17 9 Crystal calibrator 19 \ ceramic resonator used 25 14 Heathkit adapation 26 21 switches (push type) -25 18 to build in 9 15 13 7 3 6 info on above -33 32

Cunard Liners, using Eddystone 'Queens' model -24 9 CW reception, improving -29 18 D Day landings 11 21 Eddystone equipment used 41 7 Daventry, closure of 2 2 36 30 Dealers, Eddystone new (historical) Arnold & Wright Ltd. (N.Z.) 37 26 Australia & NZ -29 17 Dayzite Ltd 17 2 factory appointed 1 4 3 4 r Home Radio 9 26 I j 4 g H.P. Radio 8 10a - Imhofs 37 24 I j 5 4 Odeon Radio 6 10 Radio Supply Co (N.Z.) 18 5 Stratton & Co see Stratton & Co r Swanco Products 16 4 Webbs Radio see Webbs Radio r Willings, Alf & Co 42 19 ; Woodsons of Aberdeen 42 30 used (present day) 7 2

nJil ———————————————————— — o j r 12 3 ; 8 10

An/»hr»r Qiimlnc — — ...—-...... —-——---——--——19 *X /AllvIlUl OUlJJIUo ——————————————— ia J

14 \a

I RirlfPttQ 1 1 1 Centre Electronics 9 5

11 "i

12 3

r issue page

Dealers cont'd used (present day) Electromart GWM Radio Halcyon Electronics

Dealers, spares see Spares

Detectors, use of steel slag Dial cord see Drive cord Dial lamps see Bulbs Dial glass

cleaning —————

removal & cleaning ————————————————o^ j f*pn pvX/$l 1 ——————————————————————————————————————4 1 ^ 0

MiArrA ivOf/^io Tclonn ___..______■>.__«_>•«■.>»__■■.__.«_*>____._■•_._.__«._..____..___..___ —— # 1 1 JL/lCgU vJOl Cld ldlaliu —— — —— ...... i i |

Eddystone transmitters 41 0 Digital readout conversion 14 9 ...... — ...... —...... 23 19

-37 on

Diodes germanium, equivalents sought 38 26 OA90 equivalent for GEX types 39 30 OA90 equivalent for OA70 41 28 other equivalents for eartly types (Tor Marthinsen) 40 22

40 25 replacement in psu of EB & EC models 34 29 substituting as rectifiers 11 8

Diplomatic Wireless Service (DWS) 1 3

8C j ———————————...... _.—.—.._._...... _.... 19 17 770R/9 4 4 Direction finding -20 7 Distortion, audio 5 2 Diversityreception 30 29 DrNo 888 featured (not!) 32 4 840A featured 33 26 Drift, mechanical 28 15

...... 70 *^o — ...... —.^ ^g Drive mechanism, lubrication 32 4 Drive, 898, advert 8 18 Drive cord alternative types -25 3

j 3 bronze wire (N .Z.) 17 15 fishing line 4 2 nylon -27 4 replacement -25 17 replacement .26 6

35 4 issue page

Drive cord cont'd 1 replacement — -37 RS components - —5 6 steel wire -8 13 -9 23

Dx reception -15 17 38 Earhart, Amelia- 8 Earthing — -9 8 -11 2 ■18 13 .28 14 .22 18 34 33 low resistance connections — 39 15 .35 mains 2 causing QRM .34 33 PME system .25 1 r Earthquake prediction .2 \ 2 Eddystone accessories -36 19 r activities, factory, current— -30 0 DAB -40 24 a.f. filters -16 8 agents, Australia & New Zealand -29 17 r archives see also Ainslie, Alan-— .29 0 31 1 badge, lighthouse, query as to significance of colour — 39 29 battery boxes see Battery boxes blueprints, pre-war models —27 1 brochures, donated to EUG by factory -36 4 bug key -15 16 cases, different types -12 23 cartoon (girl on desert isle, Jim Murphy) 28 2 catalogue, components (sought by EUG) 3 5 23 catalogue ■"——————————————— 11 19 cleaning of receivers- 3 9 8 coils, plug in, advert for 11 18 collecting 28 6 component suppliers 39 21 convenors, 939 & 959 -27 11 Cooke, Bill (employee) 26 2 crystal set 9 4 data locatorfor various models 19 13 data sheets, pre WWII, available via EUG 37 31 dealers (original and secondhand) see Dealers dial, slow motion, 958 -28 30 Edometer see Edometer ephemera (guaranteeforms, manuals,.brochures etc.) 36 15 factory see Factory, Eddystone featured models, receivers, index to supplement r „ 30 supplement 35 34 history 4 10 r 21 information required 13 12 9 Q 30 introduction to Eddystone, as schoolboy & subsequently -36 5 r

r issue page

Eddystone, cont'd listeners' club (pre-war) '21 l*

——«„„..«««•««»-»————•-—•■—•■•—~""~~""**—"**~——————————————*j « *•' loudspeakers see Loudspeakers Making The Most of Your Radio (booklet) 37 27

availabilty '20 n Better Radio Reception, publication available 36 33 booklets available 12 30 14 19 ZZZUZZ 15 23

3 g 33

from EUG, list of available 19 4 .3 7 14 How to Use Your radio 36 33 Short Wave Manual 11 19 advert for 32 27 39 1

3 9 36

41 2 exctracts from 3 8 3 38 13 40 20 Ultra Short Wave Guide 40 29 meters, S see S meters models appearances 12 23 choice of 3 5 25 date list 39 7 39 27 (Tor Marthinsen) 39 31 greatest number of- 17 18 list, 1929 - 1937 (Tor Marthinsen) 41 24 list & specifications, 1970 16 9 list available 36 33 list supplement errata (Tor Marthinsen) -25 23 number suffixes explained -21 9 . 1Q Q

Entvafiv - ..._-.„...... -..—.-——...——<.—-. 1 9 99 piCllA—— *•*• *••£« preferences of & reasons for (Ted Moore) -29 23 preferences (valve receivers) -29 29 prefix inconsistency 42 19 rogue (non standard) -31 21 modulation level indicator 678 see also Meters, Eddystone 17 13 modifications, affecting values 12 1 . .9 O Q originality, discussion of 36 8 panadaptors see Panadaptors power requirements, h.t.., battery valve models 37 1 prices see Prices, new & secondhand production, during WWII 37 15 publications see Eddystone, manuals

QSL card, tactory -—————————————— —————./ / j \ receivers, first encounter with (Peter Lankshear) 37 22 receivers, building of simpler types 39 8 40 9Q chassis for 40 5 issue page

Eddystone cont'd rogue models (non standard) — -31 21 Safety Lead - in —34 19 serial numbers, system of —12 21 Short Wave Converter, to build —41 7 short wave kit at Olympia Radio Show -30 24 speakers - see loudspeakers staff members, historic, with callsigns 42 29 televisions information sought — 4 10 28

transmitters 39 29 digital 41 0 440 model -28 5 -28 24 unknown models, information sought- —36 13 vibrator psu see Vibrator psu wiring, colour code -4 3 Woodburn, Geoff, employee see Woodburn, Geoff 24 9 WWII Eddystone components used- 7 Eddystone's contribution 23 letter of thanks at end of- 23 Eddystones, in use 4 2 r 7 Mersey tugboat — 19 Eddystone lighthouse presented with EB35 11 16 r history, Graeme Wormald 34 supplement The Red Rocks of Eddystone — 34 1 300 yearssince commencement • 31 1 32 1 34 1 34 supplement Edometer featured model- -—42 3 -—42 5 description— 7 11 .—.24 18 fault occurring 33 19 EM34, MIMCO 3873A Elettra- 5 2 r Electric shock -29 15 valves- -31 17 -35 5 Electro Magnetic Pulse —6 5 -31 4 Electrostatic charge —19 17 Empire Service, broadcast from Daventry —36 30 Ephemera -—----—--•——————————— ————— —36 15 Esoteric Propagation Phenomena -28 19 EUG 1 37 31 38 28 r datasheets available, pre WWII 37 32 issue page

EUG cont'd 32 Dyfed members— 10 37 files & archives — 15 index to featured receivers .24 supplement 30 supplement 36 34 manuals, list available - 19 4 availability 12 37 14 newsletter, copyright ••35 3 newsletter index -—40 31 overseas membership 13 19 14 18 17 10 publications • —36 33 reorganisation- .35 20 Short Wave Manuals see under Eddystone 80 metre net suggestion as to 38 29 sked details for first net 39 35 report on first net (Graeme Wormald) 40 35 (Ron Drew) 41 34 report on first & second nets (Jack Read) 412 34 report on second & third nets (Graeme Wormald) 41 33 report on third net (Ron, G8URU) 41 38 report on Feb & Mar'97 nets (Graeme Wormald) 42 36 Euralyus,HMS -24 10 Everest expedition see Oxford ML Everest Expedition Ext Relay terminals —12 17 Factory, Eddystone activities, current 41 0 photo 2 photo and factory advert 10 2 10 19 12 27 relocating 31 1 32 0 35 0 moved from after 56 years- 37 0 new address .38 0 39 0 Faults - see specific models listing aswell as below common, all models .9 c supplement finding 25 intermittent 10 7 supplement available 33 when new 34 22 FSK, definition g 5 FEC, definition ~"~~™~™""* 1 ^ 10 Filters, a.f. ——•—• 10 8 Finger plates, restoration of 3 ^ 33 Gain controls, linear & logarithmic — 12 GB2SM (Science Museum) 11 GB3RAL g 12 G6SL 30 0 activity 1935 31 2 GCHQ, definition g 5 GEC, connection with Eddystone 12 17 General election, Thermion 42 33 issue page

Glass see dial glass GPO, definition 8 5 Grease hardened 17 11 P 97 1 *2 ^ Grendon Hall, S.O.E. training centre 41 1 Gulf War, monitoring of 4 j Z!ZZZ!IZ~~I™ 9 i

Hagenuck

as, g J 5

Hammarlund HQ120 36 24 Handbury - Grassick, George 3 6 1 3 g i g Hanslope Park 11 17 Hawker, Pat -41 0 Hayward, Dennis 19 0 Headphones m available, Bulls 37 31 corrosion on sockets -41 15 GPO type 13 13 26 12 p 34 17 I hi fi type, use of 11 17 12 18 r 27 19 ! 30 20 34 H .--36 2 —37 28 .—40 22 ■—42 20 Heathkit RA1, comparison with -27 9 Heating of AC/DC models -27 2 H.f. / v.h.f. 'between' frequencies 15 22 History, Eddystone 4 10 information required 13 12 HRO, psu made by Strattons 40 26 Hum curing 9 23 14 11 670 19 6 investigating 12 3 r 13 15

IF convenor 959 42 7 j output take-off points -24 11

realignment—————————————————————^ / $

P stages, reradiation from 10 11 transformer cores 25 3

transformers —————————————————————j 5 j 2. P rejector tuning 10 16 I Impedance, input, importance of 32 12

i issue page

Imperial Short Wave Six (not Eddystonemodel) 31 8 Insurance for Eddystones 33 2* International Short Wave League, beacon booklet available 36 3 Interference see QRM, QRN Ionospheric Propogation Station 8 9 Ionospheric research station -22 11 ITTdefinition 8 5

Jarrett, Dr. (EUG member) 31 0

.27 21 Jones Plugs, source of- -26 22

King, Bob (Memories of Another Age) 41 29 & 42 34

Knobs, control cleaning 32 3

.27 13 source of supply 28 16 Lankshear, Peter 37 22 41 21 Laughton & Sons 17 5 Laughtons Pty, Australia 8 15

Lightning damage 3 9 18 protection '25 2 Lighthouse, Eddystone, transmissions from 7 3 Lighthouse Radio Station information sought 28 21 information given 31 11 Local oscillator, faults -26 17 Local radio station dx-ing -27 21 Loudspeakers Eddystone types & catalogue nos. 35 28 drawings of above 3 5 29 unidentified model 42 27 impedance, matching 38 21 internal, fitting of- 4 5 33 23 modern , in diecast housings 13 7 plinth 42 19 replicas of diecast, making of 39 2 Loudspeakers cont'd type to use 3 2 39 2 652 model -28 28 688 model 20 7 advert tor—————————————— —— ——— ——— — j. / $2. 1419 pillow speaker -21 2 McElroy, Ted (high speed morse record) 31 1 38 26 41 18 Magic eye 16 1 49 i 1 Magic wand, used in servicing 40 11 Main, Mike 32 10 issue page

Marconi archives, address 19 0 ^ connection with Eddystone 12 18 "" HR100, equivalent of 750/2 19 6 H2301,880/3 5 2 HR101 5 1

41 17

fN/TR S4 —————— ———— ————— —...19 17 ^, Pacific (1837) 26 1 Marine frequency bands (h.f.) 20 9 Mains filter (condenser problem) -25 4 Mains leads *27 13 m Mains voltage see voltage, mains Marconi Users' Group, lack of- -29 19 Marthinsen, Tor . 3 9 31 40 22 ! 41 24 Medium Wave Circle (club) 38 33 Medium Wave News Group 39 29 H Medium wave dx-ing -27 26 ! Memories of Another Age (Bob King) 41 29 42 34 rAjfCDT TXI ..—...... 97 91

Meters, Eddystone unidentified 17 19 6 (heterodyne frequency) -24 13 c-j-j 17 19 669, signal strength 3 6 19 678, modulation level 18 16

! 696/1, absorption wavemeter 18 16 3 g 19 m> Meters, test ! g 5 ' 10 13 correct type, use of 20 12 n is

21 16

not digital—————————————————————————ju £\ Meters, S - see S meters r Microphony 4 2 g 2

34 4

iviiiiiary moucib —————— - — ————— ———— - -i j y ; Miller resistor 19 7 MIMCO P" definition 8 5 i model references ------••------•---—————————— iy \/.

.22 10

_...... ———..—— ...... 1Q 1 1 i oentinel —————————————————————3 2.

■ 30 19

QQ1 Uriiaf Hjacrrintirtn ...... 9^. 1*7 OO1, UI 1CI UCotl ifJUUll ------———————————^*t i i r*i yoin/i i\j/1 —————————————————————————————j- - s i^ ' 2232A

i r issue page

MIMCO cont'd 3 823 A, brief description 24 17 3 873 A Elettra 5 2 42 11 6689 5 30 20 Morse code, usage of & Radio 4 programme 19 19 Morse reader

13 14 Motorboating "20 *2 & ; .26 2

MST apparatus 13 8 Multimeters - see meters, test Murphy, J im 2 8 2 3 6 i NASA, use of Eddystones -42 1

42 8

NATO designation numbers 24 10 release of EB35s -41 25 National Vintage Communications Fair report on I9 3 May 1995 31 0 May 1996 36 0 report on (Graeme Wormald / Chris Pettitt) 37 20 report on (anon) 37 27 NDBs 7 3

10 23

28 14 aerial for receiving 17 9 28 15 including ATU 30 30 best receivers -21 16 change of frequencies -21 10 definition of 12 10 general 35 9 early stations 32 17 location of 36 30 reception of- 3 0 15 Olympia Radio Show, 1928 30 24 Originality see Eddystone Oxford University Expedition, British Guiana, using Eddystones 38 1 33 g Oxford Mount Everest Expedition, 1936, using Eddystones 9 7 40 29

41 9 *

Paint, black crackle cleaning 10 9 12 17 supplier 25 18 Panadaptors advert, factory 10 25 16 18

.24 5 issue page

Panadaptors cont'd description, general -23 18

FP9 0 —————————————————————————3 7 4 blowing fuses 3 8 21 trace centering, fault 27 25 „___. _r ————— ————A*\ 99 usage oi—————— ———.. - — jj *.£. usewith 770R -33 31

fault on start - up ————————————————jd d

26 12 using & conversion 40 13

CrlUOlD ———— ————— - ^.^ xvy 959 convertor -42 7 Piccolo description 30 7 fitted to 830/9 6 5 reception -23 15 Polythene poisoning 38 26 Potentiometers cleaning 4 2 use of correct type 30 23 36 2 Power supply, mobile 14 14 Power for accessories (solid state) from within valve models 21 15 Practical Wireless 12 22 Prese lectors 41 12 2 valve (Eddystone Short Wave Manual) 11 19 Prices, new 8 19 r 16 3 ECR 40 25 r 1950 31 19 | pre and post - war -23 17 Prices, secondhand 13 11 [ 15 22

! 16 3

P Prices, secondhand cont'd 17 is

19 i6

.21 14

.22 17

24 1

94 17

.25 i

34 2

3 4 21

39 i

41 9 990 Series 27 22 Product detectors -26 21 issue page

Propogation 34 33

Publications see Eddystone Pulleys lubrication 10 9 source of "37 12 P.U. sockets see sockets

Q Fiver USe of 36 21 eliminating QRM -27 3 .29 15

.29 18

QRM

baby alarm 16 7 broadcast stations 9 7 eliminating by crystal phasing mod. 31 2 burglar alarm "25 14 cars, with mobile receiver 13 3 13 14 central heating 31 16 computers 16 13 .22 8

25 18 27 10

29 17

29 25 41 3 dial light bulb -25 16 domestic radios caused by & cure -28 9 caused by 29 27 doublet aerial 9 1 economy lamps 36 11 38 29 electric fence 13 3 electronic'smog' -25 4 esoteric types of 32 12 31 16 flourescent tubes 7 14 general & curing 15 19 91 ifi

40 27 glossy magazine 13 3 31 i g harmonic of Radio 5 -21 10 harmonicof Radio Eireann -26 11 heterodyne, caused by HRO 10 9 lighter, piezzo electric 31 16 local radio station, eliminating 6 5 .25 3

(wavetrap) —————————————————————j i o local noise, eliminating -21 9 mains borne, eliminating -29 29 33 9

3 4 21 mains earth 34 17 issue page

QRM cont'd sodium street lamps 13 7 soldering station 12 10 Talk Radio -39 33 television timebase 12 3 .26 1 -27 2

wavetrap to eliminate 7 6 QRN rain static, eliminating 13 13 general & curing 15 19

Eddystone, G6SL (copy of card) -27 31 Racal RA17 & RA121A Independent Sideband Adaptor 41 37 Radcom, feature on Eddystone (Pat Hawker) 41 0 Radio Amateurs' Examination, copy of 1946 paper -36 29 Radio Canada International 3 5 21 RAF Bletchley, 90 Group Signals Centre, memories of (Ted Moore) 41 1 RTTY network -24 19 Rallies, radio finding Eddystones at 25 2 caution when purchasing at 31 12 Realignment, a.f. power meter, to build -34 23 Reception general & what to listen to -28 14 improving 15 17 Receivers one valve, made from Eddystone parts -20 7 r simple TRF set built 41 6 Recomissioning after storage 18 4 32 18

Rectifiers f metal, replacement of with diodes 42 22 selenium, warning 34 26 substituting diodes for valves 7 14 (5W» J J g ! .26 6

42 2 n Redifon model R145, equivalent to Eddystone 1004 5 2 30 19

Repairers D.J. Bryan, G8IQK 7 12 H Centre Electronics 25 4 ! 9fi 9 R.C. Gilbert 4 1 7 15 r Philip Taylor -25 4 Wormald, Graeme 3 0 1 35 j f 36 23 ! Q7 9Q Replicas of 1930s models, intention to build 31 25 n Resistors \ ballast see resistors, dropper

Durni ————————————————-———— *+ ^

' caroon rou ————————————————— i ** j issue page

Resistors cont'd

■Poiiiifa r\f —————————————.'37 \(\ iauure oi ——————————— - j i ivi current measuring with 14 13 co lour co des————————————————.....—...... \\ 12 dropper — ...... 4 5

.2g 12

condensers as substitute 34 20 corrosion -27 29

.31 9 checking values 7 7 humidity, affected by 32 12 incorrectly color coded -28 28

problems encountered in Eddystone model -23 7 replacement, general 33 2

Resonance, L & C values in formula -28 22 RF gain, achieving -42 22 Rix, Lord Brian, G2DQU -29 22 Roberts Radio, taken over -31 11 Robinson, Heath, cartoon 34 19 RSGB Ionospheric Propogation Station 8 9 RTTY ——————— ....— - - .... —..— .... -11 13

17 ia «.„„««.„..»... v...... 11 i\j Rugby radio telegraph service, 1926 -27 24 S prefix to model numbers 12 22 S meter 4 2

5 3

8 14a .3 g 19 comparisons between different types 11 10 faulty 19 17 42 14 replacement pot. -25 2

siiCKing———~————— —— - v£. it S readings (signal strength) -29 2 Screen, Philip 36 23 a 6 x\

STC definition 8 5 Of A/1 1 _ ...... -.—...... S 9 ojU/ 1 1 ——————— — ———— j £ QG>f\it*. _ ___..„.._..•_...... —..—...... ——5 2 Satellite reception (770R) see also Sputnik 32 17 Scale plates, restoration of 36 33 Screened lead breakdown see also co-ax -27 2 Search and Rescue see Air Sea Rescue Selectivity poor 4 5 830/9, Piccolo 6 5

OoUAroAY ——————— —————————. . ... - —- - -.1ii I 10i \j Sensitivity, Eddystones, discussion of 37 18 Serial numbers, system of 12 21 issue page

tiMC ...... 1 (\ Q

4 Magic Wand, use of- 40 11 SETI

Project Columbus -24 15 Sferics

Short Wave convertor, to build 41 7 Signal generators CtflKjIjtV rtf ...... a...... 1 Q 1 types to use & BC221 -28 6

...... - — ~ ——————....-.——...... j"20 0 ^O Signal injector circuit for 12 16

Silicon sealants, caution -34 20 Silverfish, found in Eddystone 41 4 Simmonds band pass filter 16 1

S1TOR, definition of 12 10 Smells in sets, removing 42 28 Sockets, p.u., on rear of sets 16 5 Solar Cells

PR17 ...... 00 tc Solar noise, recorded on 770R 9 4 Solar panels see solar cells Solder, melting point of 7 7

Soldering, hints & tips 33 4 Solid state versus valves 9 14

! Spares, suppliers Birketts 1 5

I ...... *7I QC

...... _....._„*,Oil J I

...... 11 "1 ! ...... ————.—..—.—...... jo q

...•.—.-...... -..-.-.....-..-—.—...... I 'j 1 f

I Bulgin 12 2 Bull Electronics 13 15

Centre Electronics 8 10

...... 11 "5

——.^00 2 i1^ £. issue page

Spares, suppliers cont'd Centre Electronics 32 1 3 g 33

38 2

.26 20

32 5 Durrants "40 24 Eddystone, lack of availability for valve models -27 12

switches 32 19 miniature co-ax -40 13 Electrovalue (toggle switches) -29 9 T?T T/™1 (r\f\f \\ . _„_..„„..._——.-_——————————•.•••••••••36 V Isoplethics (coil formers) -26 24 ir Ton „„_„...... —.——...—————————————33 1

Map i in lJ 1J .26 20 Methodical Engineers -26 22 3 6 11 M & B Electrical 12 2 mystery stockholder, wound components 32 1 RS Components see Electromail Shackway, Sri Lanka (valves) -41 26 TanHv————————————————-————35 1 Taylor, Philip (valves, rubber leads, t'formers, dropper resistors) -—19 5 'in <

3 \ j 5

/7cW aaaress ————————— — jj j Valves see valves Spares, use of defunct Eddystones 14 4 Speakers see loudspeakers Spurious signals 3 1 35 2

oputniK —-.———————— - — - £. t

.27 16 Squelch, fitting to 940 12 12 SSB reception, earlier models 30 15 17 OQ

. -I 1 1 & mod. for am receivers 32 21 Standard Frequency stations 36 3

Standby switch, changes of use 12 1 Static, caused by rain 8 14 Storage, recomissioning after prolonged 18 4 32 18 Stratton & Co A Century of Achievement, copy of book sought 42 31 adverts AH Wa\/A Pnur ...... -. - ...... 3R 1 1 r\\\ YVCIYC rUUl ————— -- -- j\j 11 cpD .40 ^ 0

... .99 99

X) 9 ———————————————————————j^ ^

-\ 9 9-5

1Q O issue page

Stratton & Co adverts

680 14 18 components 29 16 31 29

^ 3 9 26

vhf components -21 20 m Australian history 12 6 HRO power supplies 40 26 letter from re 888A 40 23 power supplies manufactured, list of- 40 21 m v.h.f. r/t equipment 11 21 WW II history 12 5 WW II, letter of thanks at end of 32 23 m Suffixes to model numbers 12 1 Sunbeam Rapier, mobile use of EC 10 30 22 Switches

f*n 13 g | .27 13 fitting extra 12 11 m* mains ————————————————— ——u\2. 1 j ! toggle 4 2 wafer 4 2 f^ Tape recording outlets -22 17 Test meters, use with Eddystones see meters, test Thermistors

I 13 g sources of 29 22 Thunderstorms 8 10 | Time frequency transmitter, Australian 8 10 ! Tizard, Dave (silent key) 38 30 Tobacco smell, removing 42 28 Tools suppliers 5 2 trimming 4 3 27 8 use of correct type 32 9 Transformers adverts for via EUG -23 18 isolation, fitting to AC/DC models 32 6

-29 1Q output 4 4 13 5 protecting -25 3

suppliers 12 2 turns ratio -2 8 18 Transistors handling of, with regard to electrostatic charge 19 6 3 7 j 4 replacement of 34 17 substituting for valves 15 11 whiskers growing on early types -23 14 32 19 issue page

Transistors, cont'd whiskers growing on early types 42 29 Transmitters, QRP, within Eddystone receivers \ \ 3

Trawlers, source of radio equipment 33 3 Trichlorethylene, dangers of -3 6 14 T../* /CCfi i,«a/J An _—«•««»—...-...-—-...... 0 1 10 lug, oj7 usea on—————————————— - n i? Trimming tools -27 8 Tuning circuits & quality 31 3 Tuning mechanisms

lUDncaiion ——————————————— -o y

plinnona — ...... 9 d. 1 slippage ——————————— - At i

Tweaking, peak signal reception on specific frequencies -27 30 Values, Eddystone, secondhand see Eddystone, prices Valve rectifier, replacement by semiconductors see Rectifiers Valve construction projects -25 9 Valves adaptor, plug in to use differentrent types 32 10 age in receivers 13 9 bias 34 j burns, caused by -26 30 cap leads "20 10 *xa on cathode voltage checks -29 18 configuration in AC/DC sets 14 10 commonly used in Eddystones 2 5 CV designations fitted to MOD models 30 24 data sheets 18 13 19 ij

.26 14 EB34, heater glow 4 5 17 5 EB91 v EAA91 -23 12

ECC81 repalcing ECC82 31 9 ECC82 replacing EF39 -25 15

33 3 plug - in convenor 34 13 EF39, instability due to metallising loss -28 28 EF91, superiority over equivalents 13 11 emission low 19 1 27 29 testing for -28 11 EMP resistance 31 4 equivalents 2 5 14 3 failure 6 2 handling -26 30 3 o 17 incorrect, found in receivers 36 20 life of 36 21 anticipated 33 27 metallised octals 9 12 issue page

Valves, cont'd metal valves, shock warning 31 17

L63, equivalent to 6J5 -26 11 Mexican valves -24 8 N78 pentode, equivalent 7 14

.——————-——————————.————.——...... _...... „ g ii

——————————————————————————————— l j 15 rectifier replaced by diode see Rectifiers reliabi 1 itv of*-•——»————»-—"———•———«——•——————..2 8 1

retaining old 32 4 screen voltage, low 4 3 screening cans, too tight -23 14

suppliers Billington Valves 4 4

———•— ...... —.—.—...... Q ^yj Langrex Supplies 3 6 35 PM Components 4 4

W/ilcnnVY llDVstl \7jiIvpcVQlVwO ...... —.—.._—...— - ——— ———— ———.--——...... —_....t^ A ^A

12 3 36 35 UAF42 substituted for UAF41 -22 18 UL84 substituted for UL41 -26 22

valves versus solid state 9 14

vibration, effect on 3 3 2 6K7 to replace EF39 -29 17 vq FPl-nS R O

19 2

-22 7 -29 17 -31 13 6V6GT substituted for 6V6M -29 17 6V6M, electric shock from 10 15 6V6, substitutes for 17 5

Values, affected by modifications 12 1 Valve radios, powering up after storage see Storage Vaseline, used as grease 17 11 VHF signals on bands, reception of- 14 10

Vis (Voluntary Interceptors, WW II)

£*gicrs, £jn|...... ^^^ 24 King, Bob 41 29

VLF, 73 kc/s band 39 2 Voiceof America —35 1

Vibrator p.s.u. -24 8 issue page

VOTV \JLjLVLLJ MFT 1 ....—— ...... £9 ini ^j

Voltage checks, older models -35 15

11 O

.98 1 1 ! fluctuations 19 17 incorrect causing damage 8 16

spike eliminators -35 6 using Eddystone on 80 volts -23 11 using Eddystones on 110 volts (Peter Lankshear) 41 21 <**\ Wattage ratings 33 33 Waveband markings 15 13 Webb's Radio advert—————————————————————————...... i \ f% I

————————————— ...... 9 7 79

Eddystone receivers -31 26 "^ components 31 10

34 n

. -5C 9/1 | ...... jj ^^ I

25 26

Eddystone receivers 31 26 Scientific Four 41 14

hi*i^'fUI ICl HldlUljrlii ctf\f\/ —————————...... —————————.—————/ . 7 19j^ catalogue, components (sought by EUG) 35 23 McElroy, Ted (agent for) 31 1 working at during WWII (David Taylor) 13 11 Wind generator, driving 71 OB 9 2 Wireless World, 15/12/1938 copy sought 37 12 Wiring, colour code for Eddystones 4 3 World Dx Club -38 33 Woodburn, Geoff, Eddystone employee & historical information -24 9

3 7 12

4Q ic

...... —————— — ...... —— ...... tfu./lfi j1 yQ WWII Eddystone components used 41 7 Eddystone's contribution 38 23 letter of thanks at end of 32 23 practice for, 1939 (Graeme Wormald) -38 22 73 kc/s band, signals on 39 2 1948 station recreation -27 9 INDEX TO EDDYSTONE RECEIVERS

issue page

31A brief description 46 6 358 acquired by Graeme Wormald 43 6 advert for 43 12 drifting, cure 44 15 early and late sets, differences 48 22 Webbs Radio advert 43 12 504 scale plate photocopy available 44 27 values of, current 44 9 640 headphones, use of modern type 48 ...25 tuning mechanism, description & maintenance 43 9 46 4 usage under modern conditions 46 22 670 differences between MIMCO variant 43 28 useofUAF42valveinlieuofUAF41 43 10 670A audio, low 48 24 hybrid set 44 24 MIMCO 2245A, comparison with 45 30 680 advert for, Norwegian 44 10 superior selectivity over 940 43 28 use as audio amplifier 45 3 680X drifting 48 23 selectivity comment 43 30 700 in use on Gaelic Ferry 43 30 710 advert for, Norwegian 44 10 vibrator units, possible source 48 28 730 730/4 easeof dismantling & transporting 44 4 product detector, modifying for 48 4 repainting 46 28 740 Braille model, owned by Howard Turner 43 6 purchase & restoration, Peter Lankshear 43 41 repairs, various 46 4 valve replacement needed 48 27 issue page

750 advert for, Norwegian 44 10 refurbishment by member (Pete Roberts) 48 3

770R aerials to use 46 7 CM' suffix, info, required 44 6 Panadaptors, use with 45 30 unusual variant 45 13 used by General Electric, U.S.A 44 21 770U featured receiver 48 7 aerials to use 46 7 dial drive, restringing 48 5 820 repairs, various 46 4 48 ,.27 830 830/7, repairs to 45 ..29 830/9 case, different size 43 2 synthesiser, use with 43 2 Piccolo, use with 43 2 comparison with AR88/CR91A 47 22 drifting 47 16 840 advert, factory 46 31 Braille set 44 17 dropper resistor, substitute for 46 21 mains voltage fluctuations 48 28 840A a.v.c. problems 48 10 840C advert, factory 48 20 fitting of parallel tuned filter for improved reproduction 43 10 S meter adaptation 47 31 850 component values 44 16 pair in rack, used with teleprinters 45 8 850/4 errors in manual 48 22 870 owned by US member (green knobs sought!) 48 4 rectifier valve, failure of 47 3 repairs, general 46 19 restoration 47 16 870A reliability & general comments 46 1 880 greater recognition deserved 44 4 restoration notes (F6EFM) 44 15 880/3 issue

880 cont 'd brief description 45 22 manual available 45 22 46 1 Marconi H.2301, equivalent to 46 1 880/2 featured receiver 46 5 picture of 47 9

880/4 differences between 12 48 21 888 calibrator, repairs to 48 11 faults, various 46 2 888A query as to case without lid 46 21 909A hum, curing 46 2 940 early models, differences 45 ....3 46 3 47 19 poorer selectivity than 680 43 28 repairs to, various 48 16 958 /7E variant, first to have digital readout 46 6 manuals available, original 47 30 query as to suffix, digital display model 47 17 success of. 44 5 1002 IC, equivalent for TAA3 00 sought 46 13 noise, curing 43 24 1650/6 on surplus market 45 0 caution when buying 45 5 46 1 47 30 1810 Brief details 48 26 1830 German version purchased 48 26 1990 picture of station 45 2 description of station 45 6 All-World Two advert, factory 44 23 cost, new 44 27 review, Practical & Amateur Wireless (1936) 44 2 All World Six - see 710 Atlantic Two description, sold by Harrods 45 9 issue page

EA12 featured receiver 44 ] 1 advert, factory 48 20 faults 48 23 price, new 46 19 product detector, problems with 44 13 'S'meter 46 24 47 22 EB35 hiss, unaffected by volume control 43 27 transistors, replacement 44 9

EB35 II/S comparison with EB35 IIS 44 24 EB35 IIS comparison with EB35 II/S 44 24 EB36A excessive current consumption 43 27 EC10 advert, factory 48 20 hiss, unaffected by volume control 43 27 noise, reducing in output stages 43 27 overloading 43 31 Radiophile, The, featured in 47 1 resistors and condensers, ageing of 47 2 transistors, replacement 44 9 transistors, substitute, BC212 used in AF output 44 28 EC10 Mkll fine tuning control 47 17 ECR mint example bought (Tor Marthinsen) 47 31 EM34 brief details 45 4 ERA brief mention, vis a vis ERA7 43 30 confirmation of existence of ERA7 45 8 Everyman Four brief details 45 1 Homelander featured receiver 45 15 brief details 45 1 Homeland Four construction booklet available 44 34 Kilodyne Four advert, factory (Antarctic expedition) 44 7 advert 45 12 47 18 comments on Antarctic usage (Ted Moore) 44 25 Scientific Short Wave Three construction booklet available 44 34 discovery of existence ofby Graeme Wormald 43 5 issue page

Scientific Three Portable details, illustration & advert 43 22 query as todetails 43 10 Short Wave Two constructed by Martin Lindars & Graeme Wormald 45 32 report of set in use, Graeme Wormald 46 25 Sphinx information about 48 19 restoration of, major 48 16 Transmitter RAFCWR, c.w., crystal controlled featured model 47 12 47 31 building of example, Graeme Wormald 48 36 GENERAL INDEX

issue page

AC / DC models reduction of heat output 45 5 Advertisements, factory All World Two 44 23 bug key 48 30 coils, tuning, plug-in 43 3 48 9 components 45 26 EA12 48 20 EC10 48 20 Eddystone Short Wave manual 43 11 Kilodyne Four (Antarctic expedition) 44 7 Kilodyne Four (1933) 45 12 47 18 short wave components 44 26 45 17 45 18 Short Wave Converter 45 27 358X 43 12 840C 46 31 48 20 898 slow motion tuning drive 43 4 Advertisements, agents Dayzite, coils, plug in (1935) 44 20 Heftye ogFrogga/s, receivers 44 10 Aerials active, Eddystone 45 21 better reception booklets available 44 14 broadband 46 12 coaxial cable 43 23 dipoles use to reduce QRM 43 2 use with 770/990 series 47 2 ferriterod 43 2 invisible 48 28 long wire, failure of due to corrosion 47 17 loop, low altitude 46 18 publications 46 13 used to avoid QRM from power cables 45 5 v.h.f. 44 1 46 '. 9 for use with 770R & 770U 46 7 flat twin as feeder 48 2 wideband amplifiers suitable for 770 series 48 28 Alignment general 47 25 IF 47 3 issue page

Antarctic expeditions British Graham Land Expedition 1934-37 45 18 Kilodyne Four used 44 7

Arctic Expeditions Ellesmere Land Expedition 1934/35 45 19 Oxford University Expedition 1935/36 45 19 AR88 comparison with Eddystone and HRO 43 5 44 3 Avro Anson, used in anti - Knickebein research 47 6 BBC, coverage of radio transmitters, engineering maps available 43 8 Bathtub, extracts from official opening programme 46 15 BFO, rustling noises, curing 43 28 Blind Landing System 46 29 Broadcast stations, medium wave, spacing 47 26 Cartoon 46 14 Cathode ray tube, spot burning through screen (?) 47 2 Cleaning, tuning gang 47 .26 Coils, Denco, available 47 2 Coaxial cable corrosion 46 13 history 43 23 Coils formers made by Isoplethics 45 21 making own 44 8 winding details 48 9 Components, life expectancy, comments on (Ted Moore) 45 29 Condensers ageing of 47 2 electrolytic, replacement types to use 43 24 Hunts, becoming defective 43 28 mica, failure 43 29 noise, caused by electrolytics 43 28 Cooke, Bill autobiography (brief!) and involvement with Eddystone 48 31 Cross modulation, description and explanation 43 35 Devereux, Ray infoon770R 44 21 44 27 Dials - see under Eddystone Digital frequency readout, available from USA 48 14 Diodes, GEX54/3, orange spot, not suitable 43 3 Distortion testing, transient intermodulation 45 23 Earthing, information & advice 44 13 Earth link, on rear of Eddystones 44 13 Eddystone active antenna 45 21 LP3382 46 5 bug key in constant use 33 years 47 32 advert for 48 30 issue page

Eddystone cont 'd coils, plug in 43 3 44 16 48 2 advert for 48 9 components, manufacture of (magazine reprint) 47 20 Cooke, Bill, involvement with company 48 31 design innovations 44 3 dial drive, restringing 48 5 dial glasses, query as to remanufacture 48 12 diecast boxes 45 22 earthlink, at rear of sets 44 13 factory activities Geoff Woodburn 43 30 Bill Cooke 48 31 factory reorganisation 48 35 Four Band Amateur Transmitter, featured model 43 13 history, snippets of (T.K. Parker) 44 3 Kilodyne Four, booklet available 47 29 manuals, older models 47 ..19 modulated oscillator, v.h.f., Eddystone Short Wave Manual 43 26 Mullard valves, models using 45 20 museum, factory 43 0 numbers of sets made, WW II 45 7 prices, new 44 1 45 31 46 19 p.s.u., made for HROs 46 6 publications Better Reception 44 14 45 1 Homeland Four construction 44 34 Scientific Three construction 44 34 shortwave manuals 45 10 receivers badged as other makes 43 29 comparisons with other makes 43 5 pre-war models, notes on (Tor Marthinsen) 44 19 spares, see Spares television receivers 44 8 transient intermodulation distortion testing 45 23 transmitters broadcast, N.Z 43 28 Polish 45 8 48 33 tuning drive backlash 43 27 turret tuning mechanisms 43 23 7 metre conversion kit 45 11 75th anniversary of company 47 27 Eddystone Lighthouse, stamp issue 48 3 Edometer, seen at rallies 43 1 issue page

EUG badges available 48 36 Newsletter, size of 48 36 80 metre net 43 21 45 31 46 28 Filter, fitted for improved reproduction 43 10 Fuses, use of correct type 43 7 Grub screws, removal of. 43 28 Hallicrafters Champion, advert for 47 6 Harrods, Eddystone receivers sold (1928 catalogue) 45 9 Headphones, use of modern type 48 25 High Altitude Aurora Radio Frequency Project (HAARP) 46 18 Hot components 43 27 HRO comparison with Eddystones 43 5 44 3 p.s.u. made by Eddystone 43 24 Hum, curing 47 27 I.F., alignment tips 43 27 International Broadcasting Convention, Amsterdam attended by Eddystone 45 0 Internet, Eddystone site 43 41 Isoplethics, suppliers of coil formers 45 21 45 25 JodrellBank, useof770Rs 44 27 Jones, Dr. R.V., death of 47 5 King, Bob 43 7 Knickebein 47 5 Lankshear, Peter, purchase & restoration of 740 43 1 Loudspeakers, 906 plinth speaker 45 8 Manufacture of components (magazine reprint) 47 20 Marconi H.2301, equivalent to 880/3 46 1 Medium wave, station spacing 47 26 MIMCO 2245A, comparison with 670A 45 30 3873A model's Eddystone equivalent 45 4 Marthinsen, Tor ECR purchased 47 31 information on pre-war Eddystone receivers 44 19 Marsh, Brian (N.Z.), comment on 880/2 article 47 10 Megatron, combined Eddystone receiver unit 44 22 Medium Wave, additional bandwidth granted in USA 47 8 Memories of Another Age, by Bob King (cont'd) 43 17 44 29 Mullard valves, Eddystone models using 45 20 NDBs aeronautical, list of, U.K 43 39 maritime, list of, Europe 43 37 heard on East Coast U.K 43 36 N.Z.A.R.T., Eddystone contest 43 32 Overheating, need for ventilation 45 5 issue page

Painting caution needed 46 21 730/4 46 28 Panadaptors EP20, repairs to 48 22 for use with 740 46 20 for 770 series 45 30 Parker. T.K., notes & info, from erstwhile Eddystone employee 44 6 Paton, Ross, Eddystone & Strattons information received 47 11 Pettitt, Chris, managing director leaving Eddystone 47 0 Polish transmitters, made by Eddystone 45 8 Product detectors, making of for earlier receivers 48 5 QRM mains borne 43 27 temperature related 43 8 use of dipole aerial to reduce 43 27 Radiophile, The, EC 10 featured 47 1 RAF Stanbridge 48 2 RAF Civilian Wireless Reserve 48 37 Resistors, ageing of 47 2 Rl 125, made by Eddystone 46 29 Screws BA sizes used in Eddystones 43 28 grub - see 'grub screws' Selectivity, poor, cause of 47 25 Silicon, used in early Eddystones 45 5 Soldering tips & advice 43 16 44 22 Sonic Sound, info, on company sought 45 5 Spares availability of. 46 3 Centre Electronics (general, Eddystone) 46 3 coil former sockets, 6 pin, sought 47 11 Denco, coils & IF transformers 47 2 dial glasses 48 29 Douglas Electronics Industries (transformers) 46 19 IF transformers, general comment 47 2 Isoplethics (coil formers) 41 21 41 25 48 29 vibrator units 48 28 Spares suppliers Centre Electronics 46 3 48 29 Denco 47 2 Douglas Electronics Industries 46 19 Isoplethics 41 21 SSB, reception on older models 45 3 Strattons wartime broadcast transmitters 46 22 p.s.u., made for HROs 46 6 Switches, toggle type 43 28 issue page

Transformers, toroidal, to run a.c./d.c. models cooler 47 28 Transistors replacements, EC10/EB35 etc 44 9 substitutes, BC212 used in output stage of EC10 44 29 Tuning gang, cleaning 47 26 Valves bases adapted 47 28 equivalents 6C5for6J5(not!) 48 1 6K8/ECH35(not!) 44 9 44 25 48 2 L63 for 6J5, query as to 47 16 response (B. King) 48 1 UAF42 used instead of UAF41 43 10 6005, equivalent for 6AQ5 & EL90 45 5 6AK6 in lieu of EL91 45 30 production figures 43 31 removal of, hints (Peter Lepino) 44 28 solid state devices, in lieu of valves 43 ..40 Varistors, failure in extension lead 43 7 Whittle, Duncan 48 0 Woodburn, Geoff (dec'd), activities at factory 43 30 Wormald, Graeme discovery of Scientific Short Wave Three 43 5 one valve challenge 45 10 46 19 500 kc/s still inuseforc.w 47 16 48 3 5 metre transmissions 47 23 page Lwo

INDEX TO EDDYSTONE RECEIVERS

issue page

31A catalogue extract 49 9 214 & 215 brief description 52 6 53 11 358X bought at car boot sale 51 23 repairs to 49 17 valves 49 31 440 & 450 brief description 52 6 53 11 504 advert 53 9 640 advert 53 9 distortion 52 2 modified for 2 metres 53 6 problems with set acquired by member 53 19 query as to handles (or not) 49 27 query as to internal speaker 50 3 659 identification vis a vis 670 49 20 659/670 hybrid model 51 2 670 identification vis a vis 659 49 20 670A condenser problems 50 36 680 transformer rewind 50 29 680X featured receiver 53 16 advert 52 31 purchased in Cornwall 51 22 restoring to original 54 7 700 featured model 49 14 schematic, reference to 51 5 two owned by member 51 30 720 Yachtsman &EY 11 equivalent 53 15 730/4 burning smell, HT tracking 50 36 colours 51 31 740 S Meter fitted 51 30 750 a.f. output, loss of 53 2 i.f. frequency 51 3 tuning gangs, cleaning 52 20 with S meter (?) 49 27 issue

750 com *d 750/2 differences vis avis Marconi HR100 49 31 750/2 MIMCO 2232 equivalent 50 ..39 770 advert, factory 50 35 770R II receiving satellites 50 33 used in 2 metre station (Canada) 51 23 770S variants 54 12 820 advert (Strattons) 1955 51 35 repairs 53 5 tuning problem 51 4 830 origins of 54 11 830/4 purchased in Canada 51 23 830/7 transformer problems 54 7 830/9 coax fault & replacement 49 5 not working 51 5 830/12 description & Hagenuk E81 equivalent 51 31 840A i.f. transformer problem 52 19 query as to valvebases 51 29 840C advert 52 31 a.g.c, poor, cured (G3GGL) 51 24 dial illumination 54 28 live case 54 3 poor performance at l.f. 52 4 850/4 error in manual 49 27 repairs to 49 16 870 advert 52 15 improving signal reception 49 3 no. of valves (early models) 50 31 870A advert 52 31 resistors replaced 53 12 880/2 advert 52 31 monitor speaker repairs 49 27 888A advert 52 31 calibrator ■. 54 4 909 restoration by member 54 2 930 featured model 51 6 model variants 49 32 930/12 51... 3 940 component failure 49 28 gain, low 52 29 four issue page

940 conVd purchased in Scotland (Brian Abrams) 50 26 52 33 4S' meter problems 54 5 used in AFVs 51 4 variants 54 13 958 catalogue extract 49 9 958/4, Marconi H2310 equivalent 54..... 13 958/5, Mimco Nebula equivalent 52 12 960 advert, Strattons 54 23 964 catalogue extract 49 9 990R catalogue extract 49 9 990S production totals 54 15 1001 catalogue extract 49 9 1002 catalogue extract 49 9 fault, curing rack mounting - not! 49 27 1004 catalogue extract 49 9 fault repaired 49 3 1650 brochure (reference to) 49 21 1830 advert, factory 53 14 info sought as to /ICE suffix 54 16 1940 featured receiver 53 9 1990R catalogue extract 49 9 All World 6 owned by Tor Marthinsen 54 18 AH World 8 featured Wireless World 1936 53 23 EA12 repairs to 49 17 cw/ssb mode failure 53 20 EB35 BC212 transistor fitted to f.m. section 49 4 catalogue extract 49 9 f.m. reinstated 49 4 zener diode noise 50 33 EB36A query as to GPO use 51 29 EB37 featuredreceiver 50 10 ECR owned by Tor Marthinsen 53 11 EC10 advert, Strattons 54 25 EC10M acquired by member 54 15 page five issue PaSe

Eddystone 2 Valve receiver blueprint 53 3 EM34 repairs to 52 29 Marconi Elettra 54 16 Everyman Two information sought (Blueprint 950) 49 31 53 4 Orion 5000 featured model 52 12 5600/2 version 52 21 Portable query as to 53 13 Yachtsman EY11 & 720 equivalent 53 15

(General Index Next Page) pager SIX

GENERAL INDEX

issue page Advertisements - factory components 49 29 components, shortwave 50 38 Shortwave Manual (1938) 49 13 1830 53 14 Advertisements H.P. Radio (680X, 840C, 880, 888A, 870A) 52 31 Imhofs (EB35, 940, EC10, EC10 II, EA12) 54 10 Stratton & Co EC10 54 25 S689 bug key 50 16 870 52 15 940 53 34a 960 54 23 shortwave components 53 6 Webbs Radio 504 & 640 53 9 670, 680, 710,720, 740, 750 53 34b component advert (1946) 50 8 Aerials feeders & matching 52 32 ferriterod 52 21 HF wideband 50 27 highor low Z 52 3 forNDBs 51 32 Airband signals, h.f. see also RAF 52 10 ATU for medium wave 53 20 Avo meter, use of 52 19 Battery corrosion (EB/EC series etc.) 50 36 Bletchley Park 51 0 Blueprints see Eddys tone Broadcast band, extension of medium wave 49 28 Burglar alarm, fault found by 8 yr old girl 53 7 Composite Signals Organisation 51 0 Condensers failure 49 28 paper dielectric 49 8 Co-ax cable end sealing 49 22 faulty . 49 5 use of silicon sealant -not! 50 39 Coils see under Eddystone Condensers, electrolytics, reforming 50 36 Cooke Report, The, Part 2 49 22 Part3 50 22 Part 4 51 17 Part 5 52 14 Part 6 53 30 Part 7 54 22 Derby & District Amateur Radio Soc, 1949 52 38 Digital Audio Broadcasting MW&SW 53 36 in U.K. 51 32 shortwave (Deutsche Welle) 52 9 >agL- sewn

issue

Digital frequency readout conversion 49 33 Diodes, noise limiting 51 29 Earthing of receivers 49 32 Eddystone accessories & components list, 1963 52 24 Blueprint register 49 1 49 6 52 33 53 1 Bug key, S689 50 13 components made in house (pre-war) 49 18 crystal calibrators 54 4 dates of models manufactured, 1936 - 1976 54 20 dating manufacture 54 18 drive cords 52 19 restringing 52 22 drive mechanism, use of grease or oil 50 31 (RossPaton) 50 40 factory happenings 53 8 54 0 54 1 54 28 handles, query as to fitment, EB/EC series 51 28 NATO stock numbers 54 13 prices current 49 8 1950 53 34b 1960 49 32 reference guide, quick 50 33 53 20 amendments to 51 22 restoration, Gary GW8BNL 52 23 RF gain potentiometers 50 11 *S' meter problems 54 5 servicing guides available (ex Radio & TV Handbooks) 50 9 , 52 36 notes on 53 22 sets as antiques (?) 49 2 Shortwave Manual advert (1938) 49 13 spares see Spares speakers see loudspeakers Surman, Christine, retiring from factory 54 14 tropicalised receivers (pre-war) 52 5 tuning gangs, cleaning 52 20 valve replacement table (Peter Lankshear) 50 17 v.h.f. pioneers 52 5 6 pin coils 49 33 Edwards, Arthur, G6XJ 54 28 52 35 EUG bookshop list 51 38 E Mail address 50 25 51 37 52 13 G3EUG callsign holder sought 53 0 54 0 membership statistics 49 21 models owned bymembers, survey form 50 34 survey results 52 36 .'clLU' L-iii.ll (.

issue page

EUG cont 'd website 52 1 52 13 80 metre net 52 18 Fairey Swordfish 52 35 Filtering, uhf, using another Eddystone (!) 53 29 Fokker D VI replica (Graeme Wormald) 49 18 50 26 50 32 G6SL callsign 52 0 52 33 53 1 QSLcard 54 29 54 30 used in 1930s 53 10 G6XJ, Arthur Edwards 52 35 54 28 HagenukE81, equivalent 830/12 51 31 Hawker, Pat, G3VA 53 21 Headphones, adapting modern types 50 9 Howling problem 50 39 50 12 H.P. Radio, advert, 1962 52 31 Hudson Straits Expedition, 1931, info sought 53 15 54 40 I.F. transformers adjustment of 52 19 refurbishment of 53 8 Imhofs, advert see advertisements Interference see QRM/QRN Jarrett & Rainsford, evolution chart 52 8 Jeep(G4HNH) 50 11 Junk box, yielding Eddystone components 54 8 Leakage, audio stage, caused by wax 52 21 Loudspeakers horn type 52 7 Reevo, badged as Eddystone 52 34 seen at NEC 52 13 updating 49 27 Marconi HR100 vis a vis 750/2 49 31 H.5011 FSK adapter 54 11 3321 & 5700/1, query as to 49 31 Marthinsen, Tor, owning ECR 53 11 MIMCO Kestrel, query as to 51 2 Nebula 52 12 3873A 52 29 54 16 National Vintage Communications Fair May '98, report 49 0 49 1 NATO stock numbers 54 13 NDBs aeronautical beacons 53 36 demise of 52 1 52 9 52 10 aerials for 51 32 Nets, a.m., Canadian 51 22 page in lit-

issue page

Oscilloscope, use of. 52 19 Oxford University Everest expedition 53 10 Panadaptors EP961, catalogue extract 49 9 EP1061, catalogue extract 49 9 52 2 Portishead Radio, going QRT 53 13 Potentiometers, modern types as replacement 50 32 QRM energy saving bulbs 51 36 carpets 50 36 HRO 50 32 QRMorQRN? 50 32 re-radiation from domestic sets 50 28 QRNorQRM 50 32 RAF Civilian Wireless Reserve 6 w.p.m. badge 49 20 h.f. traffic, query as to 51 1 Raymartcoil formers 54 18 Red Baron, the see Fokker D VI Resistor failure 49 28 Resistors, dropper 51 36 Science Museum, GB2SM 53 21 Servicing Guide to Valve Radios , available 54 40 Shortwave receiver, construction project 54 32 Signalreception improving on 870 49 3 Solder, use of correct type 50 31 Spares Birketts of Lincoln 50 9 51 36 co-ax plugs sought 51 28 Isoplethics (matching to modern headphones) 50 9 50 12 coil formers for Eddystones 51 37 52 5 Methodical Engineers 52 32 Simmons, Dave, taking over Eddystone spares 54 30 octal plugs sought 51 28 transformers see transformers Standard frequency transmission, query as to Australian 50 31 51 36 Stratton & Co 'A Century of Achievement', book 51 25 52 1 52 4 adverts EC10 54 25 870 52 15 940 53 34a 960 54 23 shortwave components 53 6 S689 bug key 50 16 G6SL callsign see G6SL Stratton Portable transistor radio 53 34 WW II activities & bombing 52 4 53 11 WW II production list 1 25 issue page

Surnian, Christine, retiring from Eddystone 54 14 Transformer rewinding 50 29 52 9 Transistors BC212 clarification 50 31 U Boat radio equipment, info, sought 54 5 Valves EF50, use in WW II 50 11 EF50 history 51 9 equivalents 51 27 KT66-R being manufactured 54 8 manufactured in Czechoslovakia 51 32 regulator valves, VR series 50 28 replacement valve table for Eddystones (Peter Lankshear) 50 17 retention of old, importance of 49 28 6K8 vis a vis ECH35 51 27 6C5triode 52 2 Voltage dropper, AC/DC sets 50 1 Ward, Fred, G2CVV 52 38 Webbs Radio adverts see advertisements photo of shop 1935 50 23 Wood Norton 52 36 Zener noise 51 1 3 x EF50 receiver (G5JU) 50 1 50 2 52 39 H.E. Styles 53 21 53 24 (G5UM) 51 10 error in above article 51 24 19 set used in Jeep (G4HNH) 50 11 500 k/cs, Morse still heard 49 28 INDEX TO EDDYSTONE RECEIVERS

issue page

31A Eddystone & P.O. versions 57 10 query as to existence of Model 31 58 17 358 modifications, query as to Royal Navy 57 10 queiy as to date introduced 59 7 restoration of 55 1 440 advert for transmitter .. 55 38 504 instability problems 58 34 556/B solid state vibrator sought 59 7 above available 60 . 4 640 amateur use in 1950 55 35 cooling, improving 59 , 5 double superhet modified set 55 ., 26 FETs, use of.. 57... 6 MIMCO badged version (not ?) 55 20 ocean voyage, used on (1952) 55 26 serial nos., query as to early 58 18 testimonial, Calcutta 57 34 testimonial, Abu Sueir 59 24 tuning gang cleaning 55 13 valve, repairing 56 4 659 description 55 20 659B testimonial, Tanganyika 59 24 659/670 testimonial, Invercargill 57 34 testimonial, S.S. Ranheim 59 24 670 used in Montreal 55 39 testimonial,British West Indies 57 34 testimonial, M.V. British Bombardier 59 24 testimomal, MV La Pampa 55 39 57 34 670A mains switch, faulty 56 5 new valves fitted 59 4 670C/1 Mimco 2232B 57 9

22 820 fault repaired 59 6 query as to coverage 56 12 830 featured model 55 14 colours, query as to 58 17 common faults 55 16 filters, crystal 56 3 government & services usage, query as to 58 18 Piccolo 56 3 microswitches 57 11 770, use in conjunction with 60 5 840 20 years in use with member 59 8 840A AF driver stage fault & cure 58 27 Brimistor & new bulbs 56 5 special variant 60 7 tried out by member 59 12

840C faulty connection, dropper resistor 56 5 870 Antarctic, account of use in (Peter Chisholm) 59 32 advert, Strattons 59 33 870A dropper resistor, replacement by transformer 56 5 881 brief description 57 9

improving ssb reception 59 13 888A repairs to .. 56 30 909 quest for & acquisition of (Anthony Richards) 59 9 910 similarities to 830 55 33 940 AVC fault, curing 58 25 in use with G4DTC, Ray Howgego 56 13 in use with G.E.W. Hewlett... 56 13 repairs to 60 38 restoration of, Jeff King, ZL3TNV 56 18 stenode modification 56 12 958 ratio arm, setting (Simon Robinson) 56 17 scale cursor query (Jim McGowan) 57 10 scale cursor cured as a result of above 58 18 680 testimonial,Iraq Port Directorate 57 34 used in Belgian Congo 55 39 680X variants 57 9 700 in use on RMS Queen Mary 55.... 37 query as to vis a vis IMR54 56 12 710 used in Nigeria 55 39 730 corroded solder joints 55. 33 drive system, cleaning 56 2 i.f. s, aligning . 60 18 testimonial, BBC 57 34 730/4 polychromatic brown version 56 12 resistor failure 59 25 730/6 variant 58 17 740 aerial impedance, importance of. 59 6 testimonial,Victoria, Australia 59 24 750 design fault possibility (G3XFE) 58 8 featured model 57 21 comments, Chris Pettit 57 0 faulty audio capacitor 55 20 modification reversed 59 5 review, "The Radio Amateur', 1952 58 9 'S' meter to make 57 23 testimonial, New York State 55 39 testimonial, Toronto 57 34 valve holder problem 58 8 770R restoration, major 60 9 Turkish version 57 7 58 5 comments by Bill Cooke 58 33 770RMkn improving performance (Brian Cauthery, VE3DFC) 59 15 shorting plugs 57 25 58 5 58 33 60 19 used by RAF & RN 58 6 830, use in conjunction with 60 5 770S variant 57 10 990R drop testing, factory 60 37 in service at gliding club 55 5 1000 new toggle switches 56 5 1650 featured model 58 19 designer in EUG , 60 6 loss of by factory 58 2 story of (Chris Pettit) 59 26 Operation Raleigh, used by 58 2 1837 featured model 60 13 6200 continues in production 55 35 All World Two acquisition & description, G3GGL 56 27 All World Four full description, all variants, accessories etc 58 37 testimonial, Salisbury, S. Rhodesia 59 24 used in New Guinea & Solomons, WWII 55 39 All World Six testimonial, Papua New Guinea 59 24 EA12 caution re diodes 60 5 EB35 batteries, use of PP9 56 5 replacing panel bulbs with LEDs 55 27 Zener diode & dropper resistor 60 20 EB37 batteries, use of PP9 57 3 frequency drift, curing.... 58 26 low gain 56 2 nicads, use of. 57 2 EC10 batteries, use of PP9 56 5 fine tuning problem 60 8 i.f.s cannibalised 56 16 instability, curing 59 28 purchased by member. 59 12 QRM, curing (Radio 4) 57 4 p.s.u. PCB 60 31 replacing panel bulbs with LEDs 55 27 restoration (G3XFE) 60 36 selectivity improvements & service notes (J. Duckworth) 57 18 switch wafers, loose 56 4 transistors, replacing OC171s with BSX29s 59 28

O.5 EClOMkll static causing transistor failure 58 16 'S' meter problem 56 15 EC10A protective diodes 55 22 Everyman Short Wave Receiver Improved version 57 12 57 13 EY11 prototype model 55 22 featured model 59 22 Kilodyne 4 advert, Strattons 60 22 Orion 5000 notes on development & marketing 59 2 Orion 7000 HF radiotelephone production ceases 55 22 Radiosonde receiver featured model , 56 25 Scientific Four sold at auction 58 33

2.6 GENERAL INDEX

issue page

Advertisements Arnold & Wright, N.Z .56 14 coils, Strattons : 57 5 Eddystone vhf transmitter, L Grout 55 38 Kilodyne 4, Strattons 60 22 Magraths of Melbourne 56 11 short wave components, Strattons 60 21 870 receiver, Strattons 59 33 Aerials attenuator 60 20 crossed field antenna 60 6 impedance, matching 59 6 60 19 Marconi T 55 21 member's new system 55 11 open wire feeders 55 10 static, curing... 59 5 tips, general 60 4 twin feeder type, advantages of. 60 8 vertical... 60 35 Aerial tuning units 55 6 57 8 Air traffic, RAF&USAF on 11.175 mHz 55 27 Amateur Radio Techniques, book by Pat Hawker, G3VA 59 4 Antarctic usage, 870 (Peter Chisholm) 59 32 AVC/AGC, brief explanation 55 21 Batteries nicads, use of in EB & EC series 57 2 type to use in EB & EC series 56 5 57 3 Bathtub see Eddystone Callsigns registration plates 60 35 requesting specific 60 34 Cannibalisation of Eddystones, Ted Moore's comments 55 1 Capacitors see Condensers Capacitor reformer, construction project by Simon Robinson 55 23 Carbon tetrachloride, used for cleaning crystal wafers 55 3 Cartoon, sergeants' mess, D-Day 57 40 Centre Electronics, closure of (not!) 55 6 Chassis for replica sets 55 33 Coils, winding data 57 12 Cleaning crystal wafers 55 3 drive systems 56 2 fluids , 57 8 scale plates 56 5 tuning gangs 55 12 vacuum cleaner, use of 56 6 Condensers use ofNOS (new old stock) 57 4 ..58 13 coupling, problems & types to use 58 16 reforming 58 28 Condenser refonner (Simon Robinson) 55... 23 Cooke Report, The Part 8 55 28 Part 9 56 20 Defence Medal see Voluntary Interceptors Digital Audio Broadcasting 57 0 59 7 Diodes protective 55 22 power supply, replacement types 59 7 fuse change following above 60 5 Eddystone AC/DC models, heat generation, HOv transformer cure 57 3 .58... 6 Bathtub photo, mystery model 55 5 Bathtub photo, comments on 56 15 blueprints, initials on 60 6 company policy, postwar 57 24 components, use of in different models 55 7 distributors' shield, photo of 55 36 drop tests, factory 60 37 Eddystone Short Wave Manual see immediately below 'Eddystone Specified' (components), projects: Fury Four 59 17 portable 2 valve receiver, WWII 55 17 miniature amateur station 56 32 shortwave receiver, 1 valver 57 28 notes on circuit 60 37 Short Wave Two Battery Receiver ; 58 29 v.h.f. receiver 59 7 3 valve v.h.f. receiver 60 26 f.m. transmitters for Falkland Islands 60 17 handbooks etc. see Spares

Q.8 Eddystone, continued,.

history, post 1860 57 35 58 12 59 30 60 21 i.f. transformers, damaged , 55 16 loss of 1650 receivers by factory 58 2 story by Chris Pettit 59 26 similar event 60 20 Marconi, sale of company to (1965) 59 11 Megahertz Communications, taken over by 55 0 55 35 Panadaptor,EP20, fault 55 34 Panoramic Receiver 1161, development & sales 60 2 preselector, shortwave 56 7 prices secondhand (current) 58 10 Scientific Four (current) 58 33 Rwanda, f.m. transmitter 59 2 'S' meter (Australia), query asto 56 11 replacement of original cable 56 6 serial numbers, prototypes 56 31 spares see Spares Sutton, Roger 60 6 testimonials, 1950s 55 39 57 34 59 24 transistor portable prototype 55 1 web site, Eddystone (Alan Clayton, not factory) 59 25 59 34 640 used on 10,000mile yacht voyage by Dr. T.R. A. Davis (1952) 55 26 1529 demodulator 59 2 1629 modulator 59 2 Eddystone light query as to replica 59 8 song 60 40 10" model available 60 40 Encryption of embassy signals, query as to receivers used 59 35 possible answers 60 6 Enigma, machine stolen 60 34 EUG capacitor reformer by Simon Robinson 55 23 newsletter contributions on disc 57 4 EUG continued..

National Vintage Communications Fair, at , 55. 16 ... 55 38 oldest member ? 60 34 receiver cut-off date? . 56 1 57 1 web site see Eddystone web site 80 metre net 55 36 58 4 1650 designer joins 60 6 EUG, navaid in Oregon 57 5 Falkland Islands f.m. transmitters bound for 60 17 medium wave broadcasting 60 16 Fuses, checking for correct type 59 6 Grease, plastic see Spares GCHQ Cheltenham, monitoring phone calls 60 5 GEC BRT400 receiver 58 11 BRT402 receiver 60 19 renamed Marconi 58 10 G3EUG erstwhile licensee sought ... 55 0 56 10 G6SL callsign held by EUG / Chris Pettit 55 0 56 ...10 Fault finding corroded solder joints 55 33 Headphones adapting stereo 'phones for Eddystones 55 12 I.F. transformers, alignment of (G3XFE) 60 18 Interference see QRM Jones, Prof R.V 56 27 Mains electricity supplies, voltage variation 57 2 Marconi H.5011FSK adaptor 56 4 sale ofEddystone to (1965) 59 11 Mast, planning application for (Chris Pettit) 58 2 Megahertz Communications export award '59 14 Kenyan TV & radio station contract 58 7 59 14 Midi-TV contract (S. Africa) 57 27 take-over of Eddystone 55 0 television production 4wd truck for Namibia 56 29 Meters, digital, use of 57 7

30 MIMCO differently badged Eddystones, infonnation sought 55 7 2232B 57 9 Morse code, boot camp details 60 35 Most Secret War, book by Prof. R. V.Jones 56 27 Multitone Electric Co, TA38 transmitter, info sought 58 17 , 59 4 Murphy, Jim, correct address 60 7 National Vintage Communications Fair report & photos, May '99 55 16 55 38 NDBs, finding & listening 56 ! 4 Operation Raleigh, loan of 1650 58 2 Paint, crackle, rejuvenator see Spares Parkes, Matt, photo 57 0 Phonetic alphabet, peculiarities 58 11 Potentiometers, noisy, curing. 60 20 Preselector, shortwave 56 7 Prices see under Eddystone PCB, using for EC10p.s.u. 60 31 QRM spurious signals, Radio4 57 4 tracing of 55 9 Radio rallies 60 2 RCA AR88, mention & photo 57 20 RMSQueenMaiy photo of wireless room withIMR54 55 37 query as to receiver used 56 12 RTTY, using with 750 56 16 R208 57 27 'S' Meter, suitable valve models, circuit & description 57 23 Screws, grub, freeing off. 56 6 Sensitivity, receivers, notes on (Anthony Richards, GW4RYK) 57 19 Smoke theory 60 25 Spares Birketts, transistors 60 36 Centre Electronics 55 6 CPC connectors, mains 60 33 crackle paint renovator 60 32 plastic grease 60 32 CS' Meters 60 32 EUG, made by (not!) 59 5 Farnell Electronics, coil box screws 58 28 i.f. transformers 55 16 Jim Fish (valves) 59 25 Langrex Supplies (valves) 59 25 3\ Spares, continued..

Majestic Transformer Company, rewinding service 57 1 Maplin condensers 58 33 rubber feet 58 . 33 Richards, Anthony, plastic tuning cog sections , 60 ...f 30 RS Components diecast aluminium boxes 57 5 miniature toggle switches 56 5 microswitches for Piccolo 57 11 Salford Electrical Instruments, filter crystals for 830 57...... 11 Simmons, Dave, acquisition of Eddystone spares, handbooks etc... 55 , 6 address, phone no. & e-mail 56 19 58 11 cataloguing 57 10 coils 57 26 tuning shaft bushes 60 29 Vintage Wireless Co, vibrator units ...60 4 Strattons advert, 870 .....59 33 wartime production .56 .....*.. 1 Sunspots, effect .57 26 Switches, toggle, miniature 56 5 Surman, Christine EUG gift upon retirement from Eddystone, letter of thanks & photo 55 4 Sutton, Roger see Eddystone *The Radio Amateur', review of 750model (1952) 58 9 Transformers, rewinding 57 1 Transistors geranium (sic) 60 3 OC83, silicon replacement for 56 6 OC171, replaced by BSX29 59 28 Tuning capacitors, cleaning 55 12 Valves ageing 60 4 CV numbers available 56 12 ECC81 stocked by RS Components 55 3 EF50 58 28 KT66R currently manufactured 55 3 6V6GL, repairing 56 4 Voluntary Interceptors, WWII 59 20 Web site see under EUG

•

32 INDEX TO EDDYSTONE MODELS

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All Wave Four advert 65 31 development, description and photo 65 28 photo 65 1 review, Wireless Magazine, 1931 65 32 All World Four reference to Wireless World review 63 14 All World Six see 710 model All World Eight description and photos 64 55 owned by member (Jim Boal) 65 8 R101, military equivalent 64 55 65 16 Stratton &Co, letter from 65 9 Atlantic Two acquired In N.Z. (Bryan Marsh) 61 10 featured model 62 14 photo of 62 1 reception, transatlantic, guaranteed 64 7 Atlantic Short Wave Two 'Eddystone specified'construction project 63 36 Atlantic Three "Eddystone Specified' construction project 64 50 Band Spread All Dry Four 'Eddystone specified' construction project 66 ., 32 EA12 non-standard set 64 5 EB35 acquired at auction, M5POO 66 26 electric shock 66 26 fm, curing lack of 63 52 EB35 Mk III 1982 price 62 6 above incorrect (Bill Cooke) 6 34 EC1O acquisition and recommissioning 63 50 drifting 61 39 63 8 i.f. transformers, query as to substitutes 61 39 Toko units 66 4 replacement effected by member (Jim Duckworth) 66 15 production details 61 39 'repair*, disastrous 62 8 transistors, BSX29 substitute for OC171 61 39 ditto RCA 2N370 64 63 ditto NKT674 and 2N2907, possibility of 64 63 63 8 AFZ11 & AFZ12 substitutes for OC170 63 8 website 63 8 ECR acquired by member 63 51 Brazil, set dicovered and info sought 66 6 EY11 (Yachtsman) acquired at Leicester show 63 13 63 18 'Home brew Eddystone' built by Roger Bebbington 63 1 63 9 Homeland Four advert, Stratton &Co 63 16

22. issue

Kilodyne Four advert, reference to 61 7 photos and acquisition, M5POO 63 34 Orion 5000 brief production history 65 3 Orion 7000 brief production history 65 3 Overseas Four acquired by member, M5P00 (photo - ofset not POO!) 66 27 R101 military version of All World Eight, info required and photo 64 55 Regional One first ever Eddystone, 1924 , 61 6 Scientific Three construction manual, reprint of 64 25 Scientific Four advert, Harrods 64 19 circuit description 64 18 Scientific Five details required 61 11 Short Wave Two constructed by member 64 20 Short Wave Three adjustment and operation 61 4 circuit 61 5 constructors' handbook, reference to 64 17 Two valve vhf transceiver 'Eddystone Specified', not production model 62 38 'Tardis' multl service f.m. transposer system, brief description 61 2 XE 10 vhf transmitter 64 3 Yachtsman (720) featured model 61 21 advert (factory).. 61 l 61 21 In use on yacht 63 18 replica, posibllity of building 66 8 358 advert (Webb's Radio) 61 16 development model found 65 37 l.f.t. repair 64 61 'new'set discovered 66 5 66 10 repairs to 63 14 400 advert (Webb's Radio) 61 16 440/450 Tx/Rx to be recomissioned by member 65 6 640 acquisition and renovation by member 63 7 advice sought re poor performance 61 33 b.f.o. upgrade 66 6 calibration, jump In, curing 65 34 comments on above, G3GGL 61 34 crystal filter switch 62 9 noise limlter valve, EB34 61 11 tracking, curing 66 4 670A electric shock 62 30 67OC rejuvenation of Marconi 2232A badged version 64 47

23 issue page

680 acquired by Simon Robinson 62 36 control knob variations 62 7 64 63 photo and brief description 66 38 wiring, Incorrect, early models 62 9 680X HMS Narvik, seen on 62 31 710 /B version, non-existent 66 8 vibrator, repairto 65 10 Yachtsman developed from 61 21 720 seeYachtsman 730 /la Diplomatic Wireless Service collapsible model 65 12 /4 circuit modification 64 54 differences compared with 730/10 63 35 germanium diodes fitted, query as to 63 6 solid state product detector 62 28 pcb for above modification 63 15 /10 differences compared with 730/4 63 35 newly acquired set 64 53

750 C85 fitted to early models 62 32 mixer valve 61 7 octal plug missing 65 7 twin sets purchased by member 66 6 770M never produced in volume 63 33 770R deafness, use of pre-amp 61 27 drive cord, use of fishing line 61 28 rustling noise, curing 65 37 820 featured model 66 12 performance problems, curing 63 20 photo 66 1 repair and recomlssioning 65 6 valve upgrades 61 7 830 /4 alignment query 64 17 /7 comparison with Kenwood R5000 62 7 multiple faults, curing 66 5 /9 Piccolo filters 65 35 66 28 840A comparison with 840C 64 8 running cooler on llOv .• 61 33 running repairs over 43 years 63 52 840C comparison with 840A 64 8 repairs 65 25 850/4 aerials for use with 61 34 low gain, curing 61 8 issue page

870 elusive fault 66 7 prototype found ? 66 8 870A faultfinding 63 19 In everyday use 62 8 recomissioning 65 17 888 cogwheel repair 63 15 crystal calibrator repair 65 7 output transformer problems ! 61 10 product detector 63 15 recomfssloning 62 31 whistles, curing 61 7 940 faultfinding 62 40 resistor replacement 64 63 valve seating problem 63 35 990R 1982 price 62 6 deafness, use of pre-amp 61 27 Met. Office, acquired by 61 40 publicity at launch 62 34 reception 61 27 repair, muting switch 62 11 Short Wave Magazine review 64 21 1002 bfo - notl 63 13 1004 high noise level 61 ll Marconi Sentinel, Redifon, Hagenuk & ITT variants 61 11 1570 owned by Chris Pettltt. 64 3 1705 vhf/fm broadcast transmitter 62 3 1650 pros and cons, set owned by Michael O'Belrne 61 29 response to above by designer, Roger Sutton 61 31 use with submarines 66 3 1837 /I variant, u.s.b. only 61,...'. 7 common capacitor problem 64 7 notes and faultfinding (Gary Donovan) 62 4 1838 comparison with FRG 100 62 7 6100 brief mention, Chris Pettitt 63 3 6200 brief mention, Chris Pettltt 63 3 GENERAL INDEX

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Advertisements Harrods Scientific Four 64 19 Stratton & Co Ltd All Wave Four ..65.. 31 Homeland Four 63 16 Yachtsman 61 1 61 21 Webb's Radio 358 61 16 Aerials folded dlpole 62 7 low level 62 7 pre-ampsused with vhf/ uhf sets 61 27 twin feeder type 61 6 v.l.f. 61 34 AFN source of signals sought 63 6 Air Tattoo RAF Cottesmore 62 6 BBC Wooferton - see Wooferton BC221 old test gear purchased 62 30 Baker, Richard photo of part of collection 63 3 Bath Tub see Eddystone Boal, Jim a Tale of Two radios 65 8 letter from Stratton & Co 65 9 Book Rapid Radio Repair, Chas Miller 66 22 Bowman military project scrapped 62 6 Brainpower 14 watts 61 7 British Arctic Air Route Expedition All Wave Four, used by 65 31 Broadcast bands extended medium wave in South & Central America 61 7 Capacitors see Condensers Cartoon German Sigs Corps 64 60 Chain Home mast demolished 63 6 Components minimum number insets 66 9 Computer noise See QRM Condensers problems with NOS 64 62 63 19 Cox, Harold Yachtsman model 61 21 DAB comments on 63 50 64 9 64 62 66 3

2.6 issue page

Eddystone HOv, cooler running 61 33 AC/DC sets, cautionary tale 62 30 62 36 Bath Tub demolition of 65 16 echoes from , 63 40 reflections from 64 n bump testing receivers 64 56 cabin or communications receiver? 63 18 cases, repainting 64 14 cases, receivers stuck in 63 12 colls, low loss 66 8 company represented at IBC Convention and Trade Show 63 3 crystal calibrator, fault and repair 65 7 diecast boxes - see Hammond Manufacturing electric shock, from solid state psu 66 26 handbooks and manuals 66 2 history of, wartime 61 14 history of, New Electronics magazine 65 26 66 20 History of Receiver Development '65- '95, by Roger Sutton 62 19 63 43 Mains Filter cat. no. 732 , 62 36 Panadaptor, decommissioning EP17R 65 40 prices, new (1982) ....62 6 above prices incorrect 63 4 prices, secondhand (1983) 62 6 prices of models boughtby member 63 5 product detector - see Product detector publicity at launch of 990 62 34 Quick Reference Guide 62 10 correction re 1001 model 63 13 prices incorrect 63 4 receiver, first ever 61 6 restoration - see Restoration sets that never were 63 33 spares - see Spares valves, chart of, used in Eddystones 65 20 vhf transceivers 62 12 W8XK used for testing 61 26 Eddystone Lighthouse history of 66 28 model available 61 35 Eddystone locomotive Bulleid Pacific, history of 64 10 comment on, Peter Lankshear 65 37 ditto, Ted Moore 66 9 Eddystone Lighthouse stamps fromNZ 65 5 Edwards,Arthur Yachtsman 720 model 61 21 EUG members, list of, query as to 65 14 66 22 members, oldest 61 26 62 9 63 15 letters seen on van (Ted Moore) 63 5 Lighthouse, delivery times 66 25 M5 callsigns held by members 61 28 Newsletters on CD-ROM (David Oakden) 63 12 64 3 64 4 66 25 officers, election of (not!) 62 5 Quick Reference Guide - see under Eddystone 7 issue page

EUG cont'd 80 metre net 64 16 65 14 66 ;...23

G3GGL see Wormald, Graeme G6SL use of Eddystone callslgn ? 61 2 G6X3 see Edwards, Arthur Hammond Manufacturing dlecast boxes 61 12 original tooling sought by mfr 66 28 postage, help with 62 10 Harrods Atlantic Two in 1928/9 catalogue 61 10 Headphones use of HIFi type - not! 66 10 Hewlett Packard death of founder 65 4 Instance, John artist, ex Eddystone 62 12 63 40 Kenwood R5000 comparison with 830/7 62 7 Kiwi Column - see Paton, Ross Lankshear, Peter Quartz Hill reminiscences 64 41 66 37 Bulleid 65 37 Lasers used in inter galactic communications (possibly!) 65 4 Loudspeakers see Spares M5 callsigns held by EUGers 61 28 M5P00, licence issued (finally) 61 35 McGowan, Jim display of Eddystones at Havering &DARS 64 59 Marconi house magazines 62 12 62 33 HR100, 750 equivalent, twins discovered 66 6 MIMCO badge, drawing of 64 49 Sentinel, equivalent to 1004 61 11 2232A, 670C equivalent 64 47 Marthinsen, Tor 'Eddystone Specified' article, Atlantic SW Two 63 36 valveguide 65 18 reference to above 65 4 Megahertz Communications represented at IBC Convention and Trade Show, Amsterdam 63 3

22 issue

Merlin see Wooferton MIMCO see Marconi NDBs alive and well 64 8 Narvik, HMS 680X on board 62 31 National Association of Broadcasters Las Vegas convention 66 3 New Electronics magazine Profile of Eddystone 65 26 66 20 Nicotine removal - see Restoration Oakden, David Newsletters on CD-ROM - see under BUG Panadaptor EP17R, recomissloning 65 40 Paton, Ross comment on components 61 10 Kiwi Column 64 61 66 35 Phoenix suppliers to Eddystone 64 3 Planning appeal for mast Chris Pettitt, won by & advice on 64 23 Power Supply Type 427 Stratton&Co 63 51 Practical Wireless articles by F.G. Rayer 64 61 Product detector modifications for models without 63 15 reception without 65 39 QRG see under Eddystone Quartz Hill reminiscences of, Peter Lankshear 64 14 66 ; 37 QRM aerial, caused by 64 43 computer noise 62 18 static rain 61 8 R1224 receiver query regarding 66 9 Radio Bygones back numbers and subscription details 65 216 Radio stations shortwave, 1928, list of 64 39 Rapid Radio Repair book by Chas Miller 66 22 Rayer, Francis G. articles in Practical Wireless.... 64 61 Receiver Kits available Kltmaster 62 30 Receiving Technique copy of SWM article 63 17 Resistors Problems with NOS 64 63

issue page

Restoration, repairs & modifications b.f.o. modification 66 6 book, Rapid Radio Repair, Chas Miller 66 22 cases, repainting 64 14 cases, receivers stuck in 63 12 cautionary tale, EC10 62 8 crystal calibrator, fault and repair 65 7 i.f. transformers, Toko, for EC10, EB35/36/37 66 4 66 23 meths, use of- not 1 61 7 nicotine, removal of 61 37 paint, black crackle 66 27 potentiometer problem cured 66 5 restoration guidelines 61 36 rustling noise, curing 65 37 screen dropper resistors, frequent fault 64 15 solid state product detector 61 28 tracking ...66, 4 transistor substitutes - see under EC10 in model index tuning cog repair 63 15 valves, cleaning of 65 25 Resistors screen dropper, 100k, frequent fault 64 15 RNU stamps collected 62 9 SSB reception without product detector 65 39 Signals at Sea claim to first 63 6 Short Wave Broadcast stations reduction in services 66 24 Short Wave magazine 990R review 64 21 Receiving Technique (reprint of article) 63 17 Spares cogs, tuning 63 2 63 15 66 24 dlecast feet and loudspeakers, in demand 61 10 loudspeakers, round, casting of by member 65 38 health precautions re above 66 8 diodes to replace valves (not!) 61 10 handbooks and manuals 66 2 i.f. transformers, Toko, EC10, EB35/36/37 66 4 manufacture of parts, query as to (Roger Bebbington) 61 8 manufactured spares, comments on 62 13 paint, black crackle 66 27 Simmonds, Dave - Eddystone parts supplier 65 2 66 2 solid state vibrators 61 6 switch levers, chrome 63 50 64 14 transformer rewinds 62 30 transistor substitutes - seeunder EC10 in model index So issue page

Stratum & Co Ltd advert, Yachtsman 61 1 condenser type 339 61 26 Power Supply Type 427 , 63 51 Sutton, Roger History of Receiver Development 1965 - 1995 62 19 Managing Engineer at Eddystone 62 10 Swiss Radio International reduction in services 66 24 Transformer rewinds Majestic Transformer Co 62 30 Valves cleaning of to recommission 65 25 metal valve in lieu of 6V6 - dangerll 63 7 numbering system 65 18 chart of Eddystone valves 65 20 comments on, Ross Paton 66 35 tracking 66 4 66 36 Vintage Communications Fair report onEddystones for sale (September 2000) 63 12 Websites EC10 63 8 Simon Robinson, M5POO 65 35 Wireless Magazine All World Four, review of (mention only) 63 14 Wireless Set 18 as worn (and drowned!) by Jim Boal 65 8 World Radio Conference, 2003 amateur band allocations 62 11 World Space receivers 66 3 using, G3GGL 66 11 Wooferton visit to BBC transmitters by EUGers 62 25 Wormald, Graeme BBC experiences 61 20 Zeppelins being built again 61 10 use of spark transmitter 61 10

31 Lighthouse Index, Issues 67-72

INDEX TO EDDYSTONE MODELS

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31A used in recent comparison tests 71 40 40A modifications enabling ssb usage 67 9 scale plate photocopy 67 3 358 comparison with 400 71 16 restoration notes 71 11 Royal Navy, in use with 71 44 214/215 advert, Stratton &Co 70 49 development of early vhf equipment 70 48 358X mystery RAF photo 70 53 400 comparison with 358 71 16 i.f. frequency 72 15 400B analysis of (Peter Lankshear) 71 37 comments on, Pat Hawker, G3VA 72 47 description 71 36 504 advert, factory 67 24 introduced in 1946 68. 4 640 acquisition and restoration, Brian Cauthery 70 32 ditto, TedMoore 72 10 heat reduction 72 19 i.f. breakthrough 67 10 revalving 67 7 valve and resistor failure 70 16 659 brief notes 67 7 670A magic eye restored to life 72 14 680 reviewsubmitted by G0OGN 67 21 test report, Wireless World 1949 67 22 680X acquisition and repair by Graeme Wormald 70 54 700 built for Boardroom by Stan Carney 70 30 710 communal listening model 68 4 730/1 a restoration of Diplomatic Wireless Service model, Roger Bebbington 70 4

n Lighthouse Index, Issues 67-72

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730/4 co-ax connectors available 70 43 shock resistant mounts 67 30 740 unused ex Civil Defence model saved from skip 72 12 750 i.f. frequency explained, Graeme Wormald 72 42 restoration, Roger Bebbington 72 42 770R II in daily use 71 14 820 cased version 67 5 condenser omitted from circuit 67 5 transformer failure 72 16 830 fingerplates available 72 2 830/4 renovation, Joel Balogh 70 23 830/5 frequency jumps, curing 70 20 830/9 servicing and bandwidth conversion (Jim Duckworth) 67 37 840A query as to i.f. transformers 70 20 rustling cured 72 17 840C magic eye, problems resolved 67 4 renovation, Graeme Wormald 70 22

870 deafness, possible causes 67 10 870A acquired by Ted Moore 70 17 isolation transformer installed 71 13 880 local oscillator comments 71 8 888 avc problems 67 6 900 c.w. transmitter, mobile, prototype 67 12 940 alignment using sweep generator 72 35 comparison with Realistic DX394 70 17 deafness cured 72 13 history of one receiver, Peter Lankshear 70 6 restoration by Ted Moore 71 12 repair notes, by Roger Bebbington 68 39 940HF model discovered by Ted Moore 71 11 958 faults, suggestions as to curing 67 31

in Lighthouse Index, Issues 67-72

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958/7E featured model 67 17 1002 restoration, Ted Moore 70 37 tuning problems 70 18 1610 brief description 71 34 1650 converting ex-GCHQ models (Geoff Steadman) 72 6 1806/2 handset amplifier, query as to 67 2 All World Six -see 710 All World Eight speaker 67 31 Amateur Bands Two full description and circuit ('Eddystone Specified') 68 16 description 71 42 review 68. 17 Atlantic Two not the first Eddystone receiver ? 71 24 EA12 AVC problems 67 32 repairs, Ted Moore 71 13 EB35 different circuitry as compared with Mk III 67 21 HRH Prince Charles, fitted to car 67 21 modifications corrected 72 16 silicon devices to replace germanium transistors 68 35 Toko i.f. coils as substitutes 68 34 EB35 Mk III acquired & got working 67 6 different circuitry as compared with Mk II 67 21 negative earth, warning as to 68 26 EB37 restoration, by Chris Morgan 68 35 silicon devices to replace germanium transistors 68 35 Toko i.f. coils as substitutes 68 34 EC10 Mimco 6689 equivalent 71 14 modifications corrected 72 16 modifications, Tom Toth 72 44 output transformer replaced 70 14 substitute IFTs, care as to 67 8 silicon devices to replace germanium transistors 68 35 Toko i.f. coils as substitutes 68 34 EC10A different i.f. frequencies 67 8 Eddystone 3 Valve Receiver first Eddystone receiver ? 71 24 advert 71 26

IV Lighthouse Index, Issues 67-72

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IMR54 advert, IMRC 70 31 story of, and R.M.S. Queen Mary 70 28 Statesman - see EB35 Mk III Super Six description and restoration 71 15 Twin acquired by Simon Robinson, description & photos 70 50 Two data sheetfound, 1926 model 70 11 XE10 brief description 68 3 XE15 stereo exciter 68 3

PLEASE TURN OVER FOR GENERAL INDEX

By carefully prising the staples on the next page you may remove this index to keep with the relevant issues. Lighthouse Index, Issues 67-72

GENERAL INDEX

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Advertisements factory 680 67 24 aerials, 1938 72 26 Improved Dual Speed Dial 72 41 inductance units 71 43 IMRC, IMR 54 (Queen Mary) model 70 31 Slinky aerial 72...... 34 Stratton & Co, 214/215 vhf models 70 49 Aerial active, Eddystone model LP3382 71 41 active, article by Peter Lankshear 72 28 cartoon (Heath Robinson) 68 21

co-ax problems with use 69 13 aerial feeders, article, Peter Lankshear 72 22 computer noise, query as to elimination of (Jack Read) 71 35 Doublet 72 15 erection of, highwire (Brian Cauthery) 68 29 ex Army, Land Rover etc 72 35 interference, designed to overcome 72 25 72 35 links on back of Eddystones 67 6 longwire 72 12 loop, random 69 49 Slinky, advert for 72 34 Slinky used 70 16 71 8 untuned loops 69 9 AFN vhf frequency 72 13 Alignment device instructions for building 68 38 BBC The Secret WarV videos available 70 42 BBC World Service problems with 648 k/cs transmitter 70 15 Broadcasting cessation of a.m. ? 69 14 Cartoon Heath Robinson 68 21 Pile-Up 68 10 Cleaning - see Repairs

VI Lighthouse Index, Issues 67-72

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Composite Signals Organisation Chris Pettitt employed by 70 3 Condensers electrolytic, reforming 68 24 69 19 tolerances, new 72 10 Denarius history of coin 68 28 Eddystone active aerial LP3382 71 41 advertisements - see Advertisements aerial links, on back of Eddystones 67 6 agent in Aden 68 36 build sheets available, certain models 68 29 colour code, used by Eddystone 71 19 components for ultra short wave 71 33 commencement of company, musings upon, Peter Carney 72 30 design faults ? Resistor problems, Jack Read 70 52 early sets, analysis of (Tor Marthinsen) 71 20 ex employees Harris, Bernard - My First Job 69 51 Starri, Ernesto 71 3 factory closure 72 3 factory punched cards, transferring to CDs, query as to 67 30 first receiver ? 71 24 72 30 Full Vision Dial 72 40 garden party, ex employees 67 3 69 4 inductance units 71 43 lighthouse on penny coins 68 28 69 12 locomotive 69 9 Panadaptors- see Panadaptors Profile of Company, 1969 68 18 pressure drive speaker 68 4

Eddystone repairs, by Peter Lankshear Parti 68 12 Part 2 69 33 Part 3 70 44 Part 4 71 17 radios for sale, Loot 68 25 repairs - see Repairs servicing - see Repairs SBS taking over Eddystone name 72 3 vibrator pack S.687 70 40 Eddystone Light on N.Z. stamps 72 4

vn Lighthouse Index, Issues 67-72

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Eddystone Specified (kits & circuits) Amateur Bands Two 68 16 One Valve Superhet Short Wave Convertor 72 36 72 39 Transmitter 67 13 Two Valve Short-Wave Receiver 70 38 ERA Microreader on loan to Ted Moore 70 21 EUG annual accounts 67 9 badge available 68 35 crossword 67 11 68 23 69 41 70 27 71 23 72 21 index to newsletters 61 -66 69 21 officers (not!) 67 4 Lighthouse on CDs 68 27 70 .56 members collecting sets 68 11 members' QSL cards 70 40 72 33 members' survey 67 20 membsers' survey results 68 5 Firmin & Sons taking over Strattons 68 8 G6SL free licence (due to Chris Pettitt's great age !) 67 3 excuses for anniversary call-sign 70 43 special event station 72 48 G7DOG station worked April 1st 72 5 GrundiRF420GB circuit sought 71 7 Headphones use of older type better 71 4 Heathkit DX40 transmitter 67 20 Hitachi World Space receiver acquired by Chris Pettitt 68 3 HM King George V broadcast to the world, 1930 68 32 HRH Prince Charles EB35 fitted to car 67 21 HRO query as to heater voltage 67 10

Vlll Lighthouse Index, Issues 67-72

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IF sweep generator project by Joe LeKostaj, K9LY 71 28 being built by Graeme Wormald 71 33 built by Graeme Wormald 72 34 Imhofs Eddystone retailers 68 25 Interference computer generated 69 9 71 35 overcoming 72 25 72 35 Laughton, Stratton recording for BBC Home Service 70 8 Long wave changes in broadcast stations 71 32 Loudspeakers 899 speaker found at boot sale 72 14 round speakerfound in skip 70 19 Loot Eddystones for sale 68 25 Marconi share prices, comment 68 3 wireless stations in Wales, book 71 34 £2c6in68 27 Maplin chassis available 71 9 Medium Wave Circle membership details 72 30 Megahertz Communications in receivership 72 3 Mimco 6689 EC10 Mk II equivalent 71 14 Moore, Coleen responsible for Eddystone radios ? 72 32 Morse Test abandoning 12 w.p.m 69 49 Neild, Dr. P.N. dec'd links with Eddystone 69 50 NVCF report on(May 2001) 67 28 One ValveReceiver built by Ron Pearce 70 42

Panadaptors 1161 67 8 EP17R restored 72 17 QRM - see Interference QRN - see Interference

IX Lighthouse Index, Issues 67-72

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QSL cards EUG members' cards 70 40 72. 33 Quartz Hill amateur operation, ZL6QH 68 26 R208 Sputnik Special 67 3 Radio Authority pocket book available 69 50 Radio Row Cortland Street, N.Y 69 19 Realistic DX394 comparison with 940 70 17 in use, Ted Moore 71 7 Repairs alignmentdevice 68 38 carbon tracking 67 5 67 10 case refinishing 68 26 cleaning Electrolube cleaner 67 9 switch cleaner 67...... 5 colour code, used by Eddystone 71 19 Eddystone repairs, by Peter Lankshear Parti 68 12 Part 2 69 33 Part 3 70 44 Part 4 71 17 heat reduction (640) 72 19 local oscillator alignment 70 10 output transformers, use of modern type 70 20 resistor problems, Jack Read 70 52 rustling 72 16 servicing, comments on 70 9 soldered joints, old 69 10 sweep generator, using 72 34 switch cleaner 67 5 Royal Navy Eddystonesin use 71 44 SBS taking over Eddystone name 72 3 Said O. Bazara & Bros Eddystone agents, Aden 68 ...36 Screws cautionary tale re metric 67 8 72 12 BA sizes explained 67 27 BA sizes available 70 19 Selectivity improving via IFTs 71 9 Lighthouse Index, Issues 67-72

issue page Servicing see Repairs Severn Valley Railway forties weekend 69 16 Spares 504 scale plate photocopy 67 4 830 fingerplates 72 2 co-ax connectors, PYE type available (for 730) 70 43 decal transfers 71 34 gear teeth 72 41 IF transformers, alert as to 67 8 manuals and spares, Dave Simmons 72 2 screws, BA sizes available 70 19 silicon devices to replace germanium transistors 68 35 Tokoi.f.t's 68 35 tuning gears 68 27 valves- see valves Starri, Ernesto ex Eddystone employee 71 3 Stratton & Co advert for 214/215 vhf models 70 49 advert for 680 67 24 cessation of domestic wireless production 68 32 recording by Stratton Laughton for BBC Home Service 70 8 taken overby Firmin & Sons 68 8 vibrator pack 71 10 Sweep Generator - see IF sweep generator Toth, Tom personal reminiscences 71 4 72 44 Eddystone profile 68 18 Transformers mains voltage.... 72 18 TRF receiver project by Peter Lankshear (N.Z.) 67 33 Valves metal, comments and list 70 18 6V6, glass type to replace metal 69 10 EF50 72 15 EF91, inadvertent substitute for 6AT6 69 11 Vibrator Pack S687 70 40 Webb's Radio marketing 710/1 68 4 Wireless for the Warrior Vol. 3, Reception Sets, by Loius Meulstee 70 41 Wireless World review of 680 67 22 World Trade Center radio engineers lost 70 39 World War II Eddystones used by R.N 71.... 44

XI T

Lighthouse Index Issues 73-78

INDEX TO EDDYSTONE MODELS

issue page

358 advert, Webbs Radio (1942) 73 20 400 Home office MF network 73 29 Wireless World, write-up in (S400) 74 12 400B comments on usage of, Pat Hawker 73 22 ditto, Graeme Wormald : 73 23 . query as to Air Sea Rescue use .- 73 Q 440/450 D Day, used in invasion , 73 :.. 25 , Lancashire Police, used by ..77 i... 8 S147, Admiralty nomenclature for 440/450 76 15 504 story of one receiver, Peter le Quesne : 74 4 556 fuse, lack of 78 14 mains transformer replacement ...78 14 pot. replacement 78 14 second receiver found (Ted Moore) 78 ,16 640 advert, 1948 (Webb's Radio) 76 55 BFO improvement 74 19 prices, new 75 9 repairs to 75 10 rf stage, cascade conversion 76 18 •• 6V6 valve 74 10 670 condenser, leaky 73 9 testimonial 75 15 670A frequency coverage compared with Marconi variants 76 16 heater chain problem 74 15 low gain cured 74 10 670C acquired by Graeme Wormald (at last!) 76 6 acquired by TedMoore 75 7 « iidio fault cured, Graeme Wormald :..77 11 Utultononeband 74 20 680 advert, Stratton &Co Ltd (1949) 77 6 drift cured 74 15 owned from new, Jim Daniels (NZ) ; 77 5 680X aerial fault cured, Graeme Wormald 77 11 77 31 hum, curing 73 10 740 fault, factory, cured 76 7 hum, curing 74 17 in use many years 74 15 Lighthouse Index Issues 73-78

750 hum, curing 76 17 770CE vlf to uhf receive unit , 76, 17 770R aerial links 74 34 BBC, used by i ! 75 11 Cumbrian News Group, used by 77 19 performance, improving 78 12 repairs to Mk II : , 75 6 rustling cured 74 9 770U coil contact problem, 770U (Brian Cauthery) 77 40 hardwired mains, NZ 78 6 820 dry joint 73 8 valve problem cured ...: 741 16 830 calibrator switch, changing to toggle 77 26 78 5 fault cured, Brian Cauthery 76 22 ditto, Graeme Worm'ald 77 10 HT, lack of, curing..., '. 76 17 knobs, mismatching 73 11 restoration ...Chris Morgan 77 28 JoeLeKostaj 78 19 sales brochure reprint 77 .....21 14 model, query as to Canadian usage 78 21 840 / BFO, intermittent, curing /. 74 18 description I 75 15 840C acquired by Ted Moore .' 75 8 refurbishing (Peter Beardsmore) 74 28 870 scale reversed on these models 75 10 870A receiving ssb signals 74 11 rejuvenated by Ted Moore : 76 11 880 acquired by Ted Moore, with picture.... 76 9 product detector fault 76 16 888 crystal calibrator repair 73 10 tuning ; 74 16 fuse blowing, cured 74 18 930/1 acquired by Simon Robinson 76 44 940 advert (Webb's Radio, 1962) 78 24 cascode problems resolved 78 42 coil former fault found 73 4 improvements suggested (G8POO) 75 40 comments on foregoing improvements G8POO 78 24 Peter Lankshear 76 32 RossPaton 78 6 instability problems 77 42 Lighthouse Index Issues 73-78

940 (contd.) in-depth article with graphs (Graeme Wormald) 78 27 comments on, Terry Parker (Eddystone Chief of Test).....1 78 34 ranges not working 77 14 resistor fault : 74 14 taken to school (Ted Moore) 74 8 958 bulbs, query as to voltage 77 20 990R , , picture on index 75 centre 1002 front panel replacement 77 14 1990R/2 acquired by Ted Moore, with picture 76... 1Q fault, cutting out, curing 76 14 6200 available at discount 73 24 EB35 audio hiss, curing '. ...77 3? bulbs, query gs to voltage 77 20 noise, output stage 76...... 16 1 power supply, mains, noisy ...76 .....16 restored to life '....'...... 75...:.....' 9 EB35Mkll audio hiss, curing 77 33 restored to life 75 .5 EB36 acquired by Ted Moore 75 5 audio hiss, curing , .77 33 noisy set cured ...74 '9 EB36A differences between this & EB36 75 38 EC10 audio hiss, curing : 77 33 bulbs, query as to voltage 77 20 ... circuit diagram errata : 74 8 cutting out, curing 76 15 Isle of Arran, in use on 78 16 noise, output stage 76 16 power supply, mains, noisy 76 16 printed circuit board repairs 76 13 transistor faults 73 6 transistor upgrades to modern types 73 6 wrong psu supplied 73 5 EC10 Diplomat brief details ! 75 29 ECR acquired by Ted Moore 77 12 Everyman copy brochure 78 8 All Wave Four well travelled, in use many years (Amy O'Neil) 75 22 All World Two adapting for 10 metres 76 13 Atlantic Three details of 78 33 Everyman comments by Tor Marthinsen 77 36

IV Lighthouse Index Issues 73-78

IMR54 pictures of, shipboard 78 40

Kilodyne Four advert, Stratton & Co Ltd, 1931 74.,.. 24 full description, Wireless Magazine 1932 : 74 25 comments by Tor Marthinsen i 77 36 Orion in use on EUG net..... 73 24 spares, query as to (Simon Robinson) , .....78 25 transceiver available at discount 73 24 Quadradyne comments by Tor Marthinsen 77 36 R101 military set, full description of, & circuit 74 36 Scientific Four full description, circuit,, pictures • 76 i 25 comments by Tor Marthinsen 77 36 Scientific Three details of 78 32 Sphinx comments by Tor Marthinsen 77 36 Three description of 78 32 S147 440/450 equivalent, used by R.N 76 15 WS57 440/450 equivalent, used by Army 77 1 9 Lighthouse Index Issues 73-78

GENERAL INDEX

Admiralty Station site of oldstation BYE found 74 12 Advertisements 358 (Webb's Radio, 1942) 73 20 504 (Arnold & Wright Ltd, [NZ]) 74 7 640 (Webb's Radio, 1948) 76 55 680 (Stratton & Co Ltd, 1949) 77 6 ' 1 940 (Webb's Radio, 1962) .' 78 .24 • Eddystone Radio products (1945) 73 21 Everyman (Stratton &Co Ltd, 1940) 78 11 ♦ Five & Ten Metre Converter (Webb's Radio) 76 ....'.55 Kilodyne Four (Stratton &CoLtd, 1931) 74 •. 24 Shortwave Four (Eddystone specified) 73 33 Aerials army references 75 30 Eddystone, active, LP3382 75 25 log periodic, home built, successful on vhf (Ted Moore) 78 18 loops, low 75 30 pre-amp, simple, description 78 15 the simpler the better ? 74...'...... 13 The V-Doublet' 73 30 vhf 75 13 Aerial tuner construction project 75 11 Ainslie, Alan Eddystone / Marconi factory collection, acquisition of 76 3 Amateur radio Forum, cbmments on h.f. spectrum 78 7 new licensees 75 30 60 metre band 75 30 AR88 used by Y Intercept Service 73 3 AVO meter comparison : 74 16 BBC Connections with Eddystone, early days 73 3 770R, use of 75 11 Beaumanor Park - see Y Intercept Service Bush DAC10 repaired 75 4 Campbell Island Eddystones used in Antarctic 76 36 Camper & Nicholson R7020 receiver 75 29 Capacitors - see condensers Carney, Stan - see Eddystone, Bath Tub

CHiDE (Centre for the Historyof Defence Electronics) confirming use of Eddystones at D Day 73 25 membership details 75 32 Cleaning - see Repairs

VI . Lighthouse Index Issues 73-78

Co-ax continuity checks.. 75 13 Command Receivers bought & sought by Ted Moore 77...; 18 Condensers full description of types (Peter Lankshear) 73 __ 13 Cumbrian News Group used770R '. 77 19 Daniels, Jim (NZ) owned 680 from new! 77 5 Eddystone AC/DC sets, safety considerations 74 17 advertisements- see Advertisements aerial, active, LP3382 '. 75 25 aerial links ...: ..:i^ 73 10 74 34 77..^ 31 agents (historic) Arnold & Wright Ltd 74 7 Said Ahmed O. Bazara & Bros 75 15 Webb's Radio 76 55 1 73 20 ,, '. 78 24 Bath Tub memories from, Stan Carney 75 33 swimming at, G4ALG 77 38 callsigns, used by factory 75 37 collection disposal of private collections, thought, food for 76 39 factory, story of J. 76 3 connections with Eddystone, early/days 73 3 condition of sets!, suggested grading system 73 42 diecast boxes found '. ' 73 12 sought by Hammonds (mfrs) 74 20 logo, owned by Hammonds 75 31 disposal of ".'. 76 39 earthing, 2 terminal connector models 77 32 factory, relocating to Midlands 75 3 ; 77 3 final models available at discount : 73 24 Five & Ten Metre Convertor 76 54 Eddystone Tours', descriptions (Tor Marthinsen) 76 23 77 36 Eddystone Threes', descriptions (Tor Marthinsen) 78 32 fuses? main, types to use 73 7 garden party, ex-employees 74 3 LEDs, substitutes for bulbs, EB/EC series 73 12 loudspeakers, round, making replicas 76 16 Mount Everest Expedition, 1936, Eddystone equipment used 76 48 museum & archives 75 3 prices, current NZ examples 73 28 internet 74 42 prices, historic Everyman .78 9 640 75 9

VII Lighthouse Index Issues73-78

Eddystone (Contd.)

680 77 6 Quick Reference Guide - see QRG reminiscences, the late Geoff Woodburn 74 21 . S-Meter Model 669 75 10 slide rule dial, query a& to first model 74 : 14 , 75 31 spares- seeSpares suffixes to model numbers, query as to 76 16 Eddystone Light lighthouse on stamps. 73 28 pennies, appears on (1944) . . 74 13 used by'NZ insurance co ! 73 '. 28 ' •World War II, during •. ' 78 6 . Eddystone Specified (kits & circuits) Shortwave Fdur, 1945 73 33 EUG car windscreen sticker ....• 76 , i 45 76 '. 56 computer replacement fund '. 78 3 EUG 1 numberplate available 78 26 EUG initials, other applications of 78 26 'Lighthouse1 newsletter - see 'Lighthouse' Orion in use on net 73 24 Quick Reference Guide - see QRG . Sabrina Drive (HQ!), origins of name 78...' 7 Silent Keys Fred Ward, G2CW 77 33 Tony Besford, G3NHU 77 33 George Poppleton 77 33 80 metre net : 77 33 Foundation Licence new licences issued 73 26 ..' 76 57 G6SL origin of callsign 73 24 usedatVHFNFD 74 3 74 34 Hallicrafters SX28 used by Y Intercept Service • 73 3 Hawker, Pat (G3VA) comments on 400B 73 22 Headphones using modern type, mods, to enable 74 19 Heater regeneration cathode ray tubes 73 8 Home Office MF Network using Eddystone 400 model 73 29 HRO used by Y Intercept Service 73 3 Interference success in overcoming (Jack Read) 73 32 74 22 television time-base 75 13 white noise, queryas to 74 35 response 75 14

VIM Lighthouse Index Issues 73-78

Interference (contd.). strong, multiples of 9 mHz, query as to 77 18 Internet Eddystones to be found 78.... 40 Lancashire Police radio use of Eddystone equipment 77 8 Lankshear, Peter personal profile v 25 23 comments on 940'improvements'.1 76 32 diodes, silicon, use as valve substitutes (discussion) 78 37 see also under repairs Laughton, Stratton photo & note re G6SL 73 25 patent, double ended-valve holder 77 44 Le Quesne, Peter story of 504 74 4 Eddystones on Campbell Island 76 36 'Lighthouse' index, issues 67-72..i..- 75....' centre production problems 75 28 Marconi archives, fateof (?) 76 57 frequency coverage of 670 equivalents 76 16 HR20, 820 tuner equivalent 73 11 Marthinsen, Tor Eddystone 'Fours', descriptions of 76 23' 77 36 Eddystone Threes', description of 78 32 comments on QRG 76 ,.46 Mauritron Technical Services handbooks & circuits available (also on CD, Eddystone & others) 78 5 McMichael Colonial Supersonic Receive^ infosqught 74 10 Moore, Ted contact details : 78 16 photo of shack ; 78 14 Morgan, Chris restoration of 830/3...v 77 28 Morse code as learnt by Graeme Wormald 73 26 Mount Everest Expedition, 1936 Eddystone equipment used 76 48 NVCF report on (May 2002) 73 38 NZART query as to Eddystone company 77 5 O'Neil, Amy owned All Wave Four for many years 75 22

Panadaptors connectors for use with 770 77 32 PYE 1101A acquired by Ted Moore 75 8 QRG updated edition 73 28 in praise of 74 3 74 9 errata & improvements 74 42 75 29

IX Lighthouse Index Issues 73-78

QRG (continued)

Tor Marthinsen 76 46 QRM - see Interference QRN - see Interference Radio waves using frog to detect, 1916 ' 73 40 RAF Kinloss frequency used 77. 13 Repairs aerial fault, 680X 77 10 77 31 audio fault, 670C 77 11 audio hiss, curing (EB / EC models) '. 77 33 BFO, intermittent, curing (840) 74 ..18 ' 1 Centre Electronics : .' 75 12 • cleaning in dishwasher 73 .'43 using WD40 77 '.18 coil contact-problem, 770U....- 77 , •. .40 condenser, leaky, 670 73 9 connectors, AC/DC sets 77 ..39 crystal calibrator 888 73 10 switch, changing to toggle (830/7) 77 26 tuning 74... 16 cutting out, curing (1990R, EC10) 76 15 diodes, silicon, use as valve substitutes (discussion) 78 ,.37 Eddystone ReceiverRepairs for Beginners (Peter Lankshear) Part 4 .,..,... 73...... 13 Part 5 (resistors) •. 74 31 Part 6 (valves) 75 18 fuse blowing, cured : 74 18 " frequency drift (Terry Parker) 78 34 general notes on repairs (Joe LeKostaj) 78 19 ht fault, 830 76 17 hum, curing, 680X 73 10 ditto, 740 74 17 ditto, 750 : 76 17 front panel replacement (1002) 77 14 major 75 12 output stage, noise (EB/EC models) 76 16 paint, crackle finish, available • 76 56 paraffin, use of for cleaning - not! 73 11 power supply, mains, noisy (EB/EC models) 76 16 printed circuit board repairs , 76 13 radio hospital, John Gillespie, Ontario 75 31 ranges not working (940) 77 14 rectifier valves, conversion to solid state with diodes 77 17 Repairs (cont'd) restore or not ? brief comments (Ted Moore) 78 16 transformer, mains (504, 640, 740) 77 13 transistors use of modern types in EB/EC models 73 6 whisker problem with AF127s 74 14 75 5 3N128, substitutes for 77 17 U.S. repairer in San Diego, ex Marconi engineer 73 27 valves - see Valves Lighthouse Index Issues 73-78

Repais (continued)

waveband, loss of reception on one (670C) 74 20

Resistors types described & checking 74 31 100k gone high 74 14

Restore or leave alone ? brief comments (Ted Moore) 78 16 Servicing see Repairs SPAM Society for thePreservation of Amplitude Modulation '. 77 7 Spares capacitors :iw.i 73 17 connectors, Belling Lee 77 32 connectors, AC/DC sets 77 ...1 39 circuits & manuals Mauritron 78 5 Simmons, Dave 78 2 lamps festoon ! 74 20 Lilliput, query .as to voltage (EB35, EC10, EC958) 77 20 LEDs, substitutes for bulbs, EB/EC series 73 12- loudspeakers, round, making replicas 76 16 miscellaneous Eddystone (Dave Simmons) 76 59 paint, crackle finish, available 76 56 service manuals (Dave Simmons) 76 ..59 transformers, mains, possibility of manufacturing 78 17 transistors, use of modern types.../. 73 6 tuning mechanism cogs (slide-rule/dials) 77 2 SSB receptioh using signal generator 74 11 Stella poor tracking cured 75 4 Stratton & Co patent application, first radio related 76 19 patent, double ended valve holder 77 44 Sweep generator (K9LY) successfully built and used : 73 25 Transformers, mains preventing burn-out ? 75 10 77 13 Valves ageing, comments on 76 12 BBC valves 75..... 11 cascode catastrophe when used athf 78 42 cold-cathode rectifiers 76 12 diodes, silicon, use as valve substitutes (discussion) 78 37 Valves (cont'd) holder, patent application, Stratton Laughton 77 44 milky, sign of lost vacuum 76 9 rectifiers, conversion to solid state 77 17 EB34 checks 75 10 6BA6, vacuum lost 76 9 6V6 fault 74 10 solid statesubstitute 78 5

XI Lighthouse Index Issues 73-78

Voluntary Interceptors receivers used by ; 73 3 Webb's Radio advert, 358(1942) 73 20 history, brief 76 54

Wireless for the Warrior WS57 77 : 9 Wireless World article on S400 74 .13

Woodburn, Geoff (late) ex employee ...74 12 reminiscences 74 21 World Wide Web -see Internet Y Intercept Service receivers used, Beaumanor Park 73 3

XII LighthouseIndex Issues 79-84

Lighthouse index

GENERAL INDEX

issue page

Aarhus Letter from (Clemens Ostergaard re 880) 82 19 Active antenna Design for, Peter Lankshear 79 11 Advertisements AIIWoridTwo 79 27 Bandspread tuner 82 24 Homeland Four 83 25 KilodyneFour 82 32 Q-Max chassis cutter 83 23 transmitter 84 40 Scientific Two (Wireless Magazine) 80 12 710 (Arabic, Baghdad Weekly Advertiser) 79 43 888A 84 27 Aerials Active - see Active antenna Dipole, low, giving near - vertical incidence 81 27 Doublet, described in Marconi manual 79 32 HF loop used for airbands 79 16 Koomans 82 22 Link, importance of (840A) 79 12 Log periodic 79 13 Loop 84 32 Matching, to eliminate QRM (Jack Read) 79 10 Reciprocity disproved (G3GGL) 84 32 Resonance 83 22 Transmitting, general principals 81 2 VHF, importance of correct type with 770Retc 84 17 Air Cells Ever Ready, discussion on 83 28 Alinco DX77 Used by Ted Moore 81 35 Amateur Bands extension of 40metre band 84 39 Amersham Letter from (Angus Vickery) 82 22 Bebbington, Roger Renovation of 680X 79 23 82 44 Renovation of 870A 82 10

u Lighthouse Index Issues 79-84

Bewdley Origins of name 81 23 BBC Cartoons 83 43 Empire service, 1927, Eddystone used for reception, India 79 5 Handbook, cartoons from (1929) 83 43 World Service, Eddystone transmitters supplied 81 4 Eddystone engineer 84 8 BBC Radio 4 Comments on reception in France 84 36 BC453 Valves supplied by EUG members 79 16 Bishop, Doug Memories of Yesteryear (Eddystone employee) 84 26 Blueprints - see under Eddystone BOSE Wave radio/CD review, G3GGL 84 21 Brown, George (G5BJ) Involvement in Rhodesian transmitters 84 8 Campell Island Book available 80 38 Cartoons BBC handbook, 1929 83 43 Condensers Bypass, problems with (Mimco 2245A) 79 38 Cox, Harold Postwar Eddystone design 80 9 Rhodesian transmitters 84 9 DAB Report on (Graeme Wormald) 82 42 DSP Report on (Graeme Wormald) 80 18 De la Mare, James AtNVCFwith ECRand pre-war components 79 39 Letter from Minchinhampton 82 38 Digital Signal Processing Report on, Graeme Wormald , 80 18 Earth, indoor System for (Bryan Marsh) 84 23 Comments on, Graeme Wormald 81 6 Ditto, Ted Moore 81 34 Ditto, with prices achieved, Chris Pettit 82 4 83 4 84 5 880/2 bought-duff! , 82 11 ...82 19 Eddystone Adverts - see advertisements Aerial link, importance of 79 12 Bandspread tuner & patent 82 24 Blueprints Rhodesian transmitters 83 23 640A 83 21 Booklets available 84 17 Diecast boxes 79 20 Design of postwar models 80 9 Patent specification for above 80 10 Components, pre-war, display case of (James de la Mare) 79 39

in Lighthouse Index Issues 79-84

Eddystone (cont'd) Cross referenced to Mimco, Marconi & Hagenuck models 79 15 Drifting problems 79 34 79 42 Staff (historic) - see under individuals' names Factory, present day activities 83 5 Field strength meter 678 84 17 Logarithmic gain controls 80 39 Loudspeakers, article on (Peter Lankshear) 80. 6 Manuals - see Spares Modifications 84 18 Napier, N.Z., presentation of 80 5 Patent, attachment bracket 81 19 Prices Current, discussion 81 6 Ebay 82 4 83 4 84 5 Historic 84 28 Receivers transmitters used with 83 35 comparisons with others(B.M. Sosin) 84 7 Seefunk website 79 41 Short Wave Converter 80 20 ShortWave Manual No. 2, all wave buzzer excited wavemeter 82 7 Spares - see Spares Tank condenser (1936) 82 24 Testimonial, Herb Bartlett re 888A 84 29 Transmitters, Rhodesia 83 22 84 8 84 39 Tuning cord reversed (EB35) 79 12 Two Valve receivers, discussion on 79 36 Used in India, All Wave Four 79 5 Voltage regulators, discussion on 84 18 Which Eddystone ? 80 41 Willings, Alf & Co, agents 82 38 4 Valve Clone receiver (David Fletcher) - see also under TRF Receiver 84 11 Eddystone Light Photo of 80 1 Smeaton's Stump 81 26 Brief history 83 38 Eddystone Lighthouse, Plymouth Hoe Used for special event station 84 14 Eddystone locomotive Restoration completed .....80 39 EUG 80 metre net 79 40 ; 80 18 81 24 81 35 81 37 82 11 A.M. used 83 33 Gibraltar Point 83 17 Plymouth Hoe 83 16 Smeaton's tower 83 17

IV Lighthouse Index Issues 79-84

EUG (cont'd) Badges, lapel, available 81 41 83 32 Computer, new, comments on (G3GGL) 84 39 New member, comments by (Clive Young) 83 40 Desk top publishing considerations 81 27 83 34 Imposter selling QRGs 83 8 Lighthouse computer fighting fund 79 3 80 3 81 3 82 3

Lighthouse index, issues 73 - 78 81 centre Plymouth Hoe, special event station GX3EUG 84 14 Evans, Ian Drifting problem, 888A 80 35 Faults -seeRepairs Fletcher, David 4 Valve Eddystone Clone receiver 84 11 Gillespie, John 830/4 restored 81 18 Mains voltage problems 81 32 G3EUG Callsign acquired (Ted Moore) 81 23 82 5 Plymouth Hoe, activated from 83 16 Gibraltar Point G3EUG activated 83 17 Goat Fell Climbed with EC10 Mk II (Ted Moore) 80 33 Goldberg, John Medium Wave DXing (1942) 82 6 Goodwin, Dave Comments on Medium Wave dx 82 47 Hallicrafters Sky Traveller Owned by Graeme Wormald 81 43 Hammond Electronics Ltd Makers of Eddystone diecast boxes 79 20 Interference - see QRM/QRN KW Vanguard UsedbyG3GGL 83 33 Lankshear, Peter Active antenna design 79 11 Loudspeakers, article on -. 80 6 American stations received in NZ (historic) ....82 40 680 fault cured 83 6 Lapworth, Garnett Rhodesian transmitters, involvement in 84 8 Laughton, George Postwar Eddystone design 80 9 Le Quesne, Peter Invitation to Napier, N.Z 79 39 Presentation of Eddystones in Napier, N.Z 80 5 Lightning Query as to skimming, on surface of sea (Ted Moore) 82 17 Mains voltage problems Discussion and solution (John Gillespie) 81 32 Lighthouse Index Issues 79-84

Marconi Cross referenced to Eddystone, Mimco & Hagenuck models 79 15 HR100, doublet aerial described in manual 79 32 CR150, drifting problems 82 16 Marthinsen, Tor discussion on two valve receivers 79 36 discussion on pre-war superhet models 80 20 Marsh, Bryan Indoor earth system ...84 10 Medium Wave Circle Survey results (brief) 79 41 Medium Wave Dxing Articles on Graeme Wormald 81 42 James de la Mare 82 38 John Goldberg (1942 reports) 82 6 Peter Lankshear (American stations in NZ) 82 40 Comments on Duckworth, Jim 83 41 Elwen, Roy 83 42 Goodwin, Dave 82 47 Moore, Ted 82 18 MILAIR Military air traffic listened to on 990R 79 17 Mimco 2245A, bypass condenser problems 79 38 2273A, 670A variant 79 13 2273B, query as to 79 15 Cross referenced to Marconi, Eddystone & Hagenuck models 79 15 Minchinhampton Letter from, James de la Mare 82 38 Morgan, Chris Drifting problems 79 41 Moore, Ted Goat Fell with EC10 80 33 G3EUG callsign acquired 81 23 Morse, Vic Made up Rhodesian transmitters 84 10 Morse Test Abandonment of 80 3 80 39 NVCF, report on May 2003 79 3 79 4 September 2003 81 26 Null Steerer G4WMX Noise Reducer, article on (Geoff Steedman) 81 7 Ostergaard, Clemens 880 problems 82 19 Paton, Ross Fireat Auckland home 83 40 Pensylvania, letter from JoelBalogh83 14 Pettit, Chris EBay prices & comments 82 4

VI Lighthouse Index Issues 79-84

Plymouth Hoe G3EUG activated 83 16 Prince Charles Owned EB35 82 15 Pye Designers of WSs 18, 19,22,62 83 38 Q-Max Chassis cutters 83 23 Transmitter, advert for & specifications 84 39 QRM / QRN Computer noise, curing problems 79 10 Electric fence, caused by 82 18 Man-made noise, tracing 79 40 Null Steerer, G4WMX Noise Reducer 81 7 'Radio Man' Book available on CO. Stanley of Pye 83 37 RAMAC Query as to 80 28 Answer 81 40 Read,Jack Aerial advice 79 10 Repairs Co-ax problem (888A) 83 20 Condensers, bypass, problems with (Mimco2245A) 79 38 Drifting 79 41 80 35 possible solutions 80 37 Fuses blowing, cured (730/4) 83 14 rearranging ? 84 36 Gain controls, logarithmic 80 39 IF core problem (870) 83 19 Knobs, cracking, problems with 80 5 Magic Eye (840C) 80 26 Mains fuses, discussion on 83 21 Ron Brown 83 30 Peter Lankshear 83 31 Microphony (680X). 82 44 Q-Max chassis cutters 83 23 Scale plate cleaning (680X, 730, 750) 79 23 Screws, case, over-tightening 84 35 Transformer protection 83 21 replacement (730/4) 84 42 Tuning cord reversed 79 12 Sideband fault resolved (830) ...82 30 Signal generators, use of 80 16 Transformer replacement 80 16

Valves in correct places, importance of 79 13 Valve heater short (670) 83 18 Voltage measurements 80 15 Wavechange switch problems (EB37), Chris Morgan 84 35

VII Lighthouse Index Issues 79-84

Royal International Air Tattoo Visit by Graeme Wormald & Ted Moore 80 34 SBS-Eddystone Broadcasting Supplying transmitters to BBC World Service 81 4 Short Wavelengths (the) Article by Stratton & Co, 1932 82 28 Signal generators, use of - see under Repairs Signal reports Codes used, discussion of (Graeme Wormald) 81 .22 Smeaton's Tower G3EUG activated 83 17 83 38 Sosin, B.M. Receiver comparisons 64 7 Spares Air cells 83 28 Cogs, tuning, available (Anthony Richards) 81 24 Dial light bulb holders available 82 45 General 83 2 Diecast boxes (Hammond Electronics Ltd) 79 20 Handbooks 83 2 Manuals 83 2 Amendment sheets 83 20 84 16 Mofset, dual gate, 40673 available 82 16 Pulleys for 750s etc., possibility of 79 17 Squires of Bognor Regis, various spares stocked, cat. available 83 24 Transistors , 81 40

Stanley, CO. Book available 83 37 Steedman, Geoff Null Steerer, article on 81 7 Stratton & Co. Ltd. Advert for All World two 79 27 Advert for 710 (Arabic, Baghdad Weekly Advertiser) 79 43 Combs available 80 40 Cufflinks 80 40 Diecast boxes, patent details 79 20 Short Wavelengths, article, 1932 82 28 Notebook & pencil 80 40 TRF receiver Plans tobuild 83 22 Progress 84 18 Problems with 84 19 Using Alinco transceiver ...81 35 1570s acquired, poorcondx 81 39 Vickery, Angus Letter from Amersham 82 22 Vintage Communications Fair - see NVCF Voltage measurements - see under Repairs Voltage regulators Discussion on 84 18 Wavemeter All-wave buzzer excited described & circuit 82 7 Whiting, David W. 830/4 models in Canadian Govt. service 79 29 Willings, Alf & Co Eddystone agents 82 38

viii Lighthouse Index Issues 79-84

Wireless Hill Used for EUG net 81 36 Wireless World Review of All World Two kit 79 24 Wormald, Graeme BOSE radio, report on 84 21 D Day, 60th Anniversary visit to Normandy :..84 36 DAB, report on 80 42 DSP, report on 80 18 Kilodyne Four to be built? 82 46 Medium Wave DXing, article on 81 42 Reciprocity disproved 84 32 Wythall Rally report on (G3GGL) 84 38 Young, Clive Comments various 83 40

Index to Eddystone models over the page

IX Lighthouse Index Issues 79-84

INDEX TO EDDYSTONE MODELS

issue page

All Wave Four Used in India, rejuvenated after 50 years 79 6 All World Two Kit review, Wireless World 79 24 Discussion regarding (Tor Marthinsen) & picture 79 36 All World Eight Discussion on, Tor Marthinsen 80 22 Amateur Bands two Discussion regarding (Tor Marthinsen) 79 36 Atlantic Two Discussion regarding (Tor Marthinsen) & picture 79 36 EA12 Full description and pictures 81 10 EB35 Acquired for restoration 80 32 Restoration continues 81 37 Ditto 82 15 Prince Charles, owned by 82 15 Tuning cord reversed 79 12 Wavechange switch problems 84 35 EB35 Mk II Output transistor replacement 79 17 EClOMkll Goat Fell, used portable 80 33 Mimco equivalent 79 15 ECR At NVCF, picture of 79 39 Discussion regarding (Tor Marthinsen) 80 22 Eddystone Two Discussion regarding (Tor Marthinsen) 79 36 Eddystone Short Wave Discussion regarding (Tor Marthinsen) 79 36 EM34 Mimco equivalent 79 15 Empire Two Description, circuit & pictures 81 28 Discussion regarding (Tor Marthinsen) 79 36 ERA 7 Discussion regarding (Tor Marthinsen) .< 80 22 Homeland Four Factory advert 83 25 Kilodyne Four Description, circuit, pictures 82 31 To be built ? TedMoore 83 19 Graeme Wormald 82 46 Orion Sold to Egypt 83 5 Sold on Ebay + picture 84 5 Scientific Two Advert for 80 12 Discussion regarding (Tor Marthinsen) & picture 79 36 Lighthouse Index Issues 79-84

Sentinel - see 1004 Short Wave two Discussion regarding (Tor Marthinsen) 79 36 Full description 80 13 Sphinx Discussion regarding (Tor Marthinsen) 80 22 Super Six Discussion regarding (Tor Marthinsen) 80 20 Transmitters 215, info in blueprint register 80 28 Stereo 500 84 21 358X Used at Admiralty Signal Establishment 82 6 40A Used by Ted Moore 82 18 400 Advert.Webb's Radio (1941) 82 23 440/450 Used in LCTs, D Day 80 29 640 Fault cured, dry joint 80 29 Another dry joint 80 31 Phasing control improvement 84 20 640A Blueprint found, info. Sought 83 21 659/670 Discussion as to identity (Ted Moore) 80 31 670 Merchant Navy, popular with 82 39 Valve heater short 83 18 670A Mimco equivalent 79 15 670C Merchant Navy, popular with 82 39 Mimco equivalent 79 12 680 Fault cured (Peter Lankshear) 83 6 680X Microphony 82 44 Renovation of (Roger Bebbington) 79 23 Scale plate cleaning 79 23 840A Importance of aerial link 79 12 730 Scale plate, cleaning 79 23 Fuses .....84 36 Power transformer disaster 84 42 750 Doublet aerial described in Marconi HR100 manual 79 32 Pulley replacement query 79 16 Scale plate cleaning 79 23 760 New model discovered ? .82 13 82 46 770R Aerial, correct type vital 84 16 Valves in wrong places 79 12 770U Full description and pictures 83 9

xi Lighthouse IndexIssues 79-84

820 H.T. circuit repair 79 16 830 AFgain problems cured 80 36I Knobs cracking 80 5 Power supply problem 83 14 RCAF modification labels 80 36 RCMP model 80. 36 Restored to working order (John Gillespie) .....81 18 Usage in Canadian Govt. service (David W. Whiting) 79 29 Sideband fault resolved 82 30 Spares kit 80 5 840C A.M., used on net 83 33 Magic Eye repairs 80 26 Valve holder problem 82 15 870 Full specifications 84 30 IF core problem 83.... .19 870A Models acquired (Ted Moore) 79 15 Restoration (Roger Bebbington) 82 10 880/2 Restoration of 82 11 List of faults, etc 82 19 888A Co-ax problems 83 20 Drifting ...79 41 Possible solutions 80 37 Advert 84 27 84 29 Restoration (Ted Moore) 82 12 Testimonial (Herb Bartlett, G5QA) 84 29 910/1 Marconi cross reference to HR101 79 15 940 Drift & heating problems 79 34 Origins of 79 35 940/1 Variant with crystal controlled channels added 79 14 958 Hagenuk & Marconi equivalents 79 15 1570 Poor sets advertised, acquired (Ted Moore) 81 39 1004 Hagenuk equivalent .....79 15 Description & picture 80 43 1650 Supplied to STC : 81 4 1940/1 Info, sought 83 21 Sent to Marconi for evaluation 79 15 1990R Tuner damaged by static ? 82 17 Used on MILAIR frequencies 79 17

xn LIGHTHOUSE INDEX - ISSUES 85 - 90

GENERAL INDEX

issue page

Advertisements 358X (Webb's Radio) 86 35 East Coast Wireless, repairs 88 39 89 43 90 33 Panda Cub 87 43 88 45 Wireless for the Warrior 89 37 Aerials Better Radio Reception, booklet available 89 28 coupling query 86 23 delta loop 88 22 89 23 G5RV problem & solution 87 23 h.f., receiving, plan of 90 40 importance of getting right 87 23 inverted V 87 26 loop to use on 60 metres / 5 mHz 85 32 86 12 used by G3GGL, discussion by Peter Lankshear 85 36 comments, further 87 20 maritime mobile 90 24 matching units 85 41 86 12 87 19 portable, usedon EUG net 85 16 88 18 reciprocity 85 40 repairs to, G3GGL 89 32 television, too many watchers causing causing fault (sic!) 85 37 types used by G7AIR 85 16 Amateur radio astronomy experiments Jack Read 90 20 Amplitude Modulation comments and frequencies 87 42 88 8 89 46 EUG net gains experience 88 44 in use by EUG net 88 16 intra - EUG dx record 90 50 transmitter proposed (G3GGL) 88 45 details 89 10 modifications best ignored 90 48 Astronomy experiments with amateur radio Jack Read 90 20 Auctions, vintage radios Charles Miller 86 39 Bewdley, letter from G4SPZ 88 26 tidal 89 30

Page it Lighthouse Index - issues 85 - 90

Bussey, Gordon award given 90 29 Marconi collection 89 44 Cauthery, Brian (VE3DFC) repairs to 830/4 90 10 China Radio International prize winning EUG member (VK3DWZ) 85 38 report on tour (Terry Robinson) 86 6 Colchester Rally report on (Ted Moore) 86 20 Collingwood, HMS communications museum 86 9 Cooke, Bill (GW0ION) biography 87 7 made EUG Hon. Life President 87 4 88 10 pre-war servicing recollections 90 46 wartime recollections 88 10 89 31 888A, comments on 89 46 Cox, Harold info supplied to Bill Cooke 88 41 de la Mare, James letter from Minchinhampton 89 44 DST 100 rx oneBay 90 ....4 Duffers' Guide see fault-finding Dunstable Downs Rally brief report 85 25 DX77E purchased by Ted Moore 89 23 East Coast Wireless repairs undertaken 88 9 advert 88 39 90 33 eBay comment on, G3GGL 86 30 examples & prices 86 26 86 39 87 11 88 23 89 17 90 15 Echolink brief details 85 5 Eddystone accessories on eBay 86 26 activities, personnel, pre-war 88 41 advertisements - see under advertisements all - Eddystone QSO 87 21 Bathtub anecdotes (Bill Cooke) 87 7 Better Radio Reception, booklet available 89 28 clamshell radios 87 17 coils on eBay 89 17 components used in home-brew set (G3TVM) 86 27 Eddystones at Marconi sales conference 88 4 Memoirs of a Collector 89 6

Hi Lighthouse Index - issues 85 - 90

Eddystone (cont'd) Panadaptors,EP961 & EP17R acquired by Ted Moore 85 23 Neutraliser 85 7 power supply details, valve models 90 30 Post Office order for, 1971 85 43 pre-war servicing recollections (Bill Cooke) 90 46 Short Wave Manuals available 87 31 88 21 spares - see Spares speaker oblong, 935, oneBay 89 17 round, on eBay 89 17 thermistors used, tech. info 90 23 4 metre working, post-war (G3GGL & G3JQE) 85 10 899 speaker on eBay 87 12 669 S meteron eBay 89 17 Eddystone Broadcast FM transmitter flattened in gales but still working ! 90 9 transmitter for Grenada 90 45 update on company activities 90 7 Eddystone Light QSL cardacquired 90 5 Esselle, yacht launch day 90 22 Navtex fitted 90 26 Orion 5000 & 960 in use 90 25 photo 90 1 used maritime mobile 89 29 EUG aerials used by G7AIR 85 16 a.m. favoured mode ? 87 42 a.m. nets 88 16 88 22 88 44 90 50 China tour won by member 86 6 Cooke, Bill made EUG Hon. Life President 87 4 biography 87 7 pre-war servicing recollections 90 46 wartime recollections 88 10 89 31 888A, comments on 89 46 finances 85 18 Great Orme, transmitting from 88 18 Lighthouse available on CD / DVD 90 3 feedback 90 42 member rips off silent key widow 86 4 membership location 90 51 member's station, Barry Jackson, ZS2H 85 21 net frequencies 87 44 89 48 90 52 special event station GB4WTA 86 43 80 / 40 metre net 85 16 /MM from yacht Esselle 89 30 86 18 89 26 90 41

Page Lighthouse Index - issues 85 - 90

Fault-finding audiostage problem 90 36 condenser tester & re-former 83 35 Duffers1 Guide (G3GGL) part one 86 32 part two 87 38 part three 88 50 part four 89 38 part five 90 18 Fletcher, David (G3TVM) home-brew set from Eddystone components 86 27 photo of shack 86 29 Gander frequency 86 22 GB4WTA special event station 86 43 87 25 Gosling, Graham repairs undertaken 88 9 830/7 repairs 88 28 Hertz / cycles discussion (G3GGL) 88 7 Icom 718 acquired by G3GGL 85 33 Interference caused by bug killer 87 21 domestic causes 90 43 Ionosphere changes in 90 26 Isle of Man working from (Ted Moore, G7AIR) 85 16 Jackson, Barry - see under EUG & Port Elizabeth Jersey Museum of German Occupation visit by Peter & Anne LeQuesne 89 19 Knickebein Hallicrafters used in Avro Ansons 88 56 Lankshear, Peter The Wormald Anomaly 85 36 television aerial problem, Qld 85 37 870 modifications 88 58 LeKostaj, Joe - see under Letter from Illinois Le Quesne, Peter & Anne visit to Museum of German Occupation, Jersey 89 19 world trip, visiting Bewdiey 88 7 Letter from Illinois Joe LeKostaj 85 6 Lighthouse model made for Ted Moore 86 22 Marconi collection 89 44 90 29 Eddystones at sales conference 88 4 Marine band, MF frequencies to monitor 88 15 89 24 Marthinsen, Tor power supplies info 90 30 tech details of thermistors as used in Eddystones 90 23

Page V Lighthouse Index - issues 85 - 90

Memoirs of an Eddystone collector Anthony Richards, GW4RYK 89 6 Miller, Charles contact details for radio auctions 86 39 Mimco 2273a oneBay 86 39 Minchinhampton, letter from Marconi collection 89 44 Multimeter auto-ranging, digital, pocket 85 42 Nantwich, letter from Jack Read 88 48 Navtex in use on Esse//e 90 26 NDBs logged by Ted Moore 85 18 Nicholls, Joan comments on comms. receivers pre-war 90 4 Panda Cub advert 87 43 88 45 acquired by G3GGL 88 45 Port Elizabeth letter from (ZS2H) 86 42 Post Office order for Eddystones (1971) 85 43 Power supplies - see under Eddystone Propagation changes in ionosphere 90 26 Q Code controversy discussion on 88 40 QUT, query as to 90 23 90 42 QRM/ QRN - see Interference Queen Easy Net schools'CCF net 85 32 Read,Jack Astronomy experiments with amateur radio 90 20 Realistic DX-340 comments on 85 18 Repairs - see also Fault finding East Coast Wireless 88 9 88 39 89 43 90 33 to 830/7 (useful tips all models) 88 28 to 830/4, ditto 90 10 trimming cores 89 25 vernier catching scale 89 29 Resistors colour code 89 35 Richards, Anthony Memoirs of an Eddystone Collector 89 6 Robinson, Alan 1990R repairs effected 87 32 Robinson, Terry (VK3DWZ) China Radio International prizewinner 85 38 86 6

Page Lighthouse Index - issues 85 - 90

Royal International Air Tattoo report on (Ted Moore) 86 21 ditto (Graeme Wormald) 86 37 R107 receiver used by CCF 89 6 SBS - see Eddystone Broadcast Silent Keys Charles Miller contact details (auctions) 86 39 origin of phrase ..86 40 value of radio equipment 85 4 f 85 27 i 86 39 I EUG member guilty of rip-off 86 4 << SINPO code SWL broadcast stations 85 32 88 40 Spares Birketts of Lincoln 89 34 cases sought 87 30 Cricklewood Electronics 90 44 dial lamp control module (EC10), brief details 90 44 Fish, Jim (valves) 89 34 Isoplethics 89 34 service information (not spares), Ted Moore 90 2 Maplin 89 34 Radio Spares... 90 44 Simmons, Dave 90 2 Squires of Bognor Regis 89 28 89 34 Ted Moore-not!! 90 28 transistors 87 28 1990R diodes, varicap 87 33 FETs 87 33 ICs 87 33 meter 87 33 transistors 87 33 Squires of Bognor Regis misc. spares available, catalogue 89 28 Standard Frequency Transmissions WWV.RWM 89 26 Stratton & Co D-Day communications equipment 85 39 patents - see under Eddystone S.215 transmitter 88 17 Telford Rally report , 87 27 1 Test gear , prices 85 21 [ Thermistors technical info, as used in Eddystones (Tor Marthinsen) 90 23 Tsunami comments on (Chris Pettit) 89 4 Valves classes described (G3GGL) 87 36 life expectancy 90 27 octals, American 89 35

Page vfi Lighthouse Index - issues 85 - 90

VHF dxing general comments 88 21 VMARS a.m. frequencies 87 43 Webb's radio - see also under advertisements Hallicrafters agents 88 56 managers, pre-war 88 41 Wireless Telegraphy Act, 1904 centenary 85 26 copy of license, G3GGL (1949) 85 30 Wisbech seaport 89 30 Wireless for the Warrior book available 89 36 Workshop tidying up procedure, ATV 86 41 WS11 usedbyJTC 89 33 WS12 usedbyCCF 89 33 WS19 used by CCF 89 6 usedbyJTC 89 33 WS22 usedbyCCF 89 6 usedbyJTC 89 33 WS38 usedbyCCF 89 6 WS88 usedbyCCF 89 6 Y Service Hallicafters purchased from Webb's Radio 88 56 Nicholls, Joan 90 4 40 metre band extension of 86 37 in use, amateur 88 12 60 meter band available for amateur use UK/USA 85 39

Page l//it INDEX TO EDDYSTONE MODELS

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31A oneBay 89 18 40A oneBay 88 24 used on EUG net 88 18 215 used by RAF & brief details 88 17 440 quality components used 85 7 in amateur use, postwar, 4 metre band 85 10 oneBay 86 13 358 advert (Webb's Radio) 86 36 fault cured 88 20 HMS Collingwood, aboard 86 10 included in Wireless for the Warrior 89 36 RAF usage proved 87 30 504 oneBay 87 12 90 17 556 comments on (Ted Moore) 89 28 resistors gone high 86 22 640 obituary (b. 1948, d. 2004) 88 46 repairs to (Barry Jackson) 86 42 659/670 power supply details 90 30 soldoneBay 86 39 88 25 seized bearings 88 20 670A power supply details 90 31 vernier scraping dial 89 29 670C acquisition & planned restoration (Ted Moore) 90 28 power supply details 90 31 680X faulty consignment to India 87 9 in use in South Africa (Barry Jackson) 85 31 oneBay 90 17 720 (Yachtsman) in Jersey museum 89 19 730/4 acquired bt Ted Moore 85 23 CCF, used by 89 6 crystal calibrator problem 85 19 included in Wireless for the Warrior 89 36 in useon EUGnet 88 12 good points 88 12 740 S687psu 88 20 750 acquired by David Fletcher, G3TVM 86 28 resistor in output stage - not! 90 25

Lighthouse Index - issues 85-90

Page i*Y 770R HMS Collingwood, aboard 86... 10 830/4 mains transformer burn-out 90 10 acquisition & restoration by Brian Cauthery, VE3DFC 90 10 830/7 restoration (Graham Gosling) 88 28 840 Braille model on eBay 86 26 power supply details 90 30 840A thermistor problem 86 21 power supply details 90 31 840C on eBay 86 26 90 17 power supply details 90 31 870/870 A drifting cured 90 24 eliminates QRM : 85 21 modified, with mains transformer 88 59 on eBay 86 26 86 31 86 39 90 16 power supply details 90 32 variations 90 27 888/888A audio output-complex problem resolved (G3GGL) 90 36 external difference between 888 & 888A 87 11 in use in South Africa (Barry Jackson) 85 31 on eBay 87 11 stability problems, new 89 46 909 acquired from Sweden 89 7 power supply details 90 32 930 included in Wireless for the Warrior 89 36 940 acquired by David Fletcher, G3TVM 86 28 information & specifications 85 12 on eBay 86 26 88 23 oxidation on'phone jack 86 22 958/1 Post Office, 50 sets acquired (1971) 85 43 restoration (Graham Gosling) 88 28

960 acquired by Ted Moore, restoration begun 86 28 on eBay 89 9 restoration continued 88 14 90 22 964/7 acquired by Ted Moore 85 23 used for monitoring, North Sea oil platform 86 21 use of Telefuken panadaptor 86 40

Page X Lighthouse Index - issues 85 - 90

990R microphony 89 22 tuning gear problems 89 27 using portable 88 21 variations 90 27 1002 HMS Collingwood, aboard 86 10 problems with, Ted Moore 86 17 1560R/2 query as to model designation & help wanted 85 22 sold as Marconi Marlin 86 19 1990R acquired by TedMoore 85 23 HMS Collingwood, aboard 86 10 problems resolved (Alan Robinson) 87 32 All World Two owned by Davis Fletcher, G3TVM 86 28 All World Eight in military use 89 26 Atlantic Two sold at auction 86 39 EA12 oneBay 86 26 86 31 88 24 90 15 EB35 acquired by Ted Moore 87 29 psu plug polarity 85 20 damaged cores & transformers 89 25 variations 90 27 EB37 acquired by TedMoore 87 29 EC10/EC10Mkll acquired by Ted Moore, new variant ? 87 28 dial lamp module 90 44 EUG net, used on 88 18 HMS Collingwood, aboard 86 10 oneBay 88 24 as new model 90 15 Portugal 89 6 psu plug polarity 65 20 variations 90 27 EM34 acquired at NVCF 85 8 Orion 5000 acquired & recommissioning by Ted Moore 85 27 86 15 in use 88 19 on yacht 'Esselle' 90 25 on Eddystone Radio QSL card 88 4 R101C included in Wireless for the Warrior 89 36 Scientific Two discovered by member 90 26 Ultra Short Wave Receiver on offer 87 17 WS57 included in Wireless for the Warrior 89 36

Page X/ Lighthouse index issues 91-96 Lighthouse index issues 91- 96

©ENERAL INDEX

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Advertisements East Coast Wireless 93 3 94 4 95 6 Eddystone bandspread tuning 92 29 Eddystone Radio EA12 96 51 EC10 96 51 840C 95 41 96 51 940 95 41 Panda Radio, Explorer 1 91 7 Stratton & Co All World Two 92 30 All World Six 95 24 95 25 microdenser 96 42 840C 95 40 940 95 40 Webb's Radio & Strattons, R/T equipment 91 14 Webb's Radio (1942) 93 30 Aerials end-fed, current, measuring 94 29 G0CWT (Ben Edginton) loop 91 11 92 41 New Zealand, log periodic 93 28 single-wire multi-band 94 42 yacht Esselle 93 12 Ainslie, Alan visit to collection of Eddystones 92 4 93 8 Amateur radio license Ofcom proposals 91 12 91 22 past and future (Graeme Wormald) 95 14 Amplitude modulation discussion as to'critical frequency1 91 34 net / test reports - see under EUG society 91 36 speech amplifier 94 8 Anglesey Radio sketch by david Oakden, G3UFO 93 34 Auckland, letter from RossPaton 91 5 Bathtub closure of 95 7

Page ii Lighthouse Index, Issues 91-96

Bishop, Doug 'My Eddystone Experience', article 96 40 Bletchley Park use of Eddystones 92 31 Books available RSGB reprints of 1940s books, set 96 29 'Wireless, the Crucial Decade1, book 94 41 Brown, George Stratton & Co development engineer 92 35 Bug keys, Eddystone picture 95 10 soldoneBay 91 20 Bussey, Gordon 'Wireless, the Crucial Decade', book 94 41 Chess league schools', Graeme Wormald 93 10 CodarAT5 problems with 96 48 Cooke, Bill became licensed amateur 93 6 Eddystonememories, pre-war 92 34 Lancaster bomber crash 95 34 message from, as EUG president 96 13 photos of (wartime) 96 47 Western Desert memories, 1942 91 37 94 12 Cairo leave 96 45 Cox, Harold escapes death ! 92 35 sceptical re amateurs 95 11 Critical frequency discussion on 91 34 Crystal general discussion 92 25 Cunard White Star using S700 92 16 Digital broadcasting comments on 96 34 Duffers' guide to valve set fault finding part six 91 30 part eight 93 36 eBay prices 91 19 92 17 93 25 94 13 95 28 summary 96 16 Eddystone advertisements - see under adverts bandspread tuning 92 29 bug keys donated to Bletchley Park (G3VA) 96 53 picture 95 10 soldoneBay 91 20 coils sold on eBay 91 21

Page Hi Lighthouse Index, Issues 91-96

Eddystone (cont'd) collection AlanAinslie 91 8 92 4 93 8 reducing, Graeme Wormald 94 50 diecast feet sold on eBay 91 21 early models (Tor Marthinsen) 94 35 eBay -see eBay prices Edometer sold on eBay 91 21 factory, closure of Bathtub 95 7 favourite model (Terry Parker, ex Eddystone) 94 21 German connection (Bill Cooke) 93 .6 magic eye(DM70), improvements 96 22 manuals 95 22

\7D Z 'My Eddystone Experience1, Doug Bishop 96 40 Panadaptor sold on eBay 91 21 plug-in coils 94 36 police radio equipment sought for Riley RM TA 91 15 repairs - see Repairs & servicing Secret Service, used by 92 31 Short Wave Manual on eBay 93 25 95 30 large order from USA 96 35 S-meter 94 27 95 10 speaker, diecast, brought to door (Ted Moore) 94 46 visit by RSGB, 1947 92 7 EddystoneLighthouse pictures 95 31 Edometer sold on eBay 91 21 Edwards, Arthur C welcomes RSGB 92 7 ERflP effect on transistors 93 31 English language sellipng is iverralnt (dyslexia lures !) 91 12 Esselle aerials for yacht 93 12 95 18 NAVTEX 93 16 maintenance 94 49 transmitting from sandbank 96 32 EUG Colchester rally, represented at 93 23 future of 93 4 94 5 95 4 96 6 Lighthouse, available on CD 91 3 letters from: Clark, Tom 91 43

Pageiv Lighthouse Index, Issues 91-96

EUG (cont'd) Lighthouse letters from: Evans, Ian 91 41 King, Dick 91 40 Lankshear, Peter 91 42 LeKostaj, Joe 91 43 Nock, Ben 91 39 Pollard, John de B 91 41 Powell, Greg 91 39 St. Leger, John 91 42 Thomas, Andrew 91 43 Thomas, Keith 91 43 Wakelam, Ernie 91 43 Walker, Dr. Peter 91 42 White, John 91 42 Wright, Paul 91 39 80 & 40 metre nets 91 44 92 22 93 41 94 34 95 26 96 49 Moore, Ted, comment on demise 96 33 operating on, /MM 91 13 President, message from 96 13 website proposed 95 4 96 6 Wormald, Graeme, involvement of 95 7 GCHQ use of Eddystones 92 31 Gibson, Bill, GMOKMG silent key 96 34 G6SL activated 92 35 Harmer, Chris EUG website 96 6 Harris, Geoff 990R fault finding 93 38 Hawker, Pat bug key donated 96 53 Junkbox baby suitable VFO 91 35 valves 92 24 Lancaster crash witnessed, BillCooke 95 34 Lankshear, Peter discussion, 870 & 19AQ5 valve 92 36 Laughton, A Century of Achievement, bookoneBay 93 25 Laughton, Malcolm welcomes RSGB 92 7 Le Quesne, Peter message from NZ 96 13 Lighthouse Magazine see under EUG

Page i/ Lighthouse Index, Issues 91-96 Litzendraht origin of word 93 23 Marconi 1 and the making of radio', exhibition 96 12 IMR54, 700 equivalent 92 16 name disappearing 95 23 Seaguide, equivalent of EC10M 94 9 2232A, capacitor problem 94 44 2245A, 670A equivalent acquired (ted Moore) 94..... 48 2273A fault cured 93 18 frequency coverage 96 36 3373A, built-in P.A 96 36 Maritime radio history of, UK (Angus Vickery) 96 8 Marthinsen, Tor early Eddystone models 94 35 Eddystone Short Wave story 96 14 letter from Tonsberg 96 44 magic eye improvements 96 22 Morse code learning difficulties and aspects 96.. . 26 using Kent paddle key 96 53 Mt. Everest Expedition, 1936 using Eddystone Homelanders 95 36 Navtex in use on Esselle 93 16 NVCF report, Chris Pettitt 91 4 Oakden, David AngleseyRadio 93... 34 Ofcom see also amateur radio blitz on pirates broadcasters 94 51 Orkney Wireless Museum visit to (Chris Pettitt) 92 37 Panadaptor soldoneBay 91 21 Parker, Terry favourite Eddystone and comments onmodels 94 20 Patents see Stratton & Co Ltd Phones, cordless frequency 93 18 Police Gestapo tactics against amateur 93 22 Radio equipment sought for Riley RM 91 15 Propagation comments on (Ted Moore) 93 17 Pye Broadcast rx acquired (Ted Moore) 94 45 QRM/QRN discussion as to each, broadband interference 91 13

R107 usedbyCCF 91 10

Page vi Lighthouse Index, Issues 91-96 Reid-Jones, Roland Yugoslavia, WWII 91 10 Repairs & servicing alignment, front end (Gerald Stancey) 92 6 book, on-line, valved comms. receivers (G8JFJ) 96 "....52 Duffers' guide to valve set fault finding part six 91 30 part seven 92 8 gear teeth replacement GOMQG 94 16 GW4RYK 95 Z.'Z.Q Gosling, Graham (East Coast Wireless) ;.93 3 94 4 95 6 96 5 Royal Signals assessment of 958/7 94 6 RSGB reprints of 1940s books, set available 96 29 visit to Eddystone, 1947 92 7 Sat Nav acquired by Ted Moore 95 23 S Meter optional extra 95 10 S.P.A.M. N.Z. a.m. society 91 36 Spares Birkett's of Lincoln (thermistors) 94 51 fingerplates, comments on (Ted Moore) 95 17 manuals 95 22 Simmons, Dave- handbooks, spares 91 2 Farnell Electronics (gear teeth) 94 17 Spider rubber, in school 95 42 Stratton & Co Ltd advert 91 14 patents attachment bracket 95 32 choke, h.f 96 55 condenser, variable 96 41 trimming tool 91 27 variable condensers 92 26 S meter 95 10 Sunderland, letter from (RoyElwyn) 91 18 Tonsberg letter from (Tor Marthinsen) 96 44 Valves list, reference, 1931 92 12 transmitting types 92 24 TT11 power tetrode 92 41 93 41 12AT7 in speech amplifier 94 8 Valves (cont'd) 4304CA specifications 96 38 VMARS membership details 96 48

Page v\i Lighthouse Index, Issues 91-96

Webb's Radio advert 91 14 built & sold KT66 tx 96 54 Wireless World Eddystone Short Wave article 96 15 radio, history of, exhibition 96 12 Wormald, Graeme amateur radio, comments on 95 14 collection, reducing 94 50 involvement of in EUG 95 7 phantom spider incident 95 42 schools' chess league 93 10 Wythall Rally scale plates on sale 96 34

Page Lighthouse Index, Issues 91-96

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358 unwanted emissions 92 32 440 acquired by Ted Moore 96 39 450 acquired by Ted Moore 96 39 504 acquired (Ted Moore), with strange valve 94 47 mains switch problem 95... 20 556 brief details and picture 96 37 640 drive cord joy 95 19 presented to RSGB 93 . 7 640A blueprint found 94 49 670A 670/670A hybrid 93 16 drive cord comments 95 19 magic eye improvements 96 22 Marconi variants 96 36 670C magic eye improvements 96 22 Marconi variants 96 36 700 history 92 16 730/1A oneBay 93 26 730/4 oneBay 93 26 usedbyCCF 93 10 750 /2 version 95 18 favourite model (Terry Parker) details, test results 94 21 oneBay 93 26 output stage valve 91 6 testimonial 94 28 vibrator psu 94 27 760 listed by factory 94 49 770R oneBay 92 19 770S brief description and picture 96 36 770U oneBay 92 19 830 meter end-stopping 94 51 tuning lock 91 12 /8 models released 96 36 /9 models released 96 36

Page tx Lighthouse Index, Issues 91-96

840C advertisement 95 40 95 ".""'"41 oneBay 94 14 mains wrongly wired 95 22 stability 95 19 870 valves used, comments on (Ross Paton) 91 7 19AQ5 valve, discussion (Peter Lankshear) 92 36 870A oneBay 93 26 valve failure 94 44 94 48 880 usedbyGCHQ 92 33 oneBay 94 13 tuning mechanism problems 91 5 888 brochure reprint 96 18 Bill Cooke, comments 96 19 888A oneBay 94 15 940 advertisement 95 40 95 41 development history 95 .39 oneBay 94 13 refurbishment (Graham Sutton) 92 13 950 valved radio to cope with EMP 93 32 958 assessment, School of Signals (1977) 94 6 maritime radio, used by 94 9 sold oneBay 91 21 990R drive cord comments 95 19 fault finding (Geoff Harris) 93 38 layout differences 95 23 oneBay 94 14 scale calibration 94 28 990S drive cord comments 95 19 mystery variant (Louis Muelstee) 96 24 oneBay 94 14 scale calibration 94 28 1001 sold oneBay 91 20 1002 lack of AVC, cured 94 44 oneBay 95 28 oneBay 95 29 1004 oneBay 95 28 1529 RTTY terminal 96 34

Page Lighthouse Index, Issues 91-96

1560 ROM missing 93 19 1650 sold on eBay 91 19 1706 transmitter sold on eBay 91 19 2232A (Marconi) capacitor failure 94 44 2245A (Marconi) 670A equivalent acquired (ted Moore) 94 48 2273A (Marconi) fault cured 93 18 frequency coverage 96 36 3873A (Marconi) PA built in 96 36 6100 joys & pitfalls of ownership (Dave Jones, MW1DUJ) 91 25 All World Two advert 92 30 sold on eBay & pictures of 92 18 All World Six advertisement 95 24 95 25 Atlantic Two comments and picture 94 39 Crystal Set picture of 92 5 ditto plus comments 94 37 EA12 frequency coverage & stations audible 95 16 meter end-stopping 94 51 sold on eBay 91 20 94 15 EB35 brief description 96 39 EB35A differences from standard model 96 37 EC10 on eBay 92 19 93 25 95 29 resistor failure, cured 94 44 scale markings, comments on (Terry Parker) 94 28 95 23 EC10M equivalent of Marconi Seaguide, full details 94 9 Homelander used by Mt. Everest Expedition, plus details & pictures 95 36 Homeland Four picture of, at Colchester rally 93 24 Kllodyne Four restoration 96 10 KT66 built for RAF & RN reservists 96 54 Portable Three comments 94 38 Queen Mary - see 700

Page xi Lighthouse Index, Issues 91-96 Regional One 93 5 ditto and comments 94 40 Scientific Four comments and picture 94 39 Scientific Five comments and picture 94 40 Scientific Portable Three comments and picture 94 41 Scientific Short Wave Three comments and picture 94 40 Scientific Two owned by member 93 17 Scientific Screened Grid H.F. Short Wave Three New model discovered resembling above (Percy Mistry) 91 8 Short-Wave comments and picture 94 39 first Eddystone 96 14 Wireless World extract 96 15 Super Six omitted from QRG, but evidence of 96 44 Three comments and picture 94 38 Twin picture of & on display 93 24 comments and picture 94 38 sold on eBay & picture of 92 17 Two comments and picture 94 38 Unknown model see Scientific Screened Grid H.F. Short Wave Three

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