INDEX MUSEUM PIECES Broadcast Receivers 78 C2-C4 Radio Bygones, Issues Nos 73-78 Command Sets 73 C1-C4 ARTICLES & FEATURES Crystal Sets from Bill Journeaux’s Collection 74 C4 K. P. Barnsdale’s ZC-1 77 C2 AERONAUTICAL ISSUE PAGE Keith Bentley Collection 75 C2-C4 The Command Set by Trevor Sanderson Michael O’Beirne’s MI TF1417 77 C4 Part 1 73 4 National Wireless Museum, Isle of Wight 74 C3 Part 2 74 28 Replica Lancaster at Pitstone Green Museum 76 C1-C4 Letter 75 32 Russian Volna-K 74 C1-C2 Firing up a WWII Night Fighter Radar AI Mk.4 Tony Thompson’s Ekco PB505 77 C3 by Norman Groom 76 6 NEWS & EVENTS AMATEUR AirWaves (On the Air Ltd) 76 2 Amateur Radio in the 1920s 73 27 Amberley Working Museum 74 2 Maintaining the HRO by Gerald Stancey 76 27 Antique Radio Classified 75 3 77 3 BOOKS 78 3 Tickling the Crystal 75 15 ARI Surplus Team 73 3 Classic Book Review by Richard Q. Marris BBC History Lives! (Website) 76 2 Modern Practical Radio and Television 76 10 BVWS and 405-Alive Merge! 74 3 CHiDE Conservation 74 3 CIRCUITRY Club Antique Radio Magazine 73 2 Invention of the Superhet by Ian Poole 76 22 HMS Collingwood Museum 74 3 Mallory ‘Inductuner’ by Michael O’Beirne 76 28 Confucius He Say Loudly! 74 2 Duxford Radio Society 78 3 CLANDESTINE Eddystone User Group Lighthouse 74 3 Clandestine Radio in the Pacific by Peter Lankshear 73 16 77 3 Spying Mystery by Ben Nock 74 18 78 3 Letter 75 32 Felix Crystalised (BVWS) 77 2 Talking to Mosquitoes by Brian Cannon 77 10 Hallo Hallo 75 3 Letter 78 38 77 3 Jackson Capacitors 76 2 COMMENT Medium Wave Circle 78 2 A thousand words? 73 1 MicroSpy Ltd, chip decoders 77 3 Fascination / All World 74 1 Military WARS 74 3 Majestic / More Pages / Nice to See You 77 1 Million Dollar Auction 73 2 Needed or Not / Thanks / Worm Warning 75 1 New Zealand Crystals (NZVRS) 75 3 New For Old / Dates 78 1 NZVRS Bulletin 73 3 Replica / Balance 76 1 77 3 78 3 DOMESTIC Old Timers’ Bulletin (AWA) 77 3 Kenmac Book by Eric Kempshall 78 24 Radio Waves (HRSA) 77 3 My Favourite Dinosaur, the Majestic 90 Savoy Hill for Sale 77 2 by Peter Lankshear 77 16 Savoy Hill Publications 73 3 74 3 MARITIME 75 3 Eddystone EY11 Receiver by Ben Nock 75 9 Titanic Memorial Weekend 77 3 Volna-K – an Unusual Russian Receiver TV Graphics Review 75 3 by Michael O’Beirne 74 8 78 3 Vintage and Military ARS 75 2 MILITARY 77 3 Blue Joker and all that Jazz by John Teague 75 31 78 3 Telefunken WWII Superhet Receiver E52 ‘Köln’ Vintage Radio B&B 73 3 by Dick Rollema VMARS and Silent Keys 73 2 Part 1 78 14 Worldradio Magazine 74 2 The Command Set by Trevor Sanderson 77 3 Part 1 73 4 Part 2 74 28 READERS’ LETTERS Letter 75 32 618Ts on the Air 75 32 ZC1 of New Zealand by K. P. Barnsdale Airmec Receiver C864 76 33 Part 1, History 77 34 ‘Airwaves’ (poem) 74 34 Part 2, Take a Look Inside 78 19 Another Spy Mystery? 75 35 Mystery ‘Scope 76 34 MISCELLANY BC-348 75 32 As it Seemed Then ... the 1930s by Pat Hawker 75 28 Colwyn Bay Wireless College 74 35 Birth of Radar by Rex Boys 75 4 CRD150/20A Receiver 76 33 Letter 76 32 Cyfeillion Marconi 73 33 Frog Radio 77 26 Dollis Hill 76 34 HT Supply Problem by W. J. Williamson 78 36 DST100 Designer 76 33 Keith Bentley 1936-2001 by Michael O’Beirne 75 16 Early Counters 78 38 Letters 76 33 Ekco Model BV145 73 33 Letter 77 38 Electrical Safety Standards 78 39 Marconi – the Father of Radio by Ian Poole 74 22 FenMan Resonance 77 39 Letter 75 34 GEC/SEI Miniscope 76 34 Mars Calling Earth by Ron 74 4 Goodbye GBK 77 38 Letter 75 34 Help in Japanese Please 77 39 More Memories of University College Southampton HMV800 77 39 – and Professor Zepler HRO 73 33 by T. G. B. Hobbs 77 29 74 34 Nicola Tesla, Overlooked Radio Pioneer Keith Bentley Remembered 77 38 by Lorin Knight 78 4 Mystery HRO 75 35 Radio in the Victorian Era by David Clark 73 24 RAF Watton – Web Site 78 38 Radio Underground – Communications in Mines Sadir Receiver 73 33 by Brian Austin 78 28 Spontaflex Website 73 33 Rugby Radio Station by Brian Faulkner 76 14 Spying Mystery Solved? 75 32 Rugby Radio Station by S. F. Brown 77 13 T1396 Mystery Set 74 35 Sparks, Arcs and Alternators by ‘Phosphor’ 73 20 75 34 Letter 74 35 White Spiders and Red Screen Grids 78 39

38 RADIO BYGONES No. 79, October/November 2002 RESTORATION BC-696-A 73 4 A Problem RA17 by Rob Filby 77 27 Command Sets (Including SCR-274-N and AN/ARC-5 Series) Maintaining the HRO by Gerald Stancey 76 27 Part 1 73 C1-C4,4 Overhauling the Pye 39J/H by Eric Kempshall 76 3 Part 2 74 28 Restoring a Champion 784M TRF by Tony Thompson 78 8 Mk.XV 74 18 Restoring an Ekco PB505 by Tony Thompson 77 4 Rugby Radio Station 76 14 Letters 78 39 77 13 Roberts R66 with a Defective Power Unit T-15/ARC-5 to T-22/ARC-5 – See under ‘Command Sets’ by Eric Kempshall 73 12 T.1154 76 C2 Saving of a Pye Fenman by Eric Kempshall 75 12 Letter 76 32 MISCELLANEOUS Letter 77 39 HMV 1804 TV Receiver 75 24

TELEVISION References to C1, C2, C3 and C4 indicate photographs Tell Me Mr Weller No. 9: HMV 1804 75 24 appearing on the Front cover, Inside front cover, Inside back cover and Outside back cover, respectively TEST EQUIPMENT Marconi Instruments TF1417 Counter/Frequency Meter by Michael O’Beirne 77 22 SEE THE LATEST ISSUE OF RADIO BYGONES Letter 78 38 FOR PRICE AND AVAILABILITY OF Simpson 269 Multimeter by Michael O’Beirne 73 30 PAST ISSUES OF THE MAGAZINE Letter 75 35 Back issues from 2000 and 2001 are also available on CD-ROM EQUIPMENT The following references may be articles, illustrations or brief text mentions Radio Bygones, Issues Nos 73-78

RECEIVERS – Broadcast Brownie Wireless Crystal Receiver 74 C4 Bush VHF61 78 C4 Champion 784M 78 8 CosMos Crystal Receiver 74 C4 Ekco PB505 77 4,C3 Ekco U245 78 C3 Felix Crystal Set 77 2 Ferguson 621U 78 C3 Ferranti 255 78 C2 Kenmac Radio Book 78 24 Majestic 90 77 C1,16 Marconiphone P20B 78 C4 Murphy A242 78 C2 OTB ‘London Manufacturers’ Crystal Receiver 74 C4 Pye 39J/H 76 3 Pye Fenman II 75 12 Letter 76 32 Roberts R66 73 12

RECEIVERS – Communications Airmec C864 76 33 AWA 3BZ 73 16 BC-453 to BC-455 – See under ‘Command Sets’ BC-946 73 4 Command Sets (Including SCR-274-N and AN/ARC-5 Series) Part 1 73 C1-C4,4 Part 2 74 28 Eddystone EY11 75 C1,9 Marconi CRD150/20A 75 16 National HRO 76 27 Nems-Clarke 1302 76 28 Norlin SR209 76 28 R-13/ARC-5 and R-23/ARC-5 to R28/ARC-5 – See under ‘Command Sets’ R.1155 76 C2 Racal RA17 75 20 77 27 Sadir R87C 73 33 Technical Materiel Corp. AF/FRR-60V 75 C2,17 Telefunken E52 ‘Köln’ 78 C1,14 Volna-K 74 C1,C2,8

RADIONAVIGATION AI Mk.4 Night Fighter Radar 76 C1,6 H2S Radar (Type 162 Indicator) 76 C4

TEST EQUIPMENT Simpson 269 Multimeter 73 30 Rohde & Schwarz CAQ 75 C2 Marconi Instruments TF1417 75 21 77 22,C4 Letter 78 38 The bi-monthly magazine for Morse TRANSCEIVERS code enthusiasts, looking at the past, SSTR-6 77 10 present and future of the art ZC1 77 C2,34 78 19 The Nilski Partnership, The Poplars, SSTC-502 77 10 Wistanswick, Market Drayton, TRANSMITTERS Shropshire TF9 2BA. BC-430 73 4 BC-456 to BC-459 – See under ‘Command Sets’ 73 4 Phone 01630 638306. Fax 01630 638051

RADIO BYGONES No. 79, October/November 2002 39

INDEX Radio Bygones, Issues Nos. 115-126 ARTICLES and FEATURES

AERONAUTICAL CONSTRUCTION Battle of Britain Radio: The TR9 by Trevor Sanderson Medium/Long Wave Valve/IC Hybrid Receiver Part 1 121 10 by Stef Niewiadomski 126 14 Letter 124 35 Sinclair Micro-6: History and Make a Copy Part 2 122 12 by Stef Niewiadomski 121 3 DF’ing with the R1155 by Richard Shanahan 123 20 Letter 122 35

AMATEUR DOMESTIC G2DAF Receiver by Bruce Edwards 124 3 Bulova 620 Comet Repaired by Pete Roberts 116 14 Mackay 1937 Australian Expedition Radio Heathkit UXR-1 and UXR-2 Transistor Radios by Ray Robinson 115 3 by Stef Niewiadomski 119 8 National Radio NC100 by Ben Nock 123 14 Letter 120 33 Restoring a Wartime Economy Receiver AUDIO by Tony Thompson 120 26 Restoring an HMV 2304 Record Player/Radio by Tony Thompson 115 16 FAULT-FINDING Weconomy Amplifi er by K Smith 123 3 Radio Receiver Fault-Finding by Gerry O’Hara Part 1 124 29 BOOKS Part 2 125 28 British Radio Valves – the Classic Years: 1926 to 1946 Part 3 126 22 by Keith R. Thrower 120 34 Recollections of a Radio Receiver – the W6TC (SK) MILITARY Adventure 1956–2009 by Jay F. Helms 123 24 FU.G XXI Radio Set by Ben Nock 126 28 Restoring the Marconi R1155 Receiver – a Guide to Fun in the Fiords by Ben Nock 115 13 Dismantling and Rebuilding WWII Classic Letter 116 34 by Peter Holtham 122 18 Wireless for the Warrior, Compendium 1, MISCELLANY Spark to Larkspur – Wireless Sets 1910 to Abbreviations and Contractions by Geoff Arnold 118 24 1948 by Louis Meulstee 122 19 Letter 119 34 Build Your Own Valve-operated Wireless Set CLANDESTINE by Bernard Brodribb 123 28 Clandestine Communications and the Paraset Chronicles of Bheeb by Mike Rathbone 115 22 by Peter R Jensen 118 3 DF’ing with the R1155 by Richard Shanahan 123 20 Clandestine Communications and a Collection in Kent Don’t Panic! There’s a Missile on the Way by Peter R Jensen 125 8 by W.J. Williamson 119 3 Letter 126 34 Letter 121 32 HF Propagation and Clandestine Communications End-Fed Wire Aerials by Ross Bradshaw 124 28 During WWII by Brian Austin 120 16 Great Grimsby Coal, Salt & Tanning Co Ltd (the Stratton connection) by Stef Niewiadomski 126 10 COMMENT History of Denco Coils by Stef Niewiadomski Abbreviations and Contractions 119 1 Part 1 123 6 About Time Too! (Alan Turing Commemoration) 122 1 Letter 124 33 Analogue Turn Off 120 1 Part 2 124 22 Buddy or Big Brother 124 1 Letter 125 35 Home of The Code Breakers 118 1 Index to Radio Bygones Issues 103-104 115 34 ‘Mullard’ Valves 117 1 Loewe Radio – A Pioneer of the Present New Offi ces 126 1 by Tony Hopwood 120 12 Oops (Errors) 119 1 Letter 121 32 Running Out of Numbers (Internet Addresses) 121 1 Making Can Electrolytics with a Screw End Safety in Servicing 125 1 by Gary Tempest 124 14 Twenty Years of RB 123 1 Pre-World War II VHF Receivers Revisited Valve Availability/Service Data 115 1 by Dick Rollema 121 22 Website 116 1 Radio’s Early Days – Some Other Systems by Tony Hopwood 119 26 COMMUNICATIONS Short Wave and Television Magazine Eddystone ‘All Wave Four’ Receiver by Ben Nock 119 14 by Stef Niewiadomski 116 24 Letter 120 32 Telegraph Codes by Tony Hopwood 117 31 Letter 121 34 Television Pioneers by Tony Thompson 122 3 Eddystone 750 – A Quart in a Pint Pot by Peter Lankshear 117 3 MUSEUM PIECES Marconi HR22 SSB Receiver by Michael O’Beirne 116 3 Battle of Britain Sets from Trevor Sanderson’s Letters 117 34 Collection 122 C2-C4 Signalling to Submarines at ELF by Brian Austin 118 10 Broadcast Receivers from Tony Thompson’s Collection 115 C2-C4 Letter 122 34 116 C2-C4 123 C2-C4 COMPONENTS Denco Receivers from Ronnie Allwright’s Collection 124 C2 Metal Rectifi ers – Pioneers in the Semiconductor Metal Rectifi ers from Stef Niewiadomski’s Collection 120 C1-C4 Revolution by Stef Niewiadomski 120 3 Military Radios from the John Elgar-Whinney Collection 125 C2-C4 Letter 121 33 Replicas of Early Instruments Created by Component Lore by Gerry O’Hara Seb Blommaart 126 C2-C4 Valves, Part 3 115 24 Sets from Cecil Duncan’s Collection (see Letter RB125) 124 C3-C4 Letter 116 33 Sets from the Muckleburgh Collection 117 C2-C4 Early Semiconductors, Part 1 116 16 118 C2-C4 Letter 120 32 119 C2-C4 Letter 122 34 TR9 and Accessories from Trevor Sanderson’s Early Semiconductors, Part 2 117 26 Collection 121 C1-C4 Early Semiconductors, Part 3 118 30 Converting a Russian 6E5C for Use as a Y63 MUSEUMS & COLLECTIONS ‘Magic Eye’ by Gary Tempest 120 24 Radio at Muckleburgh by Tony Smith 117 8 Letter 121 33 Letter 122 34 NEWS & EVENTS Eddystone Coils and How to Identify Them 70 Years of Genius (Bletchley Park) 124 2 by Stef Niewiadomski 125 19 Bletchley Park Grant 122 2 Space Charge Valves by Stef Niewiadomski 122 20 125 2

34 RADIO BYGONES No. 127, October/November 2010 End of the Shortwaves? 115 2 Confrontation With an AVO Test Bridge English Heritage and Bletchley Park 117 2 by Douglas Postlethwaite 117 12 First of the Robot Wars 115 2 Heathkit Model VF1U by Ron 121 20 French Army Technical History 118 2 How the BC221 was Calibrated by Peter Holtham 116 28 Imperial War Museum branches 121 34 Knott Sweep Frequency Tester by Graham Gosling 124 18 ‘Mullard’ Restarts Valve Production 117 2 Macho AVO Valve Tester by Doug Postlethwaite Letter 119 34 Part 1 125 3 Museum of Communication 119 2 123 2 Passport to World Band Radio 116 2 EQUIPMENT Space Pioneer Awarded Faraday Medal 123 2 The following references may be articles, illustrations or brief text mentions READERS’ LETTERS Abbreviations 119 34 RECEIVERS – Broadcast ADSL Interference 115 30 Aerodyne Swan 118 C1,18 Aerodyne Swan 120 33 119 20 Albert Porter 120 33 Bulova 620 Comet 116 14 Albert Porter, Whiteley Electrical 121 34 Bush AC11 115 C3 All Wave Four 120 32 Buch DAC90 116 C3 AVO (Test Bridge) 119 34 Champion 784 123 C2 AVO Test Set 115 28 Coomber and Sons MW/LW Schools Radio 117 10 Letters 116 34 Cossor 494AC 115 C3 Bawdsey Manor 115 29 Denco Cadet 124 C2 Bits and Pieces 119 35 Denco DCR19 124 33 Bletchley Park 121 32 Denco DR18 124 C2 CAD and Current Flow 122 33 Ekco A104 116 C2 Clandestine Communications – SOE Radios 126 34 Ekco A144 115 C4 Denco Coils 125 35 Ekco U199 123 C3 Don’t Panic 121 32 Ekco U245 123 C4 Eddystone Items on eBay 123 34 Ever Ready Sky Queen 123 C3 Fault-fi nding 126 34 124 8 G8PUT Logbook Project 117 35 Heathkit UXR-1 and UXR-2 119 8 Heathkit UXR-1 and UXR-2 Circuit 120 33 HMV 1122 116 C3 HR22 Clarifi cation 117 34 HMV 2304 Record Player/Radio 115 16 HR22 Dates 117 35 Loewe EB100 121 32 J S-T and Radar 115 31 Marconiphone T18DA 115 C4 Marconi 558M Transmitter 115 29 Marconiphone T26A 116 C4 Metal Rectifi ers 121 33 Motorola 53H ‘T-Bird’ 125 5 Mullard Brand 119 34 Mullard MAS 281 115 C2 Mullard MAS 305 118 34 Mullard MAS 305 117 20 Museum Pieces RB124 – Correction 125 34 Murphy A192 116 C4 Mystery Cossor 115 29 Philips 200U 123 C2 Mystery Marconi Receiver 121 34 Philips 462A 122 C1,28 Mystery Set (Receiver Broadcast Type C No. 4) 117 35 Pilot Major Maestro 115 C2 118 34 Pye P75A 123 C4 118 35 RCA-2-X-61 125 3 119 35 Scott-Taggart ST300 117 9 Nano in a Jar 123 35 Sinclair Micro-6 121 3 Letter 124 34 Ultra R586 116 C2 Over and Under the Waves 122 34 Wartime Civilian Receiver (aka ‘Economy’ or ‘Utility’) 117 9 Plug for Pye 117 34 120 26 Poking Around a Crystal 124 35 R1481 Receiver 115 30 RECEIVERS – Communications Letter 116 34 Aircraft VHF Type 71/Amplifi er Type 165 124 C3 Racal RA117 – Further Thoughts 115 30 A.P. 100339 118 C2 RA117 Improvements 117 35 BC-1066-B 119 C2 Radio Jamming 115 28 Eddystone ‘All Wave Four’ 119 C1,14 Replacing Russian Valves 121 33 Eddystone 750 115 28 122 34 117 C1,3 Resistance to CAD Diagrams 120 34 Eddystone EC10 116 16 Rise of Corporate Nonentity 123 35 FU.G XXI 126 28 Rising to the Challenge of AM 122 33 G2DAF Receiver 124 3 Sinclair and WB 122 35 German 1898 Coherer (replica) 126 C2 Ten Watt Valves 121 34 German 1898 Receiver (replica) 126 C4 Thanks for TR9 Conversion Information 125 35 Magnetic Detector (replica) 126 C2 Toko Coils 126 35 Marconi HR22 116 C1,3 Transistors With Whiskers 120 32 Marconi Marine Type 31A 124 C4 122 34 Marconi 1898 Receiver (replica) 126 C4 Wattminder General 124 35 MCR1 (Biscuit Box) 125 C4,14 WB Again 123 35 National NC100 123 14 Wet Condensers 123 34 Pye Marine ‘Hamble’ 119 C2 Pye PCR 118 C4 RESTORATION R.107 117 C2 AR88 Decoupling Capacitor Replacement R.216 117 C2 by John Norman 126 33 R.1155 123 20 Bulova 620 Comet Repaired by Pete Roberts 116 14 R.1224A 118 C4 Philips 462A by Phil Moss 122 28 Siemens Funk 745E 310a 119 C3 Letter 123 34 Type 31/1 ‘Sweetheart’ 125 14 Power for a Queen by Tony Thompson 124 8 WB 1400 119 3 RCA-2-X-61 from 1954, and the IF Transformer Silver Mica Disease by Gary Tempest 125 3 AUDIO Restoring a Mullard MAS 305 by Tony Thompson 117 20 HMV 2304 Record Player/Radio 115 16 Letter 118 34 Weconomy Amplifi er 123 3 Restoring a Wartime Economy Receiver by Tony Thompson 120 26 TEST EQUIPMENT Return of the Swan by Tony Thompson AVO Test Bridge 117 12 Part 1 118 18 AVO Test Set 115 28 Part 2 119 20 AVO Valve Tester 126 C1,3 Letter 120 33 BC221 116 28 Heathkit VF1U 121 20 TEST EQUIPMENT Knott Sweep Frequency Tester 124 18 Care of Racal RA17/117s Utilising Specialist Samwell & Hutton CT-501 119 28 Test Jigs by Rob Filby 119 28 Samwell & Hutton Type 78M 119 28

RADIO BYGONES No. 127, October/November 2010 35 Racal Test Jigs for RA17/RA117 119 32 Station Radio C12 117 C4 Racal SA-97 119 28 Station Radio C42 117 C4 Precision Valve Tester Model 10-12 115 26 TR9 and Ancillaries 121 C1-4, R&S Polyskop SWOB 1 and 2 119 28 10 TR1133 122 12 TRANSCEIVERS TR1143 122 14 Abwehr Type SE 90/40 125 C2 TR1196 and Ancillaries 122 C2,C3 B2 120 16 15 Collins TCS 124 C4 US Type AR11 125 C3 Finnish LV-661 115 13 US Type SSTR1 125 C3 Finnish VREH 115 13 WS B44 Mk II 117 C3 Mackay 1937 Expedition Radio 115 3 WS (Canadian) No. 52 119 C3 Marconi CNY2 118 C2 WS No. 17 Mk.II 119 C4 Marconi Marine Kestrel III 118 C3 WS No. 31 Mk.1/1 117 C3 Mk.128 SAS Set 118 C3 WS No. 68T 119 C4 Paraset 118 3 120 16 TRANSMITTERS 125 10 Marconi 558M 115 30 ‘Polish’ Type AP4 125 C2 ‘Polish’ Type BP3 125 C4 MISCELLANEOUS Ra 190 Special Forces Set 115 12 DFG12 Goniometer 122 C4 Ra 200 Manpack Set 115 12 Magnetic Key (replica) 126 C3 Redifon GR61B 124 C3 Tuning Lamp, 1900 (replica) 126 C3 SCR522 122 C4,14 SOE Type A Mark 2 125 12 References to C1, C2, C3 and C4 indicate photographs appearing SOE Type A Mark 3 125 13 on the front cover, inside front cover, inside back cover and outside SOE Type 3 Mark 2 (B2) 125 13 back cover, respectively

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FREE READERS’ ADVERTS FOR SALE Shack Sort-Out Eddystone 840.C £120. R1155.B £100 CR150 This free service is for the use of Radio Bygones readers for their + PSU £50. Airborne Hallicrafters R1949. £80 46 set spares or private sales and wants ONLY. repair £30. AI MK10 radar indicator (1944 Mossy’s etc.) muse- ANY ADVERTISEMENTS FROM TRADERS, OR FROM um item – offers. Prefer buyers view/collect, can deliver in East APPARENT TRADERS (e.g. THOSE WHO SUBMIT LONG Midlands, contact C. Baker Tel: 01332 700222 (Derby). LISTS OF ITEMS ON A REGULAR BASIS), WILL BE REJECTED. Replacement meter for the AVO CT160 valve tester. Made by Simpson in the USA, this meter has the correct scale, FSD and 1. WRITE YOUR ADVERT CLEARLY AND LEGIBLY prefereably in block letters or typewritten. internal resistance. It is moulded in black plastic and fi ts in the square hole in the CT160 panel with nuts and washers. Con- 2. USE NO MORE THAN 45 WORDS, including a contact name nections to two threaded studs. Price £175 post paid anywhere, and telephone number, and prefereably your address as well. or part or whole swap for new-old-stock valves. Contact Phil 3. KEEP ALL ADVERTS COMPLETELY SEPARATE FROM Taylor, 3 Silver Lane, Billingshurst, W. Sussex RH14 9RP. Tel: OTHER CORRESPONDENCE. 01403 786250 4. KEEP ‘WANTED’ AND ‘FOR SALE’ ITEMS ON SEPARATE Vintage AVO electronic test meter CT38 with leads and EHT SHEETS. probe, reasonable condition. £35.00 O.N.O. Marconi CT2300B 5. If you wish to you can SEND A COLOUR PRINT PHOTO- modulation meter, reads depth and deviation to 1200MHz, good GRAPH (or JPG fi le) of ONE ITEM in your advert, taken against condition, with manual. £45 O.N.O. carriage at cost, please en- a plain background. The photo must be in focus, show the whole quire. Contact [email protected] (Southport) Tel: 07960 of the equipment with a little background all around it and must be marked with your name and address, and the make and model of 931169. the equipment on the back. World Radio and TV handbook (1980) 34th edition published NOTE: We cannot return these photos, nor can we guarantee to by Billboard £7 + £3 P&P. Contact Norman Tel: 01772 466578 publish them, but we will endeavour to use all photos that meet or Mob: 07751 710119. 8 Hendon Place, Preston, PR2 1UA. our requirements. We cannot accept photos showing more than one item of equipment, nor can we accept transparencies or photocopies. WANTED Circuit diagram for a 1921-1926 Volcan 2-valve radio set, 6. Every ad must have your FULL NAME AND ADDRESS attached, even if you do not want them published in full. made by J.G. Graves. Tel: Mr P. Ward 01425 475445 (Ringwood, Hants). 7. SEND YOUR ADVERTISEMENT TO: Radio Bygones, Wimborne Publishing Ltd.,113 Lynwood Drive, Merley, Wimborne, Dorset Hivac valves Y230, Z220. Marconi-Osram LS6A, pip top ver- BH21 1UU, England. MARKING EACH PAGE ‘RB READERS’ sion. Ferranti meters, 3½inch fl ush, 10 and 250mA DC. West- ADVERT’. Email [email protected] inghouse meter, 3½inch fl ush, the kind with the slightly frosted Any advertisements not meeting these requirements may dial glass, 200V or 250V DC. Denco coils, valve use, DP, range be rejected or modifi ed 2 and range 5 blue and green, B9A plug-in. Connectors for Wear- ite ‘Unida’ coil, ganged unit with built-in wavechange switch, The closing date for receipt of adverts to appear in out next issue, due out on 26 November 2010, is 28 October 2010 13 terminals around the base. Phil Taylor, 3 Silver Lane, Bill- ingshurst, W. Sussex, RH14 9RP. Tel: 01403 786250.

36 RADIO BYGONES No. 127, October/November 2010