SPECIALLY DESIGNED PRIVILEGE "1"" LIGHTWEIGHTLIGHTWEIBHI CASE AND DiAL www.americanradiohistory.com Ìl PRACTICAL WIRELESS November, 1960 R.F. UNIT CONVERTORS Undoubtedly the most useful R.F.24 R.F.25 ß.F.27 Govt. surplus units ever Frequency 20 -30 Frequency 40-50 Frequency 65-85 Mc /s. released. The R.F. units will Mc 8. switched Mc /s. switched slow motion illumina- extend the frequency range tuning, complete tuning. complete ted tuning. complete with 3 valves and with 3 valves and with 3 valves and of your receiver to enable circuit. circuit. circuit. you to receive amateur. TV 29/6 and V.H.F. stations. P.& P. 3/6 P. & P. 3/6 P. & P. 3/6 HI -FI HEADP HONES SPARE These miniature HI- VALVE FI phones NEW: K I T use high Here's a quality SUPER gift for all permanent MINIATURE 38 and 18 magnetic EARPHONE Set own- speakers ers! Case with regu- FOR TRANSISTOR contain - lated voice CIRCUITS coil. The ARP12 & soft rubber Here is a really sensitive 1 ATP4 ear moulds give correct spacing dynamic earphone of excep- valves. OU 1 for optimum acoustic load. Each tionally fine quality. This Only 10/ -. unit has a built-in miniature HI- lightweight miniature ear- P. &P.2/6. FI transformer to ensure the piece is convenient and U.S.A. WHIP AERIALS. 12ft. 0 finest music and voice reproduc- comfortable to wear. The 12/8. P. & P. 2/6. tion. Supplied free is a small practically invisible cord Is 1 mA METER, lin. round, 17'8. transformer unit which steps connected to the earphone. Provides clear reproduction of P. & P. 1/6. impedance up to 4000 ohms. music as well as speech. Fully Guaranteed and supplied CRYSTAL DIODES 8/- per doz. Only 15/ -. P. & P. 26. complete with transparent ear insert. 3 feet cord, sub- P. & P. 1 / -. DII('ROPHONES, BRAND miniature plug and socket. NEW. Throat magnetic 4/8: Model CR.5 Crystal Earpiece, high imp. .. 81- P. &P. ACCUMULA- Throat carbon 3 8: No. 8 carbon Model MR.4 Magnetic Earpiece, low imp. .. 7/- 1/- TORS. 2 volts 16 iwith switch 6/8; No. 7 moving A.H. (unspiilable). icoil 718. Tannoy power mikes Ideal for 6 and 12 only 51 -. Crystal mike 22/8. WIRELESS SET No. 19 MK. II volts supply. etc. HOOVER ROTARY Incorporates "A" Set Brand new. Original TRANSFORMERS -TX /RX covering 2-8 cartons. Size 41n. x 12 v. Input. 500 v. Mc /s (37.5 -150 metres). 71n. x lin. 5/8 each. output at 65 mA, "B" Set -VHF TX /RX P. & P. 1/6. 3 for 15/ -. or 6v Input. 250 covering 230 -240 Mc /s. P. & P. 3/6. 6 for output at 75 (1.2-1.3 metres) and 276. P. & P. 5/ , mA. intercom amplifier. PRINTED CIRCUIT KIT."" Only Complete with 15 Easily and quickly you can make valves, 500 microamp miniature professional printed 10/6 check and tuning. circuits. Complete with Illus- EACH meter, circuit and instruction book. trated manual, 19/8. P. & P. 116. tl P. & P. 2/ -. In used condition. 851 -. Carr. 10 -. POCKET MULTI- METER. CONTROL BOX B.0 692,# BRAND NEW. 2.500 o.p.v. Complete Multi range 6/30/190/300/1,200 v. PORTABLE push -but- k A.C., ditto D.C. 0-1E., 0-1 megohm : ton con 400 Mloro-A.. 12 mA. 300 mA -00 TRANS /RECEIVER No. 18 trol box. U'Y r#R. to +64 db 5 ranges; 310. x 4iln. x 4 position 141n. Large clear dial. Leads A self -contained Trans /Receiver for on/oft l 41 supplied. Our Price 70/ -. y &p 2/8. Telephone and C.W. Range approx. wandith dual COMPLETE HEADPHONE do 10 miles. Freq.: 6-9 Mc /s. (50 -33.3 coloured MICROPHONE metres). Valve line -up: 3 ARP -12. Indicators ASSEMBLY. A 2 AR-8. 1 ATP4. Complete with aerial. for instant must for every H.T. and L.T. meter and all acces- channel check. In black constructor and sories. Weight 20 lbs. Size 8 x 10 x 171n. crackle case 54in. x 31ín. x Hin. Ham ", consists Only 80/ -. Carr. 10/ -. price 5/- each. P. & P., of moving coil 1/8. Two for 8 / -. P. & P 2:6. padded head- VARIABLE TRANSFORMERS R phones and TWO TRANSISTOR POCKET RADIO nI "press to talk" microphone. with Miniature Speaker voltaputge ZB v, con- 1PRPRECISION /4% RESISTORS Anyone can build it! tinuously Manufactured by Electrothermal, variable we offer the following values: output 100K. 400K. 500K. all ±4% 1 watt, f r o m 1/9 each: 20 /- per dozen. 0 -260 v. POCKET VOLT TEST METER Supplied complete. Two D.C. ranges: Model B.5 0-250 v. and 0- 25 Current v. Complete This powerful pocket radio gives rating 5 with test prods. reception over the entire broadcast amps. 29. and leath er case. band. Complete with all parts, inclu- Mode1B.10 Very limited ding 2 transistors, exclusive ferrite Current rating 10 amps. 218.5.0 quantity. Only od. miniature speaker tuning condenser, plastic case, Model B.20. 12/6. P. &P.16. wiring diagram. and step by step instructions. Current rating 20 amps. 232.10.0 Size 41 x 3 x tins. ONLY 27/6. P. &P. 1/6. Battery 1/- extra. ALL FULLY GUARANTEED. POLICE - AIRCRAFT - HAM RECEIVER 1392 15 VALVE SUPERHET. Frequency 95 -150 Mc/s (2 to 3 metres). Valve line up: 1st and 2nd R.F. Amp. VR.136 (EF.54), 1st Local Oscillator VR.65 PRICE COMPLETE (SP.61), 2 Oscillator Multipliers VR.136 (EF.54), 3 Amp. VR.53 (EF.39). I.F. s ONLY , A.G.C. 6Q7. Output 6,75. Muting VR.92 (EA.50). Noise Limiter VR.92 (EA.50). B.F.O. 6J7. Mixer VR.136 (EF.54). De Mod. 6Q7. Slow motion tuning, normally crystal controlled, or tuneable over 95- £6.5.0 150 Mc/s. Power supply required: 240 -250 volts at 80 mA, 6.3 volts at 4 amps. Size 19 x 101n. Standard Rack Mounting. Carriage 15/- Callers. 87 TOTTENHAM COURT ROAD, LONDON. R'.1 Mail Orders. (DEPT. P), 32a COPTIC STREET, LONDON. W.C.1 Telephone: MUSeum 9607 www.americanradiohistory.com November, 1960 PRACTICAL WIRELESS 561 Tel: Mitcham 6201 All Valves Brand New Open Daily to Callers `2N and Fully Guaranteed 211 STREATHAM ROAD, MITCHAM, SURREY Special 24 Hour Express Mail Order Service 1 1 17'6 OZ4 5/9 6CH6 12/- 10C2 27 10 32 13'6 CCH35 21/- ECL83 12/6 HL23DD PCL82 6 U251 10/6 PCL83 12'6 U2BI 20 - A5 6'- 6E5GT 10/- 10FI 26 2 35A5 10:6 CL4 12/6 ECH82 12/6 17,6 U282 22 - A7 14/6 691 15/6 10F3 17 6 35L6GT 10 6 CL33 18/6 EF9 21/- HL4I 12/6 PENA4 PENB4 17/6 U301 22 6 D5 14/- 6F6 6/9 10F9 12 6 35W4 8'- CYI 15/9 EF22 17/6 HL4I DD 13/6 PEN4DD U329 17 6 6F7 15/- IOLD3 12 6 35Z3 10'- CY3I 15/9 EF36 7/6 22/6 U339 19 - H5 10/6 6912 4/9 15 - 35Z4 7 6 D41 12/6 EF37 8/6 HL42DD IOLDII 6 6F13 (7/6 35Z5 9 6 D42 12'6 EF37A 8/6 13/6 PL33 18/6 U403 11 L4 6'. 10P13 21 - 10¡- LNS 4'6 6914 17/6 40SUA 15i- D63 3/6 EF39 4/- HY90 8/- PL38 23'9 U404 IOP14 20- U801 29/- N5 10/6 6F15 14/9 415TH 23/6 D77 5/6 EF40 1W4/35010/- PL81 14 9 IID3 176 U4020 15/6 RS 9/- 6F17 12/. 42 I5/- DI52 6- EF4I 9/3 IW4/50010/- PL82 8'- IIDS 17/6 UABCBO 8'- S4 8/6 6F33 5/6 43 15/- DAC32 10/6 AF42 10/6 KBC32 9/6 PL83 IO 6 12A6 6/6 UAF42 9 6 S5 9/- 6H6 2/6 5005 15/- DAF9I 7/6 EF50(E) 3'6 KF35 8/6 PL820 21'- 12AH8 I0/- 9 - T4 4/- 615GT 4/6 50CD6G DF33 10/6 EF50(A) 4/- KL32 10/6 PM2A 12/6 UB41 2AT6 9,'- UBC41 9 6 U5 10,/. 6J6 7/6 21/- 4/- EF80 6/. KLL32 11/6 PM2HL I4/- 2AT7 8/- 0991 UBF80 9 6 2021 8/6 617GT 9/6 50L6GT 9/- DF92 7/- EF85 6/6 KL35 9/6 PM22A 13/6 2AU7 9'- KT2 7/6 UBF89 8/6 5/- 6K7G 3'- 61BT 17'6 EF86 I I/- PM24M 21/6 2X2 2AX7 9 6 0996 9/6 UCC85 10/- 3A5 12,6 6K7GT 10/6 6ISPT 17/6 DF97 9/6 EF89 10/- KT32 I0/- PM202 16,/- 211,46 9 10/- UCH42 91- 3D6 14/6 6K8GT 12/6 62BT 17/6 DH63 10/- 4/9 KT33C PY31 16/6 28E6 9 6 EF91 KT36 28/6 UCH81 9'- 3Q4 8/- 6K25 19/6 75 12/6 DH76 7/6 EF92 5/- PY32 15/6 2E1 17 6 KT4I 22/6 UCL82 12'6 305 10/6 6L1 15/6 77 12/6 8/3 EF93 7/6 PY80 8/- 217GT 9 6 DH77 KT44 13/6 UCL83 13 6 354 8/. 6L6 7/6 73 12/6 107 13/6 EF95 15/- PY81 7/6 2K7GT 8 6 DH KISS 22/6 UF4I 9 - 3V4 9/- 6L18 12/6 80 10/- 12/6 PY82 8/- 2K8GT 12 6 DH719 7/6 EL3I KT61 18/6 UF42 11 6 5R4GT 9/- 6L19 21/. 85A2 12/6 91- EL32 5r- PY83 8/6 2Q7GT 8 6 DK9I KT63 8/6 UF80 9/- 5U4G 4/6 6L34 10/- 150B2 12/6 12,'6 25A7 8'- DK92 9/6 EL33 KT66 17/6 PZ30 18/6 UM 9/- 6/30L2 10/- 15083 15/- DK96 10/- QP25 14/6 2SC7 8,!- EL35 12/6 KT7I UP89 8/- 5Y3GT 8/6 6L03 9/6 QP230 17/6 25G7 8/6 DL33 9/- EL37 18/6 KT74 12/6 UL41 9- 5Z3 10/- 6LD20 15/6 7/6 3038T OL35 12/6 EL38 23/9 KT76 12/6 UL44 24 6 SZ4G 10/- 6N7GT 7/6 2SH7 4/- 21/- 2517 4/- DL92 8/6 EL41 10/6 KTIOI 25/- R 01 UL46 21/- 6A7 18/6 6M1 10/6 305 7/6 DL94 9/- EL42 10/- R19 19/6 UL84 9/6 10/- 2SK7 8/- KTW6I 7/6 6A8 6M2 10/6 328 7/6 DL96 9/6 EL8I 14/9 SD6 8/6 UU6 20/11 2SQ7 11 6 KTW62 7/6 6AB8 9/- 6P1 17/6 329 7'6 2/- EL84 7/- SP4 14/6 15/- 17 6 EA50 KTW63 7/6 UU7 6A18 9/6 19/6 25N7 7 5P41 3/6 6P25 15'- 807 6 EABC80 6/- EL85 10./6 KTZ4I 8/- UU8 26/- 6AK5 8r- 6P28 2é/- 2Z3 EAC9I 7/6 SP42 12/6 6AK8 7/6 3D3 126 955 EL90 8/6 KTZ63 I0/- UY21 15/6 6Q7GT 10/6 5763 7 6 EAF42 10/- EL9I 5/- 4/9 SP61 3/6 UY41 7/6 6AL5 6/- 4H7 12 6 L63 6SA7GT 7/6 9002 7 6 EB4I 7/6 EM80 IO/- IS/- T41 22/6 UY85 7/6 6AM5 S/- 4R7 12 6 LN309 6SG7 7/6 9003 7/6 EB91 EM81 IO/- TDD4 17/6 VP2B 17/6 4/- 21 5/- LZ319 12/6 6AM6 65H7 6/6 457 TDD 13C VP4B 17/6 7/6 AC4/PEN E8C33 4/- EY8I 10/6 MH4 8/6 6AN5 6517 5/6 17 6 25/- EY84 10/6 17/6 W17 8/6 6AQ5 8/3 5D2 23'9 EBC41 9/6 MHD4 17/6 6510 7/6 AC5/ PEN EBF80 9/6 EY86 9/6 MHL I0/- TH41 23/9 W76 7/- 6AQ8 9/3 6SL7GT 6'6 9AQ5 10'6 22/6 TP22 17/6 W77 5/- 6AT6 8/3 9BG6G24'4 EBF89 9/.