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 . 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 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 Electrotherma