Surplus For Sale

ARC 5 Modulators MD-7-Clean w tubes, dyna, . 7.95 BC 456-Cican w tube , dyna*. 3,95 Multi-Tester 1-176 AC DC-Ohms-Volts-Amps with new batteries, test Noise cancelling carbon mike CW-51094. Hand held press against lip to talk with cable and PL-68* Cheapest former surpJus price 15. Brand new, boxed . . . *, 1* * . * * * 3*9 Headphones H-5B U - 10,000 ohms, w cable PL-55 New BC-T3Q6 Transceiver - 3800 - 6500 kc, new w all tubes RCA Geiger Counter WF15A - list price 750. 10 geiger tubes. Use from...

Records

However, hiss can be minimized by proper circuit design. The low-noise circuits you read about for both rf and hi-fi uses are actually * low-hiss11 circuits. Naturally, the less hiss present the more amplification you can use. However, this fact only becomes important at frequencies above about 50 me, since at lower frequencies sputter and crash are much more prevalent and mask out any hiss which the receiver may contribute. For a complete discussion of low-hiss rf circuitry, see the technical...

Rca

Answer to the Articles I would like to see blank in the June issue of 73. This should answer the question posed by many writers What should I write about The ultimate conversion of the HQ-129X. VHF construction- RTTY info. Halos by K2TKN. Simple test and measuring inst. HF & UHF antenna articles, VHF transmitter & receiver construction. VHF articles, Simple VHF construction, 88 108 mc FM tuner, Surplus conversions and data. Transistor equipment- Simple electronic key with no relays, i he...

Laboratories

TABOR, NEW JERSEY OAkwood 7-6800 ' 379 East I 5th Street Brooklyn 30, K Y. Frequency Deviation Reinar+Z K6BJ 6 a no. iter little gadget to build from the brain of one of the top hams of all time, Noise Limtter Sowers W3BUL 8 tor the car. 1 ransisturizeit, printed circuited, and the board is available, SS8 vs AM Reed KMXY 2 Year i> y year count f band occupancy by SSU and AM. (SSB is winning) Square Antenna Be W8GUE 6 14 Ihe Bi-Sqtiare is easy to build and works out...

Apx-tmo As A Transmitter

GRC, VRC, TS Equip, & parts TUBES, etc, TOP PRICES PAID Whotdo you have MOBILE RADIOTELEPHGNE 150-170 mc FM. 6v ri uK Ou.yu 2j. Consist or Transmitter. Hcteivtr, Anttrnji & count pt ng cable, COMMUNICATIONS RECEIVER, 4-CHAN- 90 to 9050 Kc. XLNT CONDITION 17.95 RAX-2 1.5-fl mc 14.95 RAX-3 7-27 mc 19,95 APX- TRANSMITTER-RECEIVER SPECTACULAR 1215 Mc LESS TUBES 3 95 Complete conversion data 1.50 ARC-5 VHF 4 UHF EQUIPMENT SPECIALS R-28 ARC-5 RECEIVER -ISH Mc 4-chamieli. Crystal...

J J Candee Co

509 No, Victory Blvd., Burbanfc, Calif. Phone Victoria 9-2411 with four ohm input from the receiver, it will work much better with a matching transformer of four ohms to twenty thousand ohms into the converter. The output of the converter is placed in series with the local loop. The output transistor acts as a switch, or relay, and does away with the polar relay.

Receiver

Altogktheu too seldom is a new receiver introduced that is really state-of-the-art, The Drake 2-B receiver is an improvement of the 2-A, which was a modernization of the original 1-A model. All three incorporate many very line principles of receiver design. Physically the receiver is quite small. Its dimensions are 12'' long, 7'' high and 9 deep. Weighing only 14,5 pounds this receiver only uses 40 watts from the power line. This is significant since there is much less heat dissipated in this...

Go First Class On

50 watts input, fully neutralized Uses inexpensive 8 nic xtals or YFO Plate modulated for efficiency and punch Input for crystal or carbon microphone TVl-proofed even in Channel 2 fringe area All hard parts mounted (over 100) Speech clipping & limiting for max modulation tW-51 Deluxe kit, less tubes & xtol --------S57.50 LW-51 Deluxe kit, with tubes & ony xtol, 69,50 LW-51 Deluxe Icit, wired & tested . 84.50 Ship weight 7 lbs. 77c Eost Coast 1.59 Western LW-72 AC Power Supply for...

Each

The following Cfass D1 Citizen Band frenuenci in itoefc frequencies listed in megacycles JG.965, 26.975, 26,985. 27 005, 27.015, 27.025, 27,035, 27.055, 27. G5, 27,075, 27,0fl5, 27, J 05, 2 7 J15, 27.125, 27.135, 27,155, 27,165, 27.175, 27JB5, 27.205, 27.2 fST 27.225. Matched crystal for CJlobe, Conset, Citl-Fona and HaiU- crafters tTniia , , 5,90 iter set Specify equipment make. RADIO CONTROL CRYSTALS IN HC6 U HOLDERS Specify frequency, W Pin spacitii , . , r ln dUmeier .05 .003 pin diameter,...

Selectivity Curves

Period of time before maximum sensitivity is restored A terminal is provided on the rear of the chassis to provide additional capacitance to increase the decay period. In the STBY position, the STDBY-RCV switch permits full negative bias voltage to be provided to the AVC controlled circuits thus muting the receiver. Access is provided at the rear of the chassis so that this function can be provided by an external circuit such as a switch or relay. Post detector amplification of the audio signal...

Noise Limiter

Thomas CT Sowers W3BUL 47 Bethlehem Pike Col mar, Pennsylvania After being mobile for several months we , had the misfortune of having to change cars as the 1952 Pontiac, which we used for mobile, was beginning to fall apart. The mobile gear was moved from the Pontiac to a 1953 Studebaker. This gear included a TNS limiter which was installed in the Pontiac radio to reduce ignition noise. It was a great disappointment after all the labor involved in transferring the equipment from one car to the...

Element

EBCO Sky Sweep ond EBCO Sky Sweeper Special used TOO i EBCO Sky Sweep ond EBCO Sky Sweeper Special used TOO i EBCO ASTOUNDS THE EXPERTS works out of mountain vol eys where others cou'd not be heard Monon-gahela and Susquehana Valley VHF Trials , EBCO OUTPERFORMS THEM ALL used almost ex clusively by Motor City Mobile Club of Detroit and by many others who have tested them all. Neat Compact Non-Monstrous No Maintenance Built for Life sionally Stable Non-Breakable Even Order thru your tocol deafer...

Combination Yagi Antenna

Heavy Duty Square Aluminum Boom, 10 Ft. Long All Elements are Sieeve Reinforced And Completely Pre-assembled With Snap-Out Lock-Tite Brackets Boom Suspension Rods Are Supplied Completely Pre-assembfed. Ready To Be Snapped Into Upper End Of Mast Folded Dipole Plus Special Phasmg Stub A6 4 6 Meier 4 Element Amateuj Net 17.16 Stacking Kit AS-6 2.19 A2 10 2 Meter 10 Element Amateur Net 11.88 Stacking Kit AS-2 1.83 A6 4 6 Meier 4 Element Amateuj Net 17.16 Stacking Kit AS-6 2.19 Amateur Net Sll S3...

Parts Notes

All parts are available from your local scrap box, or your local dealer. The transistors and diodes are Texas Instruments, Inc., obtainable at your local TI distributor. These silicon transistors are the industrial type and do a real good job for a reasonable price The toroids, or loading coils can be obtained from several places other than those listed in the parts list. Jack Pitts W6CQK, 1307 Alemeda, Redwood City, California, can supply a complete plug-in filter unit for 3.50 each, postpaid....

Seco Tube Testers

GRID CJRCUIT TUBE TESTER full TV tube coverage MODEL GCT-9 GRJD CIRCUIT AND TUBE MERJT TESTER fu f I T V tu bt coverage- Model 78 69.50 net COMPLETE TUBE TESTER tests Dy-nsrnjc Mutual Conductance, Cathode Emission ari Tube Mefit inclu l Gr d Circuit Teal MODEL 107 5139.50 net Model 500 Wired and factory tested 29.95 Net Model 500 Wired and factory tested 29.95 Net Complete with all necessary cables nd adaptors Model 510- 46.95 Net Complete with all necessary cables nd adaptors Model 510- 46.95...