Ng

This system has been in use in the authors amplifier for over three years with excellent results. It also prevents diode noise generation in the amplifier as well- Of course, many other combinations are possible with this relay using additional contacts, such as shorting the receiver input and any other switching frills which one might wish to incorporate. Thirdly, change an existing Eimac SK 500 socket for their new and improved SK 510. It is a very small investment which will pay off in...

Newtronics Corporation

3455 Vega Avenue Cleveland, Ohio 44113 teni such as hetrodyning the rf from the camera to the UHF band, modulating a single tube parallel bar transmitter, or it can be a more expensive unit running crystal control and much more power, I he first method, hetrodyning the camera rf, is verv well described by W1CUT in September 1962 QST, Further on in this article, a simple way to put video on the air will be described, This uses a single tube oscillator as the transmitter, A tripler-amplifier for...

J J Glass Electronics

1624 SOUTH MAIN STREET LOS ANGELES 15, CALIFORNIA Telephone RI-91179 Over the June 5-6th holidays there will be a very, very big German TIam Convention in Berlin held by DAKG The mayor of Berlin (and possibly the next Chancellor of Germany ) Willy Brandt will be sponsoring the event. We will have about 2000 hams in our city. Delegations from England, Sweden and Switzerland have already announced their participation, There will be a grand opening at the largest studio hall of Radio Free Berlin,...

Silicon Diodes

2 Amp 1,000 P1V 1.00 each 12 for 10.00 2N35 General Purpose transistor. We bot up a large batch of them and after checking random samples find they are of good quality. Long leads. Bag of 20 only 1.00. Meshna's new Winter catalog now ready. Send 20c for yours before they are all gone.

Send For Rohn Tower Handbook

ONLY 1 00 posted special to readers of this magazine , Nearest source of supply sent on request. Representatives world-wide to serve you. Write today to V. odd's Largest EXCLUSIVE Manufacturer of Towers designers, engineerst and in sin Hers of complete communication tower systems. before it came out and asked ii I wanted him to get any extra copies ot the stamp. 1 enthusiastically told him to stock up heavily for us. Then the thing came out. Very depressing. A pointless design indicative of...

Rg

C.2- .001 mfd, 1000 vdc ceramic disc C3, CA -30 inferU 500 vdc tubular electrolytic C5-C8 20 m d, 450 v lt ic tubular electrolytic CKI-CR 13 1N547, 00 VIV 750 ma silicon rectifier CR 14, CR 15- IN3039. 62 v, I w zcncr diode Ml 0-1 kv voltmeter, 1 ma movement TX 00 vet 300 ma, 6.3 vac 6 amps, 6,3 vac 6 amps T2 6,3 vac 1 amp fully to fu l wave bridge supplies, since no filament transformers are needed. This will give the required voltage output, Q. Using a full wave bridge supply for the high...

Qro

Now, with all this in mind, it is obvious that a single dual4node such as a 12ATT should handle the duty for a full kw or more. The cathode input to the switch presents a relatively high impedance to the low-impedance 50 to 100 ohms transmission line. Therefore, very little rf power is absorbed by the switch from the feed line and most of this current flows through the cathode resistor and choke. In actual practice, a single 12AT7 has been handling a full kw at W4MLE for nearly a year. The only...

Pnp Power Transistor

Terrific Buy for the ham, experimenter, and commercial user. PNP 15 amp, 80 volt power transistor, guaranteed OK and up to specs. 2N174 can be used in almost all commercial 2 way radios as well as ship-shore radio as power transistor and in most cases will be even better than original equipment. Most of these we have are made to JAN SPECS. This is also a good one for transistorized ignition systems. 2N174 1.50 ea.

Teflon Tape

Of course, a Helix CoiJ sounds a lot more impressive than a strap coil. Suit yourself. The cir cult of i ig. 2 lends itself well to this cheek, LI has only two major connections, except for CI and C2 which are easily soldered on. As an alternative, J2 or J1 also, see also the UHF tuners may feed a loop coupling to LL In fact, for best tuning range, use coupling loops. See Fig. 4. As an example of wire versus strap, LI was made of three turns of heavy copper...

Columbia Electronics

4365 WEST PICO BLVD., LOS AMGELES 19, CALIF, Signal Corps Technicar Manuals, Instruction books and other material pertaining to signal corp equipment and etc. Manuals are New or Uke new. Ail are shipped postpaid USA. If faster means desired, add additional money to cover eost. All shipped parce post otherwise. Duo to size and weight of some manuals, a higher price is asked. TM I -2234 Teletypewriter TT-4 TG SI-50 TM J1-352 Printer TG-7-7-A and Teletypewriters TG-T-B and TG-37-B SL50 TM n-2230...

Cgs Radioamateur

H CB-1 Air Seniry Shorty - 23 overalf with IB whip top loaded fiberglass complete wrth spring, mount and 12 ft. coa cable For auto CB use g C8S-31 1 mounts on fop, fender or trunk lid. 52 ohms, 60 wat s, RG 58 or equiv., 1.5 mc minr, 1J to I at resonant frequency- For auto, plane or boat. C FG-I03 universal 103 24 thread base fitlini Not Shown 100 1035 Stainless Steel IC3 with W stud threaded to fif all mounts. D 5R-6QQ-t T base station monopoEe for 1 I meters Radiating and ground plane...

Receivers

Any quantity, any condition Top prices paid. Call collect SG93 U RM75 4-220mc Sie amp Sweep Gen, W Xtal, Mod, EX G7.75 Manuals i4 for KGi 3 fPhtlco Com, Type II 1147 EX 4,75 T6I AXT2 TV Xmittr 250-385roc. Lite ATJ-ATK, NEW 17 50 R65 APNif Loran Receiver and Indicator. W Lens EX 57.00 R23 AFEC5 190-550T kc. The Q amp -er GOOD 11.75 MT7A Mounting for one ARrfi Heoetver EX 1,50 SA325 U Coaxial Relay. SPIT. W S8 VDC Motor EX 2,75 UG2I0 U Coaxial Plugs for SA325 Relay, used----EX 3 1.00 CLfll 9A...

Navigational Equipment

Vintage Aircraft Inverter

Determine exact geographic position of your boat or plane, Indicator and receivet complete with all tubes and crystal. INDICATOR IO-GB APN-4, and RECEIVER R-9B APN-4, complete with tubes, Esc, Used. . . 69.50 , NEW APN-4 A Receiver-Indicator as above, changed to operate same as APN4-B for improved performance . .NEW SfiS.50 Shock Mount for above 2.95 INVERTER POWER SUPPLY for above APN-4. INPUT 24 V DC. OUTPUT 115 T AC, SQO cycles. Like New 22,50 12-Volt Inverter Power Supply for above APN-4....

Schematic Diagrams

Rtty Konverter Tubes

For most equipment on this page, each Please Include 25 Deposit with order Balance C.O.D., or Remittance in Full. 50c Handling Charge on all orders under 5.00, AH shipments F.O-B, Our Warehouse, N.Y.C. All Merchandise subject to Prior Sale and Price Change. Telephone CO 7-4605 75-G Leonord St, New York 13, N. Y. Lafayette Radio Electronics Corporation lias introduced a highly selective mechanical filter for use in amateur, ew and ssl communications receivers. With the influx of new stations and...

Info

1700 Piv 1200 Rms 750 Ma 51.20 lt P gt . Same 1100 Piv'770 Rms 75e 16 n 3 Kv 2100 Rms 200 Ma SJ.flO PNP lOOWatt 15 Amp Hi Power T036 Case 2N44I. 442. 277. 278. DS50I up to 50 Volts VCBO SL25 5 for S5, 2N278, 443, 174 UP to 80V S3 2 for 5. PNP 30 Watt, 2Nt55, 156. 235, 242, 254. 255, 256, 257, 301, 392, 35c 4 for L _ . PNP 2N670 300Mw 35c 4 for PNP 2N671 1 Watt 50c 3 for PNP 25W TO 2N538. 539T 540. 2 for S 2N f 038 6 51, 1039 4 L 1040 SI PNP 105 SIGNAL up to 350MW 25 2 N f 046 1.40 ft. 3 t 4, 2...

Sidewinder Specifications

NEW GONSET SIDEWINDER 6 METER SSB-AM-CW TRANSCEIVER The new Gonset Model 91 OA Sidewinder offers coverage of the entire 6 meter band in 1 mc segments. Like its mate the Model 900A 2 meter Sidewinder this ultra-compact transceiver features all-transistor receiver and power supply and partially transistorized transmitter exccpt mixer, driver, and final stages . Designed for mobile or fixed communications, the unit operates with separate AC shown above or DC power supplies. Spurious Suppression...

Telrex Laboratories

Last month we presented the con struction details and schematic for this transmitter. Now here are step by step instructions for tuning and adjusting it. Start by placing spot-operate switch on front panel in spot position. Connect negative terminal of YTVM to 100K grid-leak of 6EB8 triode stage. Insert crystal between S and 8.222 mc in socket. Tune LI and L4 for maximum YTVM indication. Then remove power and disconnect 100 ohm resistor in second 6360 B circuit from 300-volt line. Connect VTYM...