Communications Receiver Bargains

BC453B 190-550 kc C-tubfl superhet w 95 kc IF st Idea as long-wave revr, as tunable IF & as 2nd convert. W all data. CHECKED ELECTRICALLY, Grtd. OK 9 lbs. Cl Qq fob Los Angeles Same, in handsome cabinet w pwr sply. spkr. tf 37 Cfj etc., ready to use, is our QX-535. 19 lbs. t*J J RBSr Navy's pride 2-20 mc 14-tube superhet has voice filter for low noise, ear-saving AGC, high sens. & select. IF is 1255 k tm Checker aligned, w pwr sply, cords, tech data ready to use, fob Charleston* S, C. or...

Communications

SENSATIONAL BARGAIN ICS TRANSMITTERS. RECEIVERS, AND ACCESSORIES TCS TRANSMITTER. Famous work-hor * of the Navy, rueaed. ifficient relliible. Delivers watt* phone, 40 watts C V In 15UUKC to 12.0 MC range. Incorporates YFO or 4-cryitat controlled channels. Excellent for mobile or fixed station use. Complete whh tubes, I sed-Very t ican condition, Shpi, wt. GO lbs. All Accessories estra. EACH, not tested at this low price 39,95 TCS RECEIVER, companion to above. 1.5 to 12.0 MC1 in 3-hands....

Test Equipment

X Hand Itadar Test Set to find frequency e C trum of around 10,000 MC, Excellent condition 34.50 each Intervoliimeter Tester, can be oseci for testing camera shutters or flash synrhronination of equipment. Good condition, . Tr 27.50 TS-170 Oscillator, used to check receiver sensitivity and audio channels 332 to 338 MC, can be con-' verted for other uses, new, only 9.95 TS-13 Signal Generator with self contained wave meter and power monitor ffir X-Band use, contains 723 AH...

Jo

HUM il. 55 ohms 1500V tost Interstagt) Transf. PrL 20K ohms CT See. ISOK & Res. 1000 ohm SOW with slider Trans. Mica cap, ,00045 5KV r -50 Trans, Mica Cap. ,000375 5KV 50 Trans. Mica cap .00075 5KV . _ . .50 Trans. Mica cap, .0012 5KV 50 Trans. Mica cap. .0002 Trans. MUa cap. .015 1500V . .35 .0004 Mica cap. 2500V. working type 9-CD . . J5 .0001 Mica cap. 2500V. working typo Hi. -is Mica cap, 1200V. working type H .35 Cap. 500mfd. 25V BR5002 CD 50 Cap. 25Umfd. 50V...

J L

TS-175A U Freq Meter S5 to 1000 mc s New TS-174 U Freq Meter 20 to 250 mc s like new TS-41SA U Sig Gen 400 to 1000 mc. s like new . . , IIP-100A Low Freq Standard used good TS-522 CRT-3 Tester for Gibson Girls New AN UPM-79 SW1 used with AN SPS-5 radar New TS-375A U VTVM 65.00 Dnmont 256D Scope Es ter line Ang us Recorder mod AW 0-l v e brand new Sballcross Millionmeter mod 673 like new 215.00 160,00 195.00 .375.00 60,00 75-00 35.00 120.00 210.00 100.00

Deluxe Conversion of the Command Set Antenna Relay Unit

Antenna Kelay t nits BG442, used 111 Radio Set SCR-274-N, and RE-2 ARC-5, used in Radio Set AN ARC3-5, are widely available on the surplus market. While not too popular in the past, these versatile little units give you a lot tor your money. Phis article presents a de luxe conversion of these Command Set accessories which lias several advantages over those previously described.1 This conversion features commercial appearance, low cost, calibration data, push-to-talk circuitry and a unique relay...

Electronic Servicenter Of New York

Y. W ith the very low tuning rates of many modern receivers, the laboi of tuning from one end of the dial to the other is considerable. If, as is often done, a subsidiary planetary drive is added, the operator may come down with 'nailers wrist as a result of tuning across the band too many times in succession. What is needed here is a simple motor drive to save wear and tear on the operator s wrist. Only a few modern receivers are so designed that a Zenith...

Info

Orr (W65AIK Basics, theory and con struction of beams, transmission lines, matching devices, and test equipment. Aiimost all ham stations need a beam of some sort , , here is the only source of basic info to help you decide what beam to build or buy, to install it, how to tune it. 2.70 23 NOVICE 6 TECHNICIAN HANDBOOK Stoner W6TNSJ Sugar coated theory receivers, transmitters, power supplies, antennas simple construction of a complete station, converting surplus equipment. How to get a ham...

Trix

Upper and tower sidebands on all ranges + AM & CW Power output control 75-500 watts Automatic level control (A. L C,) Meter for monitoring plate current and transmitter output Rugged heavy duty cast aluminum chassis Modern styling and extra compact for table top use Carrier suppression more than 50 db Unwanted sideband suppression more than 45 db Spurious frequencies down more than 45 db Alt Crystals included VFO Stability 50 cps. after one-half hour warmup Pi network output. 45-100 Ohms...

Ax

Tl 500 to 550 volts ac center tapped 80 ma L 6 hy 80 ma filter choke Note No bleeder is used as R22 and R23 present a load of 14K ohms at all times. Tl 500 to 550 volts ac center tapped 80 ma L 6 hy 80 ma filter choke Note No bleeder is used as R22 and R23 present a load of 14K ohms at all times. Here is an SSH receiver that combines basic operating excellence with all of the extra features you want to make it a versatile, fun-to-work-With unit. Full coverage from 6 to 160 Meters plus excellent...

Utc Type Cg Filament Transformer

Secondary 5VCT AT 25A. INS. FOR 5KV working, 11KV test. 11 lbs. CG-121 8.50 ea, Large stock of plug-in resistors, Give ohmage and overall length. Large stock of TCS spares, cables, mounts. Combination Transformer, 16.6V. at 1.25A., AND 12.6V. AT 3.5A. Ideal for filament and 12 VDC., for relay power for mobile eqpt. 3W x 3Vz x 4VsA . Primary is 115 230V. 50 60 CYC. 672-0005-00 PP 3.15 ea. 115 230V Pri. 60CYC. Sec. 5.0VCT 6A, 2500 VT. HS. Ms x 3Vz x 4Va, shipping...

Selectivity e Twoer

11 is a well known fact that a superrengen receiver is sensitive. However, it is also extremely broad. Four or five signals will cover the entire two meter band. A receiver of this type can be made selective, In fact, the selectivity can be made almost equal to that ot a superbet and with far less tubes. Approximately thirteen years ago, experiments were made with a coaxial tank input circuit having a bandwidth sharp enough to receive two signals only 30 kc apart in the two meter band. The 6AK5...

J

BC 1206 - Receiver - 200 to 400 kc - Less Tubes 1.95 ea., 3 for 5.00 R77 ARC3 - Receiver - 100 to 156 mc AM - 19.95 RCA - -WV97A - Vacuum Tube Voltmeter - Less Probe 27.50 Mickok - 110B - Vacuum Tube Voltmeter - Less Probe 9.95 3API - 51.95 3CP1 - 1.95 5FP7 - 1.95 5JP2 - 1.95 5AP1 - 1.95 5JPI - 2.95 5CPI - 5.95 902P 2 - 3,95 5LP1 4.95 Mu metal shield for 3 tubes - 1.95 5 shield - 2,25 Transformers - lOOOvCt -500 ma - 7,95 400-0400 - 175 ma - 12,6, 3A - 3.95 2100v - lOOma - 1.95 400-0-400,...

Zero Bias Triode

The UE572A is a zero bias triode and has been specifically designed for Single Side Band applications. The UE572A will serve as a direct replacement for the 811A and with its plate dissipation of 160W, it is capable of handling twice the power of the 811A, Two UE752A s in parallel will permit a total power input of one kilowatt. D.C. Plate Voltage. .2750V P.O. Plate Current , 350 ma Filament Bonded Thoria Fora technical bulletin, write to section 361

For

Bert Sol toff K3IUV 8582 Benton Avenue Philadelphia 15, Pennsylvania you are contemplating the purchase of an item of si i plus equipment it should satisfy one of two requirements, he first is that it should be readily adaptable with minor changes to the intended application. II it does not meet the first requirement, then consider its purchase only if it contains a large assortment of useable parts, if it does not meet either of these requirements forget it, as your garage or basement is...

Transmitters

The transmitters with proper use can put out 50 watts or CW and watts on voice, with the use of the BC-456 modulator which is a separate unit, dynamotor used with equipment is a DM-33 24 VDC input output 575 VDC 175 liA 4 mounts on the modulator. Tubes used 2 1625, 1 1626 4 1 1629 magic eye tube for crystal calibration Size J x 7 x 12 WT.9 Lbs 5.3 MC NEW 8.95 7. UC N1 W 9.95 9.1 MDuaed 14.95 15 MC NEW 16 95 BC-456 MODULATOR ANQ OyNAMO-TOR MOUNTING. Used wttk Cowhand Transmitted Complete tn

Antenna Relay Unit Bc A

Interior view of the completed rf accessory unit. Note use of the octal socket terminate as power supply component tie points and the short, direct rf leads. RF shunt, described in the text, was not installed at the time of the photograph. Interior view of the completed rf accessory unit. Note use of the octal socket terminate as power supply component tie points and the short, direct rf leads. RF shunt, described in the text, was not installed at the time of the photograph. pnrate the relay...

Pogo Stick Walkytalky

Sensational Hi-Efficiency Walfc-Talfcy. known as BO-745 Trans-Receiver part of SCll-511 used widely by CAT. Excellent for emergency com muni cations especially for small boats on the Safety amp Calling frequency of 2182 Kc scouting, liaison, patrol contact, etc. Freq. range S.O to 6 0 mc, easily raised or lowered by removing or adding turns to Ant amp Ose, coils in plug-in tuning units. Power Output 0.7a Watt, Crystal Control of both transmitter and reeeiver. Plug-in Tuning Units B0746 with...

Catalog Issue

Somewhere along the linet about one of 25 amateurs reaches a point of no return' in pursuit of this unique and wonderful activity we call ham radio. Up to this point, his interest, his technical skills and experience have grown and broadened by leaps and bounds. He has studied or experimented with a variety of equipment enough to know what to expect, and what he personally wants in ultimate performance, Beyond it, average performance or the absence of needed features no longer are an...

Transmitter

T-I4 TRC-I FM TRANSMITTER, 40 watt, crystal control, one chan nel, covering the freq of 70-100 MC with 30kc phase shift f re q deviation whenmodulateo by a 250 to 12000 cycle audio signal. Operates from H5 230 volt 6Qcy has 2 Meter for measuring voltages of the different stages and comes complete with tube t 82914 6V6,1 6SL7,1 6SN7,2 6AC7,1 816 amp I 5R4 Size 16ixI Ox 2 WT 65lbs, Price used 24,95 2133 ELIDA RD. Box 1105 LIMA, OHIO

PEA Whats that

Brandywine St. Arlington 7 Va, Power supplies may not be too exotic a subject, but even mobile needs one or more. The unit described here gi es 250 volts dc at 100 ma or better with 12 volt 3,5 amp dc input, just right for a Heath TWOER or similar rig. Conversion of the PE-97-A or the similar PE-120-A yields a highly rugged but compact mobile supply whose husky military components are not often Found in amateur gear, This is one of the easiest surplus conversions...

To

Minai board C to the 6 volt or straight-through position and short CH3 oat. By keeping your filament leads completely out of the vibrator box no filtering is required in most applications, the TVOER being one such. The only mechanical problem of any proportion is in saving the 10-foot battery cables when removing the basic power unit from its outer container. The rubber seals through which the ca gt les run can be removed with a little surgery, and you will wind up with some nice heavy cables...

Heath Company

Prices and soecff cations ubioti to chan without noticc. Deafer and export prices slip tu i hTgh amp rv Photographi by Morgan S. Gasi7ftan Jr. Photographi by Morgan S. Gasi7ftan Jr. Roy Pofenberg W4WKM 31 6 Stratford Avenue Fairfax, Virginia Since publication of The Fine Art of Surplus Utilization in the November 1961 73, the writer has been on the lookout for equipment which would effectively demonstrate some of the concepts developed in the article, The RT-45 ARQ-1 Receiver-Transmitter is an...

Gp Transmitter

CD-526 Oeuf 5 ft with PL-I 53 cd-532 cable 5 ft. ith pl-i 52 each end, 2.75 PS-274N Power Supply for Command amp ARC-5 Receivers. Operate from 115 volt 60 cycle, complete i th speaker- phone jack and bfo s itcu DM-32 Qynamotor 24 V U 2.95 IN 4.95 35x032 ,f 12 V 4.95 DM-33 DYN.F Tran24V , used 2.95 Spin tuning knobs for Receiver .00 Connects plugs Rec Trans- ea.1,50 tuning units less case With casg 4.50 addittional. 3.95 4,95 BC-306 Antenna T ner not a va L ABl E DYNAMO TORS W-77 127 f BC-191...

Pick A New Heathkit

80, 4 amp 20 METER SSB TR A NSCEf VERS Brand new More features , . . better performance at one-third the cost of three-band units. Save by buying only the bands you need True Transceiver for one band, one sideband operation Crystal filter type SSB generator Automatic level control PTT and VOX circuits bui t-in Low frequency VFO 1.5 1.7 mc for greater stability than comparable units 2KC dia calibration 6 of bandspread vernier tuning Provision for operation with linear amplifier Easy assembly...

Ma

Xbsxb wt JUlb 340 307 768 499 Price 7.95 3.9 HY 950 MA. tapped 2.7 HY. 25 ohm oc,2500vrms size 11x8x7 wr 45 STKiX3l5 6 Price 14.95 PRI 95,105,115, 125,190.210,230, 250,50 60 cycle 600 att. Size 5x7x5 wt.I6 STx f 2Z9605.3 PRICE 7.95 MODULATION TRASSF02MSR Batta 20 Response Response 200-5000-1DB Pri.Z 6000 SEC.Z 6000 Collins 677-2010-00 Size 2ix2 x3i ViT.3ilba Stock 229634.53 Price 2,95 MODULATION TRANSFORMED 100 Watt RESPONSE 200 to 5000 PRIi 7000 SEC 7000 F BC-191 375 TRANS. ize 3 U5 WT. lbs....

Evaluator

When W0LFH asked if I know a simple way to check audio coil inductance, I had to give him a no. I no sooner got home than I found the November issue of 73 with an article entitled Choke Evaluator J At first 1 thought this was the answer to Si's problem, but after reading the article, I wasn't so sure. The mention of 1, having brains, 2, square roots, and 3, ten minutes calculation time didn't appeal to me. Now I'm not much of an originator. I seldom have an original idea gt but give me an...

Bc Transmitter Bc

Transmitter approx. 10 watts Voice and 20 watts CW in the freq range of 2500 to 7700 KC by use of plug in coils,Uses tubes 2 10Y, 2 45 Output meter 2 0 to 1.5 HF. UO control on front panel. Voltage required approx 300 VDC for plates 4 12VDC for BC-230 4 24 VDC for BC-430. Size U xfl'x 7 1 W 10 lbs. Price with tubes, plug in coils 4 schematic, USED 58.95 Receiver TRF ,ufree plug in coile to cover the freq. range of 201 to 396 4 2500 to 7700 KC Si tubes 1 37,1 30 gt 4 39 Voltage required 220 VDC...

Motorola Fmtrud Mc Motorola Fmtrd Mc

This unit Has a 30 watt transmitter using 2-2E26 tubes. Dynamotor power supply. Receivers ore doubie conversion super het. Receiver uses vibrator power supply. Shipping Wt. 46 lbs. Catalog 15, 150MC-6V DC Price 44,50 Cafraiog 16, T50MC-12V DC Price 52-50 Catalog 17, 30-50MC-6V DC Price 44.50 Catafog 1 3Q-50MC-12V DC Price 52.50 15 Ca e for above, Catalog 19 Price 2.50 MOTOROLA FMTRU-l 4G D MOTOROLA FMTR-140-D This unit has a 60 watt transmitter using 829B in final. Vibrator PhS, for receiver...

Transmitters And Receivers

Johnson Viking Challenger, W amp T NEW IB Stock 148 . 139.95 Johnson Viking Pacemaker, W amp T, NEW IB Navy TDZ Transmitter by G E. for 200 400 Gonget FM Auto Radio Tuner .Mod. 3311 NEW IB 138 Sonar FM Exciter, Like New IB 129 Navy I BX-4 Trans. amp E lt ec. WAC supply and LW 51 Transmitter, Litce New IB 128 RME-DB 20 Preselector Good Condx. 125 Te Craft 220 Mc Transmitter less tubes amp Xtal 143 J.,,, IT amp Uic rafters Speaker Mod, R-46 itl case, J Kw Plate Pwr, Supply tisin 866 tubes 116 500...

Mod

Course, accomplished by dipping and loading with the link capacitor- How does it work Using a 12 element colinear array from an average YHF location, 1 work 20 to 30 miles each evening with the regular crowd on 220 in northern New Jersey, and when conditions are right, distances of 80 to 100 miles have been covered with S7 to S9 reports, i haven't had the chance to put this rig to the rest during a really bang-up opening, but judging from these results, I'm sure that it will be in there with...

On Your Hamshack Your Rig At Your Door

Amplidyne Labs has come out with a line of converters and preamplifiers that look first rate. The two meter conveter uses two Nuvis-tors as grounded grid rf amplifiers, a 6 6 crystal oscillator and a 6iiQ7 mixer. This gives excellent freedom from overload or cross modulation on strong signals. Ihe price is only 34,25 plus 9.75 for a matching power supply. The six meter model on the right uses a Nuvistor GG rf amplifier, a 6G4 crystal oscillator and a 6Bo7 mixer. Price is S28.5G P.S. 9.75 . The...

Au

LI 4 T wound on ground end of L2 L2-L3 Coils wound to frequency on x end to pin 5 of the 12KS, Apply power and with an rf probe on pin 7 of the I2BE6, peak the transformers for maximum voltage. Remove the ground on pin 8 of the I2K8 and the wire to pin 5. Reconnect the 5 mmfd to pin 1 of the 12BE6. Move the bfo trimmer turn in either direction. If ii VTVM is not available, a satisfactory way is to apply power and connect an antenna wire to the RC-58 A U converter input. Turn the af and rf gain...

Wtqs

An article appearing recently in 73 Magazine 1 described the RT-91 ARC-2 transceiver together with a method ol conversion to ac power, i his transceiver makes a very convenient means for covering the many MARS frequencies plus coverage of the 80 and 40 meter bands. The ability to have transmitter and receiver tuned to 8 spot frequencies and loaded correctly to the antenna through the Autotune feature is worth the price oi the equipment many times over. There is one area in the receiver,...

Mew Air Force Tech Manuals

52-19 Antenna Systems 1,50 52-11 Aircraft Sheet Metal Maintenance 1.50 101-6 Airborne Shoran SI.50 102-4 Ground Shoran 1.50 25 Position Stepping Switches, automatic electric type. 45 Unew KY-65 ARA-26 Keyer, article pg 66 apr 62 used, exc APX 6 Transponder GET ON 212 mc used, exc S19.95 APX-6 Conversion Pamphlet , SI.50 ARN-5 Glide Path Revs. freq. 326- 3mc, xtal controlled, omplete w tfr 6 relays Gr 11 tubei Used exc cond. 4.75 BC'348 Rcvr. freq. 200-500 kc amp K5-1S mc. Used, exc cond ,,...