Wbpd

Hop Hopple W3DJZ 20. G. Cus Brewer W4FPW See it, hear it, operate it at Uncle George's This high performance Haliicrafters Hurricane transceiver gives you the big signal and more. Receiver Offset Control (RIT) permits 2 Kc adjustment of receiver frequency, independent of transmitter, for round table, net or CW operation. Full coverage of 80, 40, 20, 15 and 10 meters. AND maximum legal power in a minimum of space nearly 5 watts of power per square inch SR-2000 995.00 P-2000...

October

Since the contest rules state that the antenna must be held and aimed by one man, K6HAA's 32-eiemen+ extended-expanded W6GD collinear measured 16,2 dB. i'he small -four-foot dish in the background was tested at 1296. K6MIO's 12.5-foot dish measured 16.9 dB at 432 Mhz. Th is dish consists of an 8-foot surplus with a homemade extension which brings It out to a 12,5-foot diameter, parabolas don't make out too well on 432. On 1296 its a different story, since it's fairly easy to hold and aim a...

Vhf Success Stdry

In the limited field of Amateur Radio we seldom see early evidence of a stunning success* The so-called classics usually take several years to develop. Swan's six meter side band transceiver is a classic now, scarcely 12 months from the date of its first commercial release. This is all the more remarkable because of the smaller number of hams occupying six meters, as compared with the lower bands* and startling* too, because there are so many neophytes on six meters holding technician licenses...

Tronios

3455 Vega Avenue Cleveland, Ohio 44113 Photographs furnished by George Chong, W6BUR 11-element YagiV measuring from 11-5 to 13.0 dB, a W2CCY Yagi at 11.0 dB, a commercial 1.6-element collinear at 10,3 dB, K6MIOs 7-dipole collinear feed (without parabola at 9.7 dB, and a 14-element J slot, a 90 corner reflector, a 4-foot Lafayette UHF TV parabola with dipt le feed, and a 9-element quad, all at 8.2 dl3> Lower gain antennas included assorted Vagi's, a dipole of questionable match, corner...

Info

Fig, 2, Schematic diagram of K7YZZ's SSTV generator The dc voltages associated with the CRT focus and brightness controls should be negative, not positive as shown, The 50k l5fe transformer ini the plate circuit of 6BQ7 10 kHz sync oscillator is a Knight 54DI458* The 600 (5k output transformer in the transmitter line Is a Knight 54D2023. Fig. 3, Schematic diagram of the power supply for negative supplies their polarity is reversed. side walls. The lens originally used was installed on a home...

Navy Tcs Receiver Am

1.5 MC to 12 MC in two (2) bands, Variable freq, oscillator & crystal control on four (4> preset channel* In the entire freo. range. Audio output 1.5 watu into 500 tihm load us itnht s t2S C7 UF A,, 12SA7 converter, 2 138KT IF A., I2SU7 detector BFO. iJAfi oscillator, 12AG audio Amp. 456 IS'* Preq. I.arjjo vernier h ipln dial, audio gain. AVC. BFO and all panel- Vultages required 12 VDC MA. Size i U AA 95 USED Checked tor Operation 10.00 e*tra+ 1.5 MC to MC in three bands, CW 40 waits,...

U

TELEPLEX METHOD Code Instruction gives you training that makes you proud of your accomplishment. The greatest pleasure derived from any hobby is an exhibition of your skill. Shaky speeds of a few words per minute may be gained in most any haphazard, nit-or-miss system. Professional skill will be gained only from professional training. Brochure 7-S Ic free it gives you Hie fact*. E 739 Kaxmir Court, Modesto. Cal. 95351 S VES You can molte BIG MONEY by collinq us collect todayJ if you have any of...

Iaj

Be used to design ccils of any particular inductance value by meaiis of ratios. To see how it works, let's take an example Suppose we want to design a coil which will have an inductance oi 20.0 H when a core is inserted half-way into it (c 0.500), and the permeability of the core we wish to use is 9.00. Find the point on the graph's horizontal axis corresponding to c 0.500, and move directly upward to intersect the curve marked 9,00. Then move directly across to the vertical scale and read off...

Dx Handbook

NOTHING HAS BEEN LEFT OUT EVERYTHING IS IN THIS HANDBOOK The material in this handbook has been prepared by some of the world's top DX operators. The maps are the latest and entirely up to date, including even 7P8 This is not a rehash of previously published materia , it is all new Th is handbook will be published soon and will be on sale for 3.00. If you write now and take advantage of this pre-publication offer we will send you this handbook, postpaid, for only 2.00.

Vhf Specialists

VHF-UHF Converters High Power Linear Amplifiers Custom IF Strips and Local Oscillators Reasonable Prices P.O. Box 474P Port Hu*neme, Calif. 930U Phone (805) 649-9058 Crank-up Towers for the ham with space problems. New Design, Lightweight, Free Standing Crank-up Towers Safely supports most TRI-BAND BEAMS in 50 mile winds without guying. F ,h models use new adjustable base flanges and heavy 1 Anchor Bolts for one-man installation away from house without additional support using fooling. Standard...

How to get into one of todays hottest moneymaking fieldsservicing way radios

Before he got his CIE train tug and FCC License, Ed Dulaney's only professional skill was as a commercial pilot engaged in crop dusting. Today he has his own two-way radio companyt vvit h seven full-time employees. *7 ant much better off financially, and really enjoy my work 1 he says. +7 found my electronics lessons thorough arui easy to understand* The CIE course was the best investment I ever made ' lir flying high. Before he got his CIE train tug and FCC License, Ed...

Illuminated World Globe only

FREE a two year subscription or extension to 73 YES Send me, immediately, one of those 13 illuminated world globes, with desk stand and lamp. And enter a two year subscription for me to 73, This 13 globe is just the right size for your operating desk. The globe rets you the beam Heading for a country quickly, Keep it beside the rig and spin to the country you are working. Illuminated, makes the shack look really great. The lamp is easily changed if it ever burns out. For a smali...

New Arrivals In Godo Scopes

Tekt. 535 Aq oners W 53C duaMruce phigin & 2 books iNc atti n. pfl) , all w NBS-traceable calib, tcrtifiraUis dated Juno 1007 535 w round corners, hi tie, w C'A dual-trace i> tugin, clean as new and excf operating , 950*00 Fa rciiild 7G7H all-silicon-solid-state rack mtg w 71-14 Time-Base plugin 1 us lu J sec div. & J OX multiplier mid w duai-trare 76-U2A plugin dc to 25 mc pass, sensit. calibrated 5 mv to 10 v dlv , clean new, prtd. , . * .795*00 WKITE fi> r list of cheaper acopen...

Electronic Parts For Construction Or Repair

For 13 years wo have been selling electronic parts, anrt stork many Murwlan i trim Uju are not available fi tn the lante tuppUen. Mou orders are shipped within 24 hours of the time we receive tha order. sent a post card with your name, address and zip todf for our free caUlojr of values. P,0. Box 71 DepL 73 Bluffton, Ohio 45BI7 WANTED Military, commercial, surplus. Airborne, ground, f rangmtitters, receivers, testsets, accessories. Especially Collins. We pay freight and cash. Ritco Electronics,...

Atamark Kits

Handy, economical marking kits for the home experimenter, student, hobbyist, etc, as well as the regular electronics applications. You'll find hundreds of uses for these inexpensive sets. K58B Audio, TV amp Hi-Fi black 1.25 K58W Audio, TV amp Hi-Fi white 1.25 K59B Amateur Radio amp CB black 1,25 K59W Amateur Radio amp CB white 1.25 K6Q9 Experimenter, Home amp Intercom K60W Experimenter, Home amp Intercom white 1,25 K61B Test amp Industrial Equipment black 1.25 KG1W Test amp industrial Equipment...

New Cw Monitor Code Practice Oscillator

MONITORS TRANSMITTER'S RF OUTPUT WITHOUT ANY CONNECTING WIRES TRANSISTORIZED KIT OR WIRED BUILT-IN SPEAKER LOW COST Model QM is a combination code practice oscillator and C,W. monitor. It monitors the transmitter's RF output WITHOUT any connection to the transmitter. It may be used with any ham transmitter or transceiver. There is a tone control and headphone jack on the front panel. Model OM contains 2 transistors and 4 diodes. Size 6 x 3 x 2. Model OMK KIT FORM Model OM Wired and Model OCPK...

V

A 3N126 balanced modulator which was breadboarded to measure performance. tn this circuit, a 2 kHz audio signal was used as the carrier, a 60 Hi signal as the audio. The Motorola 3X126 dual-gate FET looks like it might have some interesting possibilities. A bit of bench work showed what it would not do, and some of what it will do, Iiut then again, maybe not any better than anything else. The 3N126 is not a product device, at least not in the same sense that the 6L7 and 6BE6 are. It is...

Magazine Peterborough New Hampshire

YES Send me a copy of the NEW DX HANDBOOK as soon as it is Q N I Y published. Enclosed is cash, check or money order for 2.00. John Brosnahan K0UTX 4306 E. 108th Street Kansas City, Missouri 64137 A Cheap and Easy Gamma Match Capacitor Here Is a system which can handle a kilowatt and eliminates the mechanical problems in building a gamma match The vagi antenna fed with a coaxial feed-line is die most widely used antenna on the HF and VHF bands. It is mechanically simple and quite strong. But...

Teletype Demodulator Unit

Northern Radio type 104 Model 11 tubes, 115 or 230 V 00 cy operation. GOOD CONDITION. SPEC. PHICE S24.95 shpt wt 50 Th Stelma Telegraph Distortion Analyaer type TDA-2 a self contained portable unit designed to measure bias and distortion of telegraph start-stop signals. Distortion is indiesed hy vertical pips displayed in a rectan-cular pattern on the facc of a cathode ray tube. Measurements can he made while the machine Is operating. Measurements can ho made on circuits operating at 60, 75 or...

Herbert W Gordon Company

Woodchuck Hill Road, Harvard, Mass. 01451 RECTIFIERS, TRANSISTORS amp COMPONENTS 6 tube amplifier, new 4 lbs, 2 LSB watt res is tors, as amp orrcd lt 50 hOO Ceramic disc capacitors, assorted .75 S 1.00 Tantalum capacitors, assorted UOfl Mercury batteries. 5.4 V 4 l-00 LC-, TO-5, untested, rnitiij good ft L0 I.C., dual-inline, untested 10 1.0 1 2N389, S W, 60 V, TO-53 - 79 N37 7-11 as td plastic silicon ilvter 20 1.00 2N370J-00 anfttd plastic sllkon ii ter 10 l-OO 2N13DQ as amp ld, PNP amp NTN,...

AMP

Block diagram of the 2Q, a completely transistorized communications receiver of modern design using FET's in the front end. Much has been written on transistor circuitry during the past few years so I will he as brief as possible and describe only those points which I think important or unusual. Capacitive coupling is used throughout the front end preselector ft uses high-Q toroid coils and slug-tuned coils. The simple switching provides the necessary selectivity and ease of adjustment...

Silicon Controlled Rectifiers

200 PEV i ,SJ5 f 1.00 L65 Tophus. 00 VIW 08c 400 PIY. ,12c 000. .18c VarirapB, tasvr, 7. 47 or 100 PF il.25 Minimum order 3.00, plus postage, CODs 25 - On a 10.on order or more, pick any K00 Hem free On 25 or more iilck any 3 It 00 items free P.O. Box 2702E, Baton Rouqat La, 70821 Box 393, Littleton, Colorado, 80120 Phone 303-798-2629 Denver The H Sc C Wilson Co. specializes In iow cost equipment for the communications field. We can malte Hfe easier for you hy supplying your needs for less. HTH...

Mars Oscillator

Five crystal controlled channels with vernier frequency control. May be used with Models 500r 350 amp 250 transceivers. Makes it possible to trunk mount the Same as Model 4lo in size and appearance. 50 to 54 m H BHH eludes switching relay for P EH B tion. Model 22 adaptor not required.

F

Schematic diagram of the 40 and 160 meter converter. Field effect transistors are used in the rf amplifier and mixer stages a bipolar device in the crystal-controlled oscillator. Tuned circuit values are given in Table 2 nected across the converter input to prevent excessive rf voltages from gt eing applied to the 2N4224 while transmitting. While there is some question as to the need for an rf amplifier at frequencies below about 10 MHz, one was included, principally to minimize local...

Vhf Fet Converters

50 and 144 MHZ Converters and Preamps presently available with higher bands soon available With cummerc ileal gn and specs, these derives have low noise figures, tnw I-r modulation and crossmodularIon distortion and hijth Image rejection They are deMcned for the -erioi .- VHPcr and arc eompt t i h e y priced. You cannot hu gt thesis units until joy gt t studied our specl-f I cations. Writ TeleToc ASSOCIATES PO Box amp 0eN San Luis Obispo, Calif. 93401 Now you can get a perfect match for Hy Gain...

Protax

A must Brand new Coaxial Antenna Switch that automatically grounds the antenna system when the shack is shut down. Handles a full 1000 watts comes complete with knob, escutcheon plate with erasable marking panels and mounting bracket on Model 376, Model 375. 6 position rear axial connectors 13.95 5-position side radial connectors 12.50

Brand New Government Surplus

DIODE-IN202I PIY 150 RMS 105 AVG 10 amps. 4 150 SOCKET SK 650 no by-pass capacitors 2.50 ELECTROLYTICS 3500 MFD SO VOC 1.00 OIL FILLED CAPACITOR 8 MFD 1500 VDC 2.00 BC 221 TUNING CAPACITORS NEW 4.00 PLUG-IN COMPUTER BOARDS wWb diodes, CRYSTAL BOARDS 10 crystal positions 5 for 1,00 JENNINGS CAPACITORS ISO MMFD SQUIRREL CAGE BLOWERS 2 115V 60 cy, 5.00 OHMITE PARASITIC SUPPRESSORS P 300 .25 BAG OF RESISTORS 50 assorted carbon amp wire 1.00 DUAL VARIABLE CAPACITORS ea, sec. 7 100 PF fOOOYAC I 50...

New Products

Knight Kit 664

This new supply from Allied Radio is a versatile B filament do bias supply that fills the need for the multiple voltages required in circuit experimentation and troubleshooting. It is an excellent supply for the amateur since it delivers 0-400 Vdc regulated up to 200 mA continuous 0-100 Vdc at 1 mA regulated for line variations plus 6.3 Vac at 6 amps and 12.6 Vac at 3 amps for filaments. The higli-voltage output provides a capacity of SO watts. The voltage and current of the dc supply is...

Cali For Ni

SELL JOHNSON RANGER I, 100,00 HQ-110 90.00 speaker 55,00 Vibroplex speed key with case, S12.00. WA1FKT, David Heeley, 30 Brook shire Rd., Hyannis, Mass. 02601. Phone 617775-4972. HALLICRAFTERS SX-101A with speaker. Johnson Valiant. Hy-Gain TH-4. cables, SWR bridge, many accessories, professionally maintained, R. Yarmus, K2RGZ, 5900 Arlington Ave., River-dale, N.Y, 10471, 212-884-6336. CLEGG INTERCEPTER B with CI egg AH Bander in good condition. Price firm S250.00 for both FOB Stanhope. N.J....

Jfd Piston Trimmers

W king plus adjusting screw. Solder terminals NEW Choln S for 1.00 5wtecfep Ipre Ulan SOLID stmter CONTACTS similar to 'RIj JV901T, Iotiff, plus for V-i shaft, NEW. 4 Ihs, 4 10.50 Kit IE KflSO miniature ceramic trimmer, lulcit tyj e diam. V thick. N t W 5 ft- 00 VI r - Tuhular lytic 1 diam. 4 lotie, wire axial leads, NEW. lb. Oil MIT K plate choke, 5 m Hj ohm, 1 amp, 40 to 120 WlHZ. BIJ4LIOUB GREEN. NEW

VHF Log Periodics and the Tog Scan

If you have been planning an antenna system for the VHF or UHF bands, you shouldn't overlook the log-peri odic array. Th is antenna features high gain, wide bandwi dth and reproduceabili y. The new look in antennas is here. Soon VHF log-periodic antennas will l gt e replacing vagi arrays of practically ail types, and also replacing old standbys such as the collinear, helix, and corner reflector. This revolution has already been taking place in the television antenna business for several years...

T W Holden Kjax

Chicago Heights, Illinois 60411 TCS Komme Control Box 22Vi7i . W SpwJttt EX 7.75 ID91S AR N5 Bearing Indicator for AEN Recvr. EX 7 50 AS3I3B ARNG Station Seeking I wp. lOtf-1750 fcc. EX G.25 RT3I6 APNI2 Iii0-234mc Transceiver w tubes EX 12.50 Dt69C APNl2 Scope. 3JPI CRT. PE'DT CoftJt Switch KX 9.75 OAA-2 150-240mc Ten SeL llf.V tiOcy Suppij. -, .EX U 75 AM300 Intcrfone Amplifier w pp GAQS's outrni- . EX .75 Cabinet, iilnpc Front w 3 Meters H5. '. 5, 50tiial ,.KX 10.50 AT339...