Quement

Notice ca L f or n la residents include 5 percent sales tax Having recently acquired a Benton Harbor lunch pail of the two-meter variety, I decided to try my hand on that band. However, being a poor college student living in a tiny apartment, I was hard pressed for an antenna. The antenna I needed had to be indoors and, therefore, small. Lack of money meant it had to be cheap. And, 1 had to reach the local two-meter gang, A dipole and a whip proved unsuccessful. A ground plane seemed to be the...

Vanguard Labs

196-23 Jamaica Ave., Mollis, NY 11423 Eduardo Noguera M, HKINL, EE. RE, Post Office Box Aereo 774, Barranquilla, Columbia South America, Antennas, transmission lines, past experience in tropical radio communications and maintenance, HF antennas, AM, transmitters and receivers, VHF antennas, test equipment and general amateur problems. Can answer questions in Spanish or English* D. E. Hausman, VE3BUE, 54 Waiter Street, Kitchener, Ontario, Canada. Would like primarily to help Canadians get their...

Special Item Sale

VHP RECVR, Collins or Wiko*, 1 > 3136 mhz, AM 110 vac, makes first class net or monitor recvr. ex FAA ijs 125 * DIGITAL COUNTER, 4 row, good condition 90 FREQ. METER, 100 500 mhz, .001 accuracy, excellent condition, heterodyne operation, 25 tubes plus crystal anrl original calibration book. 1 15 230 volts, civilian type LA 6 or military FR-6. was FREQ.METER, 1 0-100 mhz, similar to above instrument, rack mount, 1 15 230 volts with original calibration book and schematic, best quality made,...

With Call

Smith, Jr., WA9VFG 2308 McCord Most every piece of information on microwave equipment is either line drawings, or pictures showing very complex machined parts. It would be nice to have the proper skill and a machine shop. This isn't always practical however. Here then, is the next best construction method that any experimenter can use. Soft solder construction uses ordinary solder, either core or solid, and the only tools needed are simple hand tools found around any ham shack. So...

Driver

Junk box converter using two diodes and one transistor. switch incorporated into the unit might be an unnecessary luxury, since the Mfe of the battery almost corresponds to its shelf life. Any silicon diodes might be used, preferably those having similar characteristics. Any transistor may be used, NPN or PNP, with due care being taken to observe the polarity of the battery and the proper connections of the coupling electrolytic capacitor (Figs- 3 and 4). While this unit used one of the...

Trying

Chapter in the life of a 75A2 M story that asks the question II Collins recognize his receiver after he amp done Robert L. Grenell, ex W8RHR 3926 Beech Street Cincinnati, Ohio 45227 'hose of you who arc fortunate enough to have a 75A2 have undoubtedly been waiting with baled breath for someone to write an article on a six meter conversion. I his is your lucky day, because you can now resume normal breathing. You can also prepare to dip into the innards of your receiver-One feature I...

Af

Lafayette has a selection of transistor af amplifiers which work fine. You can get up to three watts, which is better for mobile work if you have that in mind. Get several because you'll need another one for the modulator, unless you You can't buy a more potent package than the new NRCl NCX-500 transceiver. This versatile 5-bander is packed with the performance extras that give you the sharpest signal on the band, plus an enviable collection of QSL's. Check it out...

Info

New Ways of Generating Microwave Power K3PBY New Solid state devices you should know about, probably. Modification of VHF Transmitter for CW Operation . K10YB Moonbounce Aurora DX You may need to use CW. Monde Hamme K1YSD Read slowly, this may be injurious to your health. Straightforward SSB for 6 Meters VE4RE The 432'er Solid State K1CLL Bill Hoisington gets you on 432 the fast easy way. Six Meter FET You are not still using tubes in your converter Reform. Compieat Showing how much can realty...

Miniature Vf Generator

RF Signai Generator Resistance Substitution 9V DC Supply Self Powered DC Voltmeter Milljammeter AF Signal Generator Capacitance Substitution RF Field Strength Thanks to transistors and printed circuits you can hoid this complete lab in one hand. Not long ago this would have been a whole shelf full of test equipment, 455 kH generator for aligning IP's. 400 Hz generator for audro circuits. Pius a normal VOM and R amp C substitution. Field Strength meter for tuning transmitters. Everything in one...

John Meshna Jr

19 ALLERTON ST., LYNN, MASS. 01904 P. O. BOX 62, E. LYNN, MASS. 01904 MINIATURE INVERTER Transformers, 5.50 Power your old-fashioned Toob Projects. Convert 6 12 vdc to 100 250v 100 ma, diagram supplied. W6PJN, Box 611, Clovis Calif. 93612. SALE TRADE-POWERSTAT, 7.5 amp, 120V Super Pro Power Supply 4 mf 1500 v oil conds Ham-Scan HO-13 Heath Scope 10-21 Drake 1A 51J1 BC342 and P S Hugh Burnham, K6VNU, 2866 Magnolia Avenue, Long Beach, Calif. 90806. FOR SALE Ht-37 100 watts and HT-41 1000 watts,...

A

The block diagram of Fig. 1 illustrates the overall layout of the exciter. The 7360 oscillator balanced modulator is a conventional circuit in which the cathode, grid and screen form the oscillator circuit while the plates and deflection electrodes are utilized in the balanced modulator circuitry. The DSB signal produced in the 7360 tank circuit is passed through the 9 MHz filter at which point one of the sidebands is removed. After amplification in the 6AU6 if amplifier, the 9 MHz SSB energy...

IT Capacitor Checker

A careful scanning of most of the electronics magazines from the early 50s to the present has brought to light some interesting capacitor checker circuits, but none of the construction articles on these instruments boasted a range from picofarads to hundreds of microfarads. This is the range encountered by even a casual builder- Examination of the specs, of commercially available capacitor checkers revealed that most of them do not cover the wide range of values needed by the experimenter and...

Epoxy Silicon Transistors

OVER 500,000 worth of valuable EPOXY TRANSISTORS amp RTLs, DTLs, amp LINEAR AMPLIFIER INTEGRATED CIRCUITS sold to you at giveaway prices. Each and every item guaranteed or your money back. We include technical data, schematics amp diagrams with all EYE SEES. Buy now while this special limited time offering is going on.

Ksth

After reading the article on the Spiralray antenna I decided to make one. I now work 2 meters AM and FM so I thought this would be a good antenna to try, since AM is normally horizontal polarization and FM is vertical. While I usually use a 3 element vertical colinear for the FM because of its all d ectional gain, a beam is sometimes very useful. Like most hams, I look around for the easiest and cheapest way for my first try at something. I just happened to have a Cush-Craft 11 element beam on...

Current Used Gear List

Central Electronics 100V xmtr 329 Drake 2B Receiver with 2BQS speaker and crystal Drake T4X w matching Ac3P,S 329 Eico 753 Xcvr with 752 DC Supply 149 Galaxy 300 Triband transceiver with AC pow Globe Scout 680 AM CW transmitter 39 Gonset GSB 1 00 SSB AM CW Transmitter.1 79 HalUcrafters HT40 AM CW transmitter 49 Hallicrafter SR 160-both AC amp DC Supply amp mobile rack ail iike new 299 H alIicrafters SR42 2 meter Xcvr. gt 103 HalUcrafters HT37 SSB AM CW TransmitterS1 99 Hammarlund HQ100 Receiver...

Dgp

Drake Ham Kits Hy Gain General Electric Gentec GoJdline Mini-Products Mor-Gain Mosley N ewtronics Omega-T A V77W 45, INC. can be your one top, single-source. Dept. B, 512 McDonald Road Leavenworth, Kansas 66048. R1 18 k R2 - 10 k CI 27 pf 02 27 pf LI - 3ViT 14 3 8 dia, 5 16 long L2 16T 24 aircore W dia. Xtal 48 mc. depends where you want on crystals between 51.183 to 51,533 ilow side of signal will also permit converter to work into a BC radio. Compute it thus 155.15 MHz -...

A VHF Band Scanner

Rhe pan adapter has received a considerable amount of publicity and does a fine job for the HF 160-10 meters ham. The pan adapter that covers 250 KHz is usually sufficient. The VHF ham, however, may want to observe 2 MHz or more of the band. The band scanner to be described will cover the full 4 MHz of the 6 and 2 meter bands, if desired. The band scanner is sometimes referred to as a spectrum analyzer. Either term is ok but I prefer band scanner. ere is very little difference in the units. The...

Solid State Mini Af Generator

Fully transistorized sine and square wave generator, 10 Hz to 100 kHz in four bands. Smallest in world W x 3 x 31.9 lbs. An FET oscillator with a thermistor and intensive reverse feedback maintain the output at minimum distortion and constant level less that 0.3 200 Hz-100 kHz and less than 0.8 10-200 Hz . The power supply is built in 100-120 vac 50 60 Hz and is stabilized to 0. against line voltage fluctuations. Square wave rise time 0.2 is. Output impedance 600 ohms 100 ohms unbalanced. This...

Vanguard

The mean monthly number dropped as low as 14,9, yet Es-supported DX time alone in creased steadily for more than five years after the Cycle 19 peak Tables A, D, G, H . First, you should forget some tilings. Then you must learn some others you may not know at present. And, if you're a newcomer to six meters, don't feel alone. A surprising number of hams with years of experience on the lower frequencies don't know how to work 50 mhz DX consistently either Most of the rules you've probably heard...

Test of the Caringella Compressor

The ACP 1 is available fn either kit or assembled form from Caringella Electronics, P.O, Box 327, Upland, California 91786. The Caringella unit offers some unique features as an audio compressor. It is available at reasonable price in both kit and wired models. One hears and has read about so many audio compressors, both commercial units and those described in various magazines, that the tendency is not to get particularly excited when another unit of this type appears on the scene. This was my...

Bax

SAX 1 Transistor RF Amplifier 3.50 A small signal amplifier to drive MXX-1 mixer. Single tuned input and link output. Lo Kit 3 to 20 MHz Hi Kit 20 to 170 MHz Specify when ordering PAX-1 Transistor RF Power Amplifier 3.75 A single tuned output amplifier designed to follow the OX oscillator, Outputs up to 200 mw can be obtained depending on the frequency and voltage Amplifier can be amplitude modulated for low power communication. Frequency range 3,000 to 30.000 KHz. BAX-1 Broadband Amplifier...

Equipme

IG Day Free Trial Lose only Shipping Charges 30 Pay Guarantee Full Credit Within 6 Months on Higher Priced New Equipment Just 5.00 DOWN-Balance on our REVOLVING CHARGE PLAN Order Direct from this Ad CB-6 Conv, 7-1 f 17 CN-144 Conv 50-54 29 CN-220 Conv t4-l8 29 CN-220 Conv 50-54 29 PCLP Preamp PS-I AC Sappl 8 TX-86 Transmitter 39 TX-62 VHF Xmtr 109 75S-1 Receiver 75S-3 Receiver 755-3B Receiver R-390A Receiver 32S-I Xmtr 32S-3 Xmtr f9 30L-I Linear KWM-I Xcvr KWM-2 Xcvr 351 D-2 Mount 5I6F-I AC...