Parts List

CI, C2, C3, 04 - 5 iF 6V dc electrolytic capacitor, Sprague TE1084 C5, C6 - 0.047 jUF 200V dc capacitor, Sprague 192P 47392 R1, R2, R3, R4 - 500 2 potentiometer, Mellory U 2 R5, R6 - 22 Ki ViW 10 tolerance resistor J1, J2, J3, J4 - Phone jack, Mallory LA-t J5, J6, J7, J8 B 2 flashlight ceils (size D> in series in a Keystone No 176 cell holder S1a, br c, d - 4-pole 5-position nonOshorting ro tary switch, Centralab PA 2011 S2 - SPST toggle switch, Arrow-Hart 20994LH Miscellaneous - Motorola...

Division Of

Tlhe title of this article can he taken quite literally, Whistle, hum, speak or play a tape to key your transmitter. Although the original motiviation behind the development of the Krazy Keyless Keyer was my own inherent laziness, it ultimately became an extremely useful asset to the CW operation of my shack. Three items interfere with my full enjoyment of a CW contact the first is the repetitious CQ calling second, the inevitable repetitious description of my shack, its equipment, my name and...

Auction Action

Auctions of ham gear bring out the scroungers, the builders, the cheapskates and the con men. The above pictures were taken recently at a typical New England auction the Honeywell group in BMlerica (MassJ where long rows of tables were piled high wtrh goodies, Where else can you get a Collins transceiver for 2 in good shape Just about everything imaginable in test equipment, surpfus ngsr old ham gear, home made stuff, and microwave equipment went on the block. The buyers were gloating as they...

Feedback Portion

Final oscillator, 29.65 to 31.65 MHz. This transistor (refer to Fig, 3) is ba e-coupled to the rf collector circuit, and oscillator injection is brought in to the emitter. The collector is then tuned to the lower beat note of I.f> 5 MHz and sent out to the if strip, or to your lab receiver for testing. A tuned diode on 1.65 MHz is also good for testing purposes. Sounds easy. There are a few little details though- Oscillator injection is one, Where to bring it in, how much, oscillator...

Kcll

Every so often an article appears in an electronic magazine describing an expanded range line voltage monitor of one type or another. Often a special meter or other component is specified which may not be available to the individual. The circuit which follows uses standard noncritical components which are available anywhere in the the country. If even a meager junkbox is available the cost should not be more than a few dollars. A wide latitude in values is permissible allowing wholesale...

Output

F1 0.5 amp line fuse T - J J 5 VAC primary, 20 V-flC secondary at 0.5A DJ j 8V I W zener D2tD3 smalt diode combinations D4 -D7 400V 1A rectifier diodes Rs series current setting resistor SI - AC 3 pole, 5 positioj rotary switch M - 0 30V voltmeter Q1 GE-14 transistor Q2 40466 transistor. provide additional switchable increments. Just use lots of diodes and a big switch. The construction is non-critical and the parts can be assembled in almost any manner. The only...

Hamfest Hints

A hamfest has to have several tm portani attractions in order to bring in the brethren. Unfortunately, many hamfest committees give some of these aspects short shrift - and another lead balloon is launched, The exhibitors are not the begin ning and end of a hamfest, but the fact must be faced that without 'em you ain't got a hamfest. So how do you get exhibitors to come If you convince them that you wit have several thousand live amateurs in at tendance they will come. The greater number of...

Bassett Vacuum Trap Antenna System

Complete packaged multi band antenna systems employing the famous Bassett Seated Resonators and Balun from wti ch air has been removed and replaced with pure helium at one atmosphere Operating bands are indicated by model designation. The famous sealed helium filled Balun . . . employed wrth the DGA Series Antenna Systems. Solderiess center rnsulator and easily handles more than full legal power while reducing unwanted coai radiation. Equipped with a special SO 239 type coai connector and...

Info

With these code courses from 73 the average person can learn the International Morse Code fast enough to pass the Novice or Tech exam in a few painless hours One of the beauties of cassette tape is that you can take them with you anywhere - at work for lunch break - even in the car while you are driving. With the help of these tapes, you can pass the exam as easy as one two - three cassette code course will teach the IMC at five words per minute, all letters, numbers and punctuation. The tape...

No

Even if youVe limited to just a few square feet ot real estate, you ve got room for a Hy-Gain multi-band vertical antenna. Unquestionably the ultimate in strength and performance occupies minimum ground space. Whatever your requirements you can't do better than Hy-Gain. Hy-Gain Hy-Tower 18 Ht, For 80 thru 10 meters. The finest multi-band omnidirectional vertical antenna on the market today. Entirely self-supporting and virtually indestructible. Takes maximum fegal power with ease. Automatic...

Equipment From

The following fist of gear, unless otherwise noted, consists of brand new equipment purchased for testing purposes only. Some have been tested, some remain unopened in original cartons. We are offering this gear at a considerable discount on a first-come-first-served basis. Please send Money Orders or Certified Checks only to 73 Magazine, Peterborough NH 03458, Deadline for ads is The 1st ol die month two months fir tor to publication. For example January lit is thft deadline iur ihe March...

Twa Serves

While on the way to Dayton the other day I was fed something con tai ning water, hyrogenated coconut oil, sugar, soy protein, isolate, di potassium phosphate, stearoyl lactylate, salt, polysorbate 60, imitation flavor, beta carotene, What was I eating 1701 East-West Highway, Apt. 205 Silver Spring MD 20910 Some months ago I wrote abou t the cost of driving into New York City, WA2CUR wrote in with some comments. He writes that it can cost a bundle to drive into and around the area, but only if...

Standard

Medford, Mass. 02155 (617) 396 5550 What new 2M FM gives me most for my money, performance vs. price The answer's as clear as the superb reception you'll get on the new Standard 826MA, 10 watt, 2 meter FM transceiver. You'll find such outstanding features as 12 channels with the four most popular ones included and a RF output meter with selection of 10 watts or 0.8 watt for battery conservation. And of course, ourAstropoint system that assures top selectivity, great...

Magazine

With us, any authors out there , , . ed) If it takes sexy pictures to sell a radio magazine there must be something wrong with the radio maga- ineT,, W0LFH. (No. not with the magazine, with the buyers . , . ed). What about an AT V column VE2BAQ. (Maybe ,. any volunteers . . ed). Too much FM more DXing articles more fC projects, accessories for the ham station . ,. W6UFJ. More two meter FM. . . Hinckley. Hey, get together with UFJ there , , , ed), FB magazine a few good covers, and few great...

Henry Kultra

There has never been an amateur linear amplifier like the new 2K-ULTRA. Small and lightweight, yet rugged and reliable . all that the name implies The ULTRA loafs along at fult legal power wfthout even the sound of a blower its anode heat is silently and efficiently conducted to a heat sink through the use of a pair of Eimac 8873 tubes In fact, all of its components are the very best obtainable. The price 845.00. The 2K-4 linear ampiifier offers engineering, construction and features second to...

Miller Gang Capacitor

Although you could remove plates, the Miller three gang job looks so nice Ihe way it is I would hate to start cutting it up. Also, a large fixed capacitor such as CI and C2 in Fig. 5 tends io stabilize the oscillator and cuts down on oscillator frequency variation due to collector or base capacity changes. In order to do this you should have a good CI and a good C2. CI is air-insulated and cannot be improved on very much, C2 is a mica-compression trimmer and should also be all right, keeping in...

Concord Communications Systems Of Jacksonville

Jacksonville, Fla. 32211 Attn Jerry Anderson W4iQT Watch for our ad next month featuring limited quantity specials on the famous Concord vidicon cameras including their hand-held 2 3 separate mesh view-finder camera. If you can't wait, call Jerry at CONCORD 1 2 VIDEO TAPE RECORDERS Exclusive sale to licensed Amateur Only W VTR was 1 2 VTR solenoid operated was 1295 400

SN

Litronix and Opcoa's pin-f lt gt r-j gt in tiuuuhi and electrical apecs as MAN-1 at MAN-1, ' LED dot missing NATIONAL EQUALS ON DIGITAL CLOCK on a CHIP Wnn spec sheets amp . for air readouts MM5311 28 pin, 6-dtgrt . 11.50 MMS3I2 24 pin, 4 difcit . , . 8.88 BMMS313 24-pint 6-di it . . . 9,95 MMS314 24-pin, 6-digit . . 11.50 G MM5316 40- pin r 4-diSit t normal alarm sleep timer, snooze alarm, I2-or-24 hr. . , . 14.95 Term add poslupp Ratedi net f Phone Orders...

Zip

CH-6233 Bueron, Switzerland or HB9AIC, Herger Bruno, Wesemlinter-rasse 8, CH-6006 Luzern, Switzerland. Good show, gang A very unique utilization of Slow Scan is materializing on the 20 and 40 meter bands in Cop MacDonald's New Directions Roundtabie. This group gathers at 2000 GMT on 14.253 kHz and at 2230 GMT on 7163 kHz, both on Sundays. Slow Scan is used as an aid in presenting programs on some fascinating subjects and one soon finds himself studying the information presented on the screen,...

Power Amplifier

ALL SOLID STATE, Absolutely no Tubes Pari No TPl 5010 and TPL 5010B bMinearl TPL's Battery Saver series of amplifiers are designed to replace the bulky high battery current TU8E AMPLIFIERS now in amateur and commercial service rn the 14 to 30 MHz frequency range, TPL Sattery Saver1 amplifiers are completely solid state, never require tuning, once adjusted, and can be operated tor hours on an automobile battery without running it down. This is the perfect companion fot commercial and amateur...

Ktwj

For a SoHally Redeeming message, write P.O. Box 205, Peterborough NH 03458 Late October brought several Es openings, which is very unusual for that time of year. The seasonal operators were missing but the regulars were on in force. W3GKV, WB9ETQ, W4GSD, W5BJJV and others were very much in evidence during the openings of the 17th, 21st and 24th. Bob WA0TXV tells mti there were also several daytime openings during this period. WB40SN and W4GDS took advan tage of the opening of the 24th to pass...

Wagx

Having been a prisoner of the nightly parade of TV sports programs, and a devote of good movies from the classic, King Kong to The Thomas Crown Affair, I've been severly bitten by the wonders of video tape. In keeping with my fond memories of rv programs long lost to the archives of program vaults hidden in TV station basements across the nation, be they Kukla, Fran and Ollie, or Edward R. Murrow s Person to Person, Star Trek or The Man From U.N.C.L.E. it seems only natural to at last own my...

Nov

Your November 73 cover is in very poor Taste but does indicate the mentality of the staff of 73, Although I am not in agreement with Mr. Walker in many instances, amateur magazines are not the place for your kind of politics, do wonder where you think the place is for amateur radio politics if not in the ham magazines Perhaps you are used to letting the government trod you into the ground and wish to just give up without a fight, whether you are right or not. Thank heavens not all amateurs are...

Every Unit Represents The Most Advanced Technology The Ultimate In Value For Your Investment

Linear Amplifier Tempo 6n2

Small, but powerful and reliable . . . the 2001 linear amplifier offers a full Kilowatt of power for SSB operation in an unbelievably compact package. It uses two Eimac 3874 grounded grrd modes . . . has a built-in solid state power supply , built-in internal blower, a relative RF power indicator, full amateur band coverage from 80-10 meters and is completely wired and ready for operation. The price . , . 545,00 The Tempo 6N2 amplifier combines most of the fine features of the 2001 for 6 and 2...

LM

W tubes, crystal and original calibration book. Look OK but unchecked. Typical schematic furnished. 8 lbs LM 35.00 Used, look good, with schematic, receiver or transmitter. Frequency range 1.5 to 12 MC. Three bands, VFO or crystal, voice and CW. These sets Collins design, becoming scarce.