For The Contester

THE CONTEST COOKBODK-fhis l ook reveals Ihe secrets of that elite group ol operators who top ihe list when the contest result .ire published. IL contains detailed suggestions for the ftrsUlme coniester as weil as Tips for the advanced operator Domestic. OX. and speciaity contests are ai discussed complete with pnotographs diagrams sno* ir,g the equipment and operating aids used by the top scorers For the senous coniester BK7308 5595

Cb Bargain

C B Coarda missing parts or damaged Can rw oied tot spare 8u , i . ai Qr J - - f Tmals n j'd s* QC 1JT Sm via OPS COO s accepted o o*defs totaling S50 00oi moce FiornJa cesidaots a aa * sales Minimum ortw I Foreign orders US tunrfi only add 20* tor Si H MASTER CAflt-1 h cJ VISA accnpied 7294 NW 54th Si Miami FL 3316 PHJ 305-887 226 S 299.00 12H5.00 S2H9. 0 1314.00 S299.00 f .109.00 S 129.00 1249. 0 A DEN PCS-40002-ME1ER . . A DEN PCS-UK) 2-METER HT SAN TEC 14.U -P2- METER HT SANTEC 440UP...

Thdx

TH5Mk2 Now you can enjoy outstanding broadband antenna performance in a size to most city lots. With 5 elements on a 19 ft (5.8 m) boom, the TH5Mk2 has 4 active elements on each band Hy-G traps and monoband parasitic elements achieve an 8.5 dB gain and an average front-to-back ratio of t9 dB on 20 and 10 meters, and 22 dB on 15 meters VSWR is less than 2 1 over the 20 and 15 meter bands, and from 28.0 to 29 4 MHz on 10 meters. The TH5Mk2 weighs onty 57 lbs. (25 8 kg) And with just 7.5 sq. ft....

Info

CUSHCRAFT other antennas m stock A4 New Triband Roam 10 15 20m AV3 New 10-1 5'20rn Vertical. . ARX 2B Now Rmgo Ranger 2m A32-19 2m Boomer'' DX Beam 220B 220 MHz Boomer. 214B Jr Roomer 144-146 MHi 214FB Jr. Boomer 144 5-148 MHz A147 M 1 1 Element 2m TELEX HEADSETS HEADPHONES C1210 C1320 Headphones PROCOM 200 Headset dual Imp MlC PROCOM 300 tf-wt Headset'dual fmp CABLE RG213 Mil Spec RGS U Foam 95 Shield 8 wire Rotor 2 18 6 22 Mmi-8 KLM ANTENNAS (other .internes -n uto k) KT34A 4 Element Triband...

Rogo Cw Software

Over a year ago I read an advertisement in 73 for a Rogo Computer Products program that could run CW on a TRS-80 I was a lit tie skeptical, but at the price offered (519,95), I wouldn't lose too much if it turned out to be a lemon, i had previously tried several other products that dido1 work too well on the Model L Response lime was very fast I had the product back in less than a week. I received a tape with the program on one side and a message in Morse code at 30 wpm on side B, The...

Trq

Alt mode (FM SSB CW) 25 watts, plus-J The TR-9130 is a powerful, yet compact, 25 watt FM USB LSB CW transceiver. Available with a 16-key autopatch UP DOWN microphone (MC-46), or a basic UP DOWN microphone. 25 Watts RF output on all modes, (FM SSR CW , FM USB LSn, CW all mode. Selectable tSning Sieps of lOiMtz, 1-kHz. 5-kHz. 10-kHz. Six memories. On FM. memories 1-5 for simplex or 600 kHz offset, usin OFFSET switch. Memory 6 for non-standard offset. All six memories may be simplex, any mode. -...

Ham Help

I im oo- .ng for sendee manuals 1 or The Bearcat 210, 210XL. 2tt and 220 scan* ners I would a3sOlike lorieaf from anyone who has expanded the frequency range of Ihese umls Kevin Neai A. Box 221A Flippin AR 72634 i would hfce ro hear from anyone successful In clearing up the 800-Hz tone irom fin.' Cona> modal A52 2m Transceiver I have msialled iheir modification, but this tfJd nol flex 0 Faulkner N4EYE 3413 Covington Dr Augusta GA 3Q9C9 I nee j i t -am jnd mslruct ons tc festring a diai or a...

More Features

Automatic incrementing serial number from 0 to 999 can be inserted into buffer or message memory for contests. Repeat function allows repetition of any message memory with 1 to 99 seconds delay Lets you call CO and repeat until answered Two key lockout operation prevents lost characters during typing speed bursts. Clock option (496 only) send time in CW, Bau dot, ASCIL 24 hour format. Set CW sending speed before or while sending. Tune switch with LED keys transmitter for tuning, Tune key...

Gc

Schematic of power supply with step-start control. 28 73Magazme * 0ctobe0982 (W9RTS). As you may remember, this was a comical poem which supposedly gave the origin of the succulent dish, roast pig. With regard to ham radio, roast pig refers to a much used, or roasted, transformer commonly known in amateur circles as the pole pig ' The dissertation is intended to bring a tear of joy to the eye of the old-timer, to acquaint the newcomer with the meaning of the term pole pig, and to...

Splat Tqmeter

Ca bfjf on us ng fhe 7 75-V, 60-Hz Jine. Fig, 4. Ca bfjf on us ng fhe 7 75-V, 60-Hz Jine. is blank, of course the original scale would show through paper glued to the front of the faceplate. To make the scale, draw an arc on the new meter face, replace the faceplate and connect the meter to a variable power supply through a resistor sized to make 8.5 volts read full scale With a VmA meter, that resistor should be just under 8,5k, The schematic shows a 10k resistor in parallel with a...

Callbooks

RADIO AMATEUR CALL800KS READY DECEMBER 1ST The latest editions of the world-famous Radio Amateur Callbook will be available soon. Tne U.S. edition features over 400,000 listings, with over 75.000 changes from last year. The Foreign edition has over 370,000 listings, over 50,000 changes. Each book lists cans and the address Information you need to send GSL's. Special features include call changes, census of amateur licenses, world-wide QSL bureaus, prefixes of the world, International postal...

Ant

Send for free catalog describing these dual drive beams, our VBF Swiss quads, roof-mount towers, elevation rotators and more Don't wait any longer to start working rare DX Order your dual-drive beam today BY MAIL TET Antenna Systems 1924-E W. Mission Road Escondido, CA 92025 lames F ladd K8IL 5775 Kingfisher ian Ctarkston Ml 4801b After purchasing a Ten-Tec 544 transceiver dnd matching 2 > 2M power suppiy, I bet ame concerned about the possibility of the pass transistor in the suppiy shorting...

Global Specialties 8001 Scope Multiplexer

Global Specialties Corporation has introduced an oscilloscope multiplexer that extends the capability of any oscilloscope from one to two input channels to eight, permitting a direct comparison of simultaneous events. The model 8001 multiplexer accepts signais of 8 volts (10 volts peak-to-peak) through eight BNC connectors and provides a flat frequency response to 12 MHz and only - 3 dB at 20 MHz. Input impedance is 1 megohm. The user can view all eight channels at once, or either of two...

Henry Radio

. serving the electronics Industry for 54 years so far. 2050 South Bundy Drive, Los Angeles. CA 90025 Please send me more information on ARCO Solar Power Systems. Name _ Not all versions of the J-K will have the direct-mode inputs preset and clear . These inputs do, however, make it a more useful device. The preset input may also be called a direct-set input, and the preclear input called a direct-clear input. Direct mode operation. The operation of the J-K flip-flop in the direct mode is very...

Pl Ast Ic Plumbing Pipe

Fyg. 3 al The overall construction of thelO-meter main support is shown. 7he tubing is slit and clamped together with hose clamps, Overall height assuming the base is 2 feet above ground level, is just over 33 feet nety was constructed and tested at W1GV 4 and was found to perform exceptionally welt. How does an antenna such as that shown in b , Ftg 1, work Actually, it can he thought of as simply a ground-plane antenna in which the set ot iradials is brought straight down from the feedpoint....

K

2 Kw CW, 5 Kw PEP input, 1 1 or 4 1 Mounting Bracket for 2 Boom 350 watts PEP. 1,7 to 30 MHz. Low cost High performance Just right for transceivers Small V x V x t V , Light weight 1V oz.l Easy to attach to antenna. No connector needed. Waterproof. AiJ stainless steel hardware won't rust Now you don't have to compromise' Why connect your 50 ohm cable to a 75 ohm dipote Use a RB'1.5 between them to get a perfect match see table for specifications For your 100 ohm quad use a PB-2 For your 300 ohm...

Isu

Fig. 3. a By adding two NAND gates to a NAND-logic RS flip-flop, a level-triggered clocked RS flip-flop is obtained, b Schematic symbol for a eve -triggered clocked RS flipflop. pulse to be LOW for it to be active, while others the more usual case require the clock pulse to be HIGH, An edge-triggered flipflop will allow state changes only during one of the two transitions of the clock pulse. The pulse must be in the process of going from LOW to HIGH, or from HIGH to LOW again, depending upon...

The Old

With my 60th birthday coming Lip September 3rd, I find myself retrospect ing .and wondering how much time is left. I can't compiain, for Ive enjoyed putting out 73 Magazine for the last 22 years and I've had the excitement o being there when many of the interesting things hap pened. Back when II first got into amateur radio. I used to go to the hamfests and be amazed a Ted McEiroy and his ability to copy high-speed code. What a show he put oni He'd tune in some code at around 50 wpm and talk...

Heritage Holidays

The Coosa Valley Amateur Rad o Club will operate from. Rome GA fTom 120QZ October 9 to 22002 October 17 to commemorate Heritage Holidays. 25 khz on the lower side of the G netaM 9ass phone band 60 through 20 meters Special certif cate tor a large SASE Wagon Train mobile on Oci 16 Endorsement to CVARC. Bo 183. Rome GA3016 We are happy to Qrovidp Ham H ip listings tree, on a space-arar'abte tiasfs. We are not happy we to rah , rime from otrter autt amp s to aedpfj amp r crypfrc notes scrawled...

Direction

New Technology patent pending converts any VHF FM receiver into an advanced Doppler Direction Finder. Simply Plug into receiver's antenna and external speaker jacks. Use any four omnidirectional antennas. Low noise, high sensitivity for weak signal detection Kits from 270 Assembled urnts and antennas also avajtable Calior wriie for full details and prices DOPPLER SYSTEMS, lt 602 9981151 S179,OO assembled M 100 A S99,00 assembled 111111 INSTANT REPEATER board

Bight

. - -S.r -- .- -J--- behind the earr it did not cut off his air nor the circulation to his head. The victim swung back and forth and slowly twisted in the night breezes, looking up the rope. The vigilante committee marched away then hid behind a fence and watched, barely able to keep from bursting out laughing. When Pretty Good Actor was convinced they were gone, he fished a knife out of his boot and cut himself down and was never seen again in San Angeio. Today when I hung up my dipole on the...

Comrad Industries Antennas

Com-Rad Industries has just announced the availability of two new antennas in its line of space-saving antennas for fixed and mobile amateur radio operators. The CR-1011A and CR-6A cover the amateur 10- and 6 meter bands, respectively. Each antenna is a full-sized quarter-wave vertical ground-plane that has been rearranged mechanically to be only 5 of its normal height. It consists of a basic helic element with an ad justable telescoping capacity hat tuning ring for resonating the antenna to...

Convenient Top Controls

- Optional MS-1 mobile or ST-2 AC charger supply for operation white charging. Battery status indicator. Complete with flexible antenna, 400 mAH Ni-Cd battery, and AC charger. ST-2 Base station power supply charger approx, 1 hr. . . . - _ - - - - VB-2530 2-M 25 W RF power amps., TR-2500 only , TU-1 ITogiia m ma hie CTCSS encoder TR-2500 only . TU 35ri IJrogramntabic CTCSS encoder Amounts inside TR-3500 only . PB-25H 1 eavy-duty 490 mAH Ni-Cd batterypack. BT 1 Battery case for A A m a nga i ic...

Cra Antenna From Comrad Industries

Ddr Antenna

Your first impression will be What is it The second may be fHow does it work 1' or Hey, that's sure different wonder what it's for My neighbors thought I had left a fancy dish on the top of the car, and my wife remarked that it looked like a flying saucer whatever they look like . To me, it looks like a directional discontinuity ring radiator, or DDRR., .which is exactly what it is, Okay, I guess I do owe you an explanation about the mystery, so let's take first things first. A few months ago...

Cushcraft

A3 3 Eiemtrn Tn amp and fi amp arv 172.54 4 4 Element Trtband 9earn S224.50 A743 7 amp 10 Mh Add On or A3 150 A744 7 A TO MHz Add On tor AJ 1.20 AV3 3 BmmcI Vertical ift20m 44.20 AV4 4 Band Vertical 10 gt 4 jm 81.50 AV5 5 Barn VeMicai IQ-HOrr-. MB.50 32 19 flflo i 9 t'fmen 2m Sfii SO 2149 Jr BtM iT gt cr 14 Element im 166.00 A147 11 rt i Etemftni Anl n 137. A147 4 2 V i Element Antenna 23.75 ARX 2B 134 164 MH Ringo Ringer n 34.00 A144 10T 145 Mh 1Q Befnenl -44.20 A432 20T 432 MH 20 Bftmenl...

Amr

Note The Splattometer was one of the honorable mention winners in our Home-Brew Contest. W1BG will be receiving a 50 bonus in addition 1o his normal article payment. Penn doner U 1BC 459 Lowell Street Andover MA 01810 The most common way to abuse a sideband signal at the transmitter is by overdriving the output amplifier, That generates splatter, spurious signals which tan cause interference up to 50 kHz or more from the normal transmission frequencies. The Splattometer connects easily into...

Tsp

Grove Cvr Scanverter

RTTV interface for the TRS-SO color computer by Ridge Systems, RTTV interface for the TRS-SO color computer by Ridge Systems, announced the model 4511 RTTY interface for the TRS-80 color computer, The interface plugs mto the Program PakTW slot and contains ail the software and hardware in a ROM cartridge. The five pin DIN plug on the back of the cartridge provides the EIA signal connections to your terminal unit. Operating features include keyboard control of the message and operating buffers,...

Rx Noise Bridge

01X2 2 gang broadcast receiver-type capacitors. 600 pF per gang C3t 04 500-pF ceramic or mica transmitting capacitors high voltage G5T 06 ,005-uF. 200-V disc R1 39k, Yz W R2 4.7k, Va W R3 25k pot L 15-uh variable inductor D1 1N34A germanium diode Ml 0-1 mittiammeter 51 DPDT ceramic wafer switch, two section 52 DP4 position ceramic wafer switch, two section 53 SP multiple position, to match number ot connections required

Souid Plan E

Short Backfire Dipole

An open canity two wavelengths m diameter and one-q u arter wavi gt I en gth deep I dii I led a hole pal-tern in the cavity center to allow experimentation with different feeds or rotating the reed polarization. The radiation pattern is symmetric with a halt-angle re sponse ot 30 degrees to the 10 dB level. The dipole feed is formed Irom two concentric piet es of thin-wall brass tubing that comes in telescoping sizes at a lot at hob-b shop The outer lt onduc-tor has an internal tliameter of...

Dual Drive Tribanders

20, 15 and 10 meters Wideband, Low SWR. No tuner needed Exclusive phased dual drive gives higher gain Exclusive coaxial capacitors have lower tosses, higher Q Transmitter power is radiated not lost in the traps Full power low loss balun. Gives improved beam pattern TET Antenna Systems presents three full size trap multiband beams to meet every amateur ne d 5 element, 4 element and 3 element models all with the exclusive TET dual pnasec drive This famous drive system originated with H89CV and...

Hustler Antennas

If six-meter operation is your dish, you will be interested in three new antennas recently introduced by Hustler. Inc. The 6-M83 three-element yagi features a 6-dB forward gain while maintaining a front-to-back ratio of 28 dB. Bandwidth for a vswr of less than 2 1 is 2 MHz, and at resonance centered on 50.1 MHz, the vswr is under 1.2 1. The suggested retail price is 69.95. Model G-3754 is a vertical, endfed collinear, omnidirectional antenna for fixed station use, and is ideal for repeater...

Palomar Swr And Power Meter

No matter how you look at it, Palomar Engineering's model M-827 swr and power meter is a unique product and the result of a unique idea so much so, in fact, that a patent has been applied for. What can be so different about an swr and power meter, you say WellT the display, for one thing , LEDs that show both swr and output power simultaneously. These are arranged in two side-by-side vertical columns on the front panel of the meter and light up when rf power and ac power, too, I must say is...

Cushcraft R Half Wave Vertical

We all remember the old cliches about vertical antennas, but the problem is that most of them weren't true, I've used vertical antennas with good success over the years and have owned most of the brands on the market at one time or another. Oh sure, if you insisted on ground mounting your vertical, refused to place it in the clear, and just drove any old kind of ground rod into the soii instead of furnishing decent radials, you were disappointed, ,, and have only yourself to blame. On the other...

Amateur Radio Communication At Its Finest

SIMPLE DIRECT CONNECTION to your Transceiver. COMPLETE SYSTEM, built-in Demodulator amp AFSK Modulator with keyboard programmable tone pairs. SPLIT-SCREEN operation with keyboard selectable line location, LARGE, TYPE AHEAD text buffer. TEN, programmable message memories, plus lD s WRG S SELCALs, RANDOM CODE generator amp hand key input for practice, Baudot 60 to 132 WPM. ASCII 110 amp 300 baud. SYNC-LOCK MODE for improved ASCII operation. RECORDER INTERFACE FOR BRAG-TAPE or recording off...