Radio Amateur 05-1980

Book Clearance

Take a Chance itr f yi Catcula-tor (Uttnum publisher I *BK1002 ras S 95 now 4 50 Chemi hv j Computer E u cor r1 fuoiis -1 BKlOtO was S9 95. no* 5 00 Computer Dic onarv tCamelpt pubhShSFh *BK1Q1 * rj 5 95 no* S3 30 FORTRAN fj- iTun inQ ,Came lot pubJiSherk BK io i9 a as S7 95 r oyi. U 00 pubJtShefi 6M020 -wasS4 95 no* 2 50 a Quick Loot at 9ASIC iCameJot-pdDliSheri 0K1043 Aas 4 95 no* 52 50 how ro Bu1- anr UseMtms and v.-cros iSams publisher *as S9 35 no* S5 00 Ho* to Program Microcomputers Sams...

8p6kx John Webster

Build Meter Yagi

Around 11 15 am and my antenna was blown away, I then put my equipment into cases to try to protect it from the rain. Shortly after, I heard the top of my house breaking away and my cousin who was on the top floor was calling for help He was not hurt but afraid, and t told him to come clown below, which he did Things were flying all about outside by this time, and it was dangerous to be outside We put some boards and things on a bed so that in case of debris falling from the top of the house we...

Simulated Surveillance Video Systems

Since the video camera systems are totally psychologic -nar s the vrsibMit gt and suggestion of vttieo cameras is what deters the thief s des e to steat. all that is realty needed s a device mat appears to be a functioning video camera The SSV System provides ihe businessman with ihe same deter rent to crime as reaJ systems at a traction of Ihe cost, because the Cameras and alarm boxes are em T gt .' e.tromcs -ui t r crook ton'i kno this and SSV Systems are r- tie mei gt realistic in detail....

Speaking About Westlink Department

When 1 took over this shoestring operation fast summer. I never envisioned that it would ing positively vicious in my character groups. I do admit to a fiendish delight and 1 love to see eyes pop open with disbelief when students first try to copy this. Hehr heh The 73 tapes sell through most ham stores 5or 4,95 each Clubs may buy ihem in bulk ten or more per order for a 25 dis count 537 for ten tapes or S73 for twenty lapes. grow as big as it has. They say that every ham finds a particular...

The Kd Is On Display At The Following Dealers

1980 Ham Radios

AG L Electronics Inc Clearwater FLORIDA A fl.C. Electronics inc. Shreveporl, LOUISIANA Communications Center Inc. Lincoln, NEBRASKA Communications World Inf Cleveland. OHIO Conley Radio Supply Billings, MONTANA Custom Electronics Boise, IDAHO Douglas Electronics Corpus Christi TEXAS Esri Dtstnbuhng Co. tdafto Falls, IDAHO Electronics Inc Saiina. KANSAS Hi Inc Council Blulfs, IOWA H. FL Electronics Muskegon, MICHIGAN Hamtronics Inc. Trevose, PENNSYLVANIA Hobby Electronics Center College Park,...

Bw Battery Tool

The new BW-2630 is a revolutionary battery powered wire-wrapping tool. The tool operates on 3 standard C size NiCad batteries not included and accepts either of two specially designed bits. Bit model BT-30 is for wrapping 30 AWG wire onto .025 square pins BT-2628 wraps 26-28 AWG wire. Both produce the preferred modified wrap. Designed for the serious amateur, BW-2630 even includes both positive indexing and anti-overwrapping mechanisms - features usually found only in industrial tools costing...

Jications

95 Kitts Larie, Newington, Conn. 06111 Connectfcul Residents Call 203-667-0811 OPEN MON FRI 10-6 * THURS tO B P M *SAT 0 A EASY DIRECTIONS Rt T5 Soulh Dlocks pdsr M OWaki s (Borlni fumpiN i SUB DEALER INQUIRIES INVITED (Send letterhead for complete package) Reader Service-see page 226 73 Magazine * May, 1980 59 Byron H. Kretzman W2JTP 431 Woodbury Road Huntington NY 11743 The mere mention of the Sterba curtain antenna evokes visions, or memories, of huge multi-element, broadside antenna arrays...

Technical Excellence

Ffytju demand t He no technology, you need thae FSK- OOC demodulator. Can't be outcopi'ed because its desigfl,fcompUter.r ljrade arts, and modern technology offer fandtme copy over radio circuits'* Stops QRM with selectable S5 or TOO Hz, fiiiers and two tone Jimiterless operation Decision level correction improves selective fading Uses either 170 volt, 60 Ma. or RS-2 32 loops We can install your Xitex SCT loo board insider loo Continuously adjustable shift from 1 GO Lu 1000 Hz. Write for...

Review Of The Kenwood Tr Handheld

1980 Ham Radios

I can t remember when I have been as favorably impressed with a new piece of ham radio equipment as I have been with my new Kenwood TR-2400 This new microprocessor-controlled, hand-held. 2-meter FM rig has many advanced operating features that make it compare favorably with many larger mobile and base station rigs that I have used- The TR-2400 covers the entire 2-meter band, with some additional coverage at each end of the band tor MARS operation. Synthesized 5 kHz channels are selected by...

The Pace Communicator Mx

In April of 1979, I decided to buy a hand-held 2 meter rig. I had seen an advertisement on the new Pace Communicator MX and. since was very satisfied with my Communicator II. I decided to buy one. I bought ihe Communicator il because of the excellent reputation Pace has in the commercial two-way radio field. When I decided to buy a Mneter hand-held, the Pace ads for the new Communicator MX intrigued me. Then, at the Two Way Radio Dealers' Show at Denver, I saw one in the Mesh 1 was hooked and...

Vancouver Wa

PHONE (206) 573-2722 IN CANADA Unit 101, 283 E 11th Avenue VANCOUVER, B.C. V5T 2C4 - Kijlduckie us a Tfadtfmart ot Larsen Elec., Inc WHY ARE ANTENNA MAKERS ANGRY AROUT THE NEW AEA ISOPOLE For the first time, ham operators are finding out just how poorly designed most vertical, omnidirectional VHF antennas really are. AEA university level research has proven that most antennas now being offered create unwanted coupling of RF currents onto the antenna suppon structure and coaxial feedtine shield...

Delta Loop Antenna

Delta Loop Antennas For Ham Radio

AM less than 0.5 microvolts for 10 dB S N N FM More than 30 dB S N D N 0 at 1 microvolt Less than 0.6 microvolts for 20 dB noise quieting IN ALABAMA CALL 1-800-292-8668 9 AM TIL 5 30 PM CST, MONDAY THRU FRIDAY Dr. Ken Jenkins WR6MMV 7 1801 Cedar Sireer Newbcrg OR 97132 One of the nicest things about amateur radio is that one often can obtain excellent performance from simple antennas, t recently moved into a new house which depleted my bank account beyond my wildest...

The Illustrated Dictionary Of Electronics

If you have been looking for a comprehensive electronics dictionary. then TAB BOOKS' The Illustrated Dictionary of Electronics (No. 1066) by Rufus P. Turner just may be the ticket. As the cover states, this work (868 pages ) contains Complete, modern definitions for well over 24.000 electronics computer terms The illustrated part comes from the nice springing of explanatory drawings found Many so-called electronics dictionaries have, in the past, been very skimpy in numbers of termsand...

Touch Tone Decoder

HIGHLY STABLE DECODER KIT COMES WITH 2 SiDED. PLATED THRU AHO SOLDER FLOWED G-10 PC BOARD, 7 567 s, 2 7402, AND ALL ELECTRONIC COMPONENTS BOARD MEASURES 31 j 5 i INCHES HAS 12 LINES OUT ONLY DELUXE 12-BUTTON TOUCHTONE ENCODER KIT uiiliring Ihe nt gt lt C M 7206 chip. Provides boih VISUAL AND AUDIO indications' Comes wtlh its own two lone ancd ed anjmtnurr caE' et Measures oniy 2 y amp gt 3 Compiele with T ucn-Tone pad, bn rj, crystal, chip and an necessary compter, en is to im,5n itie kii. For...

Optimized Receiver Sensitivity

For an ideal balance between dynamic range and sensitivity from 2 V on 160 to 0.3 on 10 Meiers response curves four for SSB, three for CW Standard i-f filter is an 8-poie 2 4 kHz crystal Sadder type Options include a 18 kHz 8-poJ pole CW filter and a 200 Hz 8-pole CW filter. iz 8-pote crystal ladder type, a 500 Hz 8 Switch an optional filter from the front panel to put it in series for up to 16 poles of filtering. And the standard CW active audio filter has 450 and 150 Hz bandwidths for added...

Test Equipment

Museo James Dean

RF AND DIGITAL TEST EQUIPMENT YOU CAN BUILD BK1044 Rf burst, function, square wave generators, variable length pulse generators 100 kHz marker, i-f and rf sweep generators, audio osc. af rf signal injector. 146 MHz synthesizer, digital readouts for counters, several counters, prescaler. microwave meter, eic 252 pages 5.95 VOL. i COMPONENT TESTERS-LB7359- ho to build transistor testers iS . diode testers 3 . tC testers 3 . voltmeters and VTVMs 9 f ohmmeters Q different kinds , inductance 3 ,...

Innovators In Digital Communications

One of the Windy City's most prominent hamst Lee J. Knirko W9M0L was featured tn the Chicago Tribune Magazine hist falL Photo by Ken Thompson One of the Windy City's most prominent hamst Lee J. Knirko W9M0L was featured tn the Chicago Tribune Magazine hist falL Photo by Ken Thompson E. J Kundert W8YEK s shackhas changed considerably since we ran a photo of his console on our February, 7975, cover The shack is the CD Communications Headquarters for the city of Delphos OH. For emergency power,...

Mfj New Indoor Active Antenna

Sits On your desk ready to listen to the world Rivals, can even exceed reception ot outside iong wire Unique Tuned Active Antenna minimizes mtennod, Divides RF selectivity, reduces noise outSKje tuned band. Aiso use as preselectOT tor external antenna Covers 300 KHz to 30 MHz in live bands. Ad usiame tele scoping antenna. Controls Tune, Band Selector. Gam, On Off Bypass LED FET. bipolar circuitry 110 VAC, 9-12 VDC or 9 V battery tor portable use. Phono jack or external an 5x2x6 in. MFJ 1040...

Stick Em Up

install this 2m Bi-Loop anywhere needed a simple antenna for 2 FM, one that wouldn't take up to much space or be obvious to the landlord. Remembering the fact that basic antenna designs are fairly independent of frequency, I thought that a traditional HF antenna, scaled down, might just fit my requirements. The end result is the antenna illustrated here. In essence, it consists of two full-wave loops fed in parallel an adaptation of W7C B's Bi-Loop.1 The radiating elements are made from...

Rapid Mobile

1980 Ham Radios

Charge your handheld radio ofi 12 voir source in 4-6 hours Will not overcharge your batteries clue io automatic siiul-oM circuifty. Equipped with a agaretle Hjghl r plug on the input Side, and ihe appropriate charging pJuy on ihn output side. CORD LENGTHS ALLOW F R CONVENIENT USE WHILE CHARGING Models ayaliabJe now for ihe Kenwood TR240O, I he Yaesu 207R Tempo SI, Wilson Mark II and the Wilson Mark V. Other models available at& o please call or write Iot more r. 4 < I 5 9,95 Order by rnaii...

Production Overruns Surplus Materials

Our exclusive making list inquire in writing or t> y Telex Serving domestic and overseas markets 73 Sherwood D Hunnngton. NY 11743 u S A (UNIVERSAL RECEIVED FREQUENCY INDICATOR) Digitize your receiver's dial with the DIAL SPOTTER. Adapts to most Communication Receivers with simple connection to VFO. From 149.95 Write for Data Sheet.

Automatic Sideband Selection

And you can reverse it with the mode switch. SUPER AUDIO* A TEN-TEC trademark, Proper shaping plus low distortion IMPECCABLE SIGNAL Clean Easily ex ceedinq FCC requirements, thanks to meticulous design, fine components, and conservative ratings, HIGH STABILITY. Deviation is no more than 15 cycles per degree temperature change after warm-up. HIGH ARTICULATION KEYING, msec rise and decay time for sharp, clean keying BUILT-IN SPEAKER. Built into the bottom of the cabinet shell. Compression-loaded...

Amateur Radio Triband Beam With Heathkit Assembly Manual

Heath Company the world's largest electronic Kit manufacturer, appears to have good news for any amateur who eve tried assembling a beam anten na, The Heathkit SA-7010 tri-band yagi comes with a slep-by-step manual, something the nam community has been asking for. This 4-element 20-, 15-, and 10-meter beam features three active elements on each band and is said to give 8.3 dB actual gam over a dipole. Front-to-back ratio is listed at 25 dB. A separate reflector is provided for correct monoband...

New Kc Crystals

North 32nd Street Unit -1 Phoenix, Arizona 85008 602 856-9423 We accept checks, MasterCherge, and Vise Prices subject to change without noticc WE ACCEPT MASTERCHARGE, VISA, CHECKS, AND C,D.D.'s PHONE IN YOUR ORDER NO ORDERS WILL BE ACCEPTED UNDER 10,00, NOT INCLUDING SHIPPING MOTOROLA HICRQ-T NPM TRANSISTORS MMT70 Pkg. of 5 52.00 MOTOROLA MICRO-T NPN TRANSISTORS MMT74 700 MHz 12 V 1.00 MMT2857 1000 MHz 15 V 1.99 FMT206Q 1000 MHz O V 1.25

Ij Then Automatically Returneo The Call Which Gave Me Tme To Get To The Raoio

YOU'RE HOW TALKING TO CHARLIE (HUMAN) INSTEAD OF THE ATRBBBB HI HI OK CHARLIE. GOOO SIGNAL DOWN HERE IN FLORIDA. YOU MUST TELL ME MORE ABOUT THE AUTO RESPONSE CO MACHINE IT MUST BE A MICR0L06 (17) The best of both worlds a simple, easy to use video system for CW RT I Y SSTV and an automatic computer station control. Learn a few keyboard commands plug in your transceiver and you're on the air with performance that leaves the others in the noise. With the program permanently stored in...

Rca Power Transistors Npn To Case

Vceo 60 20 Amps Vce 4 250 Watts 52.99 each TRW RF TRANSISTORS PT3551C 15 W output 12,6 VDC 175 MHz Same as 2tf608l but has no stud. 3oO each or TERRITE ROD 3-30 MHz i x 7 * 52.99 each DUAL ELEMENT FUSE Slow Blow 3 Amp 3AG Type NEW TRANSCO COAX RELAYS SPOT 28 VDC 13730 539-95 each NEW RF SWITCHES by MICROWAVE ASSOCIATES MA-7501-DNM 569.95 each 2708 E-PROM TMS4116-2 J L TMS25lb 27l&

Azden Pcs Meter Fm Transceiver

Azden Pcs 2000

One of the newest arrivals on the amateur radio market, the Azden PCS-2000 2-meter radio is quite a radical piece of gear. It is manufactured by Japan Piezo Company, Limited, which has been around for some time. The company is known in Japan as a maker of audio equipment such as microphones and hi-fi tone arms. Perhaps because of its relative newness in the field of ham radio, its outlook toward our hobby has a unique slant. For example, there is no tuning dial on the PCS-2000 frequency control...

Vertical Fixed Station Antenna

The all-new Hustler 220-MH2 vertical fixed station amateur antenna, designated the Model G7-220. was recently introduced by Hustler, inc. The G7-220 marks Hustler's entry into the now popular 220 MHz band and complements their existing base and mobile amateur antenna line.The superior 7dB gain of the antenna, for both transmitting and receiving, makes it the most powerful omnidirectional iVi-meter antenna available. The ail-new rugged design of the Hustler G7 220 antenna keeps the signal...

Another Owner Fights Back Department

Our final item this momh concerns the WR6ABN KGMYK W6MEP RPT 147.84 .24 repeater The story goes something jiKethis. After liberating the TDD system, the next system to fall prey to problems was the old K6MYK WR6ABN repeater. Though nol the nation's first repeater, it is the longest continually operating system, dating back to an era when most repeaters were AM rather than FM. I n November of 79, Art Gen-Iry, its owner announced lhat as of the expiration of Ihe WR6ABN Jicense. the system would...

Picking Up The Pieces Department

Though WA6TDD is now oniy a memory, the channel pair is still quite active. Dave Faraone WA6KOS, who was the last licensee of the ML Wilson operation, had made a promise that another repeater would come into being to replace Wilson. Dave has kept that promise. Currently operating from atop Santiago Peak m Orange County is the new WASKOSjRPT There are a few differences, but not many. In order to appease the many remote-base owners using the same mountaintop, Dave was forced to invert the channel...

Electronics Book Club

Please open my Trial Membership in ELECTRONICS BOOK CLUB and send my 4-volume Robotics Library, invoicing me for only 1.99 plus shipping. If not delighted, I may return the books within 10 days and owe nothing, and have my Trial Membership cancelled. I agree to purchase at least tour additional books during the next 12 months after which I may cancel my membership at any time.

Microcraft Morse A Word Code Reader

An eighs character Morse code reader has been introduced by Microcraft Corpora-lion for SWLs, beginners, and veteran amateur radio operators. It accepts audio signals from a communication receivers headphone jack or loudspeaker and displays the decoded characters, AM text characters - letters, numerals, punctuation marks, special Morse symbols and word spaces - are shown sequentially on the display in moving character fashion. Code speeds of 5 to 35 wpm can be copied depending on the setting of...

Mastercharge Bankamericard

Use your Master Charge or BankAmericard VISA when you order. MAIL ORDERS PO BOX 11347 BIRMINGHAM AL 35202 STREET ADDRESS 2806 7TH AVENUE SOUTH BIRMINGHAM ALABAMA 35233 Icom s fC 551 rs an ai mode 6 meter unft in a compact, easy to use instrument which uses a btiiit-in microprocessor for frequency control and scanning. The no backlash, no delay dual VFO light chopper system is included as a standard feature and provides split frequency operation as well as completely variable offsets. It covers...

Famous Hamtronics Preamps

Let you hear the weak ones too-Great for OSCAR, SSB. FM, ATV, Over 14,OOQ in use throughout the world on all typesoi receivers. De' tue vht model applications* *nere space permits ir 3 * Models astable tocowr any JMHi band in tr e 2fc to 230 MH raficjt m 12 Vdt 2 stages m ldejJ for OSCAR 20 dB gain Mmialur vhi m ode t or tight space s-sue only* n 3 Models avariafu locOver sny4MH band

Electromagnetic

S3 tESO A fRiovocT, wcwri, A-i ' OF p-t-e CIRCUITS, GIVE CCHPOOIT V LL-ES r PfJi AS5L IETVEEN C-LTA E ClRREUT, Gi'-is PtSiSTANt- A REACTANCE 7 PDWER FACTOR 6I EN PHASE A GL fil EFFECTIVE RADIATED PWEPr fitVE STSTEK CAINS AND LOSSES j replacement OF VOLTAGE SOURCE ANft RESISTIVE VOLTAGE DIVIDES VITH EQUIViLEN' CIRCUIT CONSISTING OF A VOLTAGE SOURCE AND ONE RE5IS7DR AN APPLICATEOh. C THEVEMN'S THEDRF , USED TO PREDICT THE CURRENT SUPPLIED BY A VOLTAGE DIVJOEP TO A KNOUN LOAD PHTSloa APPEA AN E....

Hdr Rotator

Telex's model HDR300 matches a rugged heavy-duty rotator with a digital-readout control console. This is a military industrial grade rotator which is priced to be practical for amateur use. The model HDR300 easily handles up to 25 square feet of antenna area with an additional 15 safety margin even in high winds This new rotator has muscle to spare, with a stall torque of 5000 in lbs 567 N m -higher than any amateur antenna rotator currently on the market, it also features a brake holding...

Regency K Programmable Scanner

Regency has come a long way since the introduction of its Touch, a programmable VHF UHF scanner. The K100 was a distinct improvement, and the new K5G0 has even greater flexibility- The K50Q follows the styling ol its predecessors Two touch-pad clusters provide frequency entry, frequency banks, and commands. Frequency range of the K500 is identical to that of previous models 30-50, 144-17 . and 440-512 MHz FM, The 500 nomenclature refers to the 545 prepro grammed ROM channels. By pressing one of...

Ceramic If Filters

15 MOOEM CABLES 10422c wire * sii-cia. OS25P conn & DBS1 6-1 Un' -n rtf tnd S.5 M TQfSSOW Open Frame R ggejl great for mobile use 4 50 ea 5 S20 00 12 VDC Ho m 2 diameter * 1 ' deep PART MOVEMENT 7101 ON NONE ON SPST 7103 ON OFF ON SPST 7108 QN NQNE (ON> SPST 7201 ON NONE ON DPDT 1.00 EA 6 FOR 5.00 6 TV GAMES ON (1) CHIP Gen Instr AY-3-8500-1 28 Pin Plastic Case EVERYDAY LOW PRICE S7.50 ea I ,-J ' ' I T I t i'l I I r.i I If ' 1 I W j ft I t ' II cults solid stale KiV neg ground 5.00 ea 15'...

Silicon Power Solar Cells

nch D'tf Appro 5 VDC ir 00 ' A m rtn-iiqn' FactflryriM mi prie- for nian f volra e ti-wni1 ti tor higher current COnv fls toiai ertei gy i W . COLOSSUS JR. JUMBO CLOCK MODULE Complflp Ajd onlf Tf fttfrfn i mn J Swlit - Hour l-JT SiiT Jl OuH ljI 12 Hour Tunr fomut SO w iff Ki Oc iAiivfi Power Fihluf ftliO LED Br hlrrn Cnilrt.'l Ipep and noD Timin AlJtm ttr nd Ptt inilitil Dir I ONvt - VI Dir ci tt gt i wAiCii

Watt Audio Amp

SlNGlE HVBHht 111 AN HUM tNlS FH DN A Jf . 3 PC BOARD ilNClUDEDi AlrNS DH 17 liOC f. EAT FQR IHIf Pfl lJ CT TWU lttDi AN IhEXFENSIVE iwr LEH-S. H S ) i -if D Mf 5 CDUPMHIE *tlM - rjHmiTKiti LfP' c * t1 i -. MVTSIBIE Bf AH WnHlS IKf Mf LUT NIL H r E Htl I IF 1 I & A4i I CDHPtltt KH ALL fti'fi BIIAflH a y 3-0910 programmable sound generator The AY3-3910 rs a 40 tir LSI chip with three oscilwori inrfe amplitude coniroU. programmable generator three mrxer . an envelop* y nerato* and HI *...

Step Up To Telrex

Professionally Engineered Antenna Systems MONARCH 10,15. 20 Meter Tri-Sand Model TB5EM 4KWP By the only test that means anything on the air comparison this array continues to outperform alt competition and has for three decadvs. Here's why i Telrex uses a unique trap design employing 20 HiQ 7S00 V ceramic condensers per antenna, TeJrex uses 3 optimum-spaced, optimurr tuned reflectors to provide maximum gain and true F 8 Tri-Band performance.

Includes Power Supply

MODEL PLF employs J duaf qate F ET providing noiar ligures of 1 5 to 3.4 db , tiepending upon the bandT The weak tignat ptrrlormanct of mosr receivers as well as imago and spurious rejection are gr aily improved. Overall gain is in fixcess of 20 db. Panel contains switching That trans* fers the tmemna directly to rhe leceiucr or ro ihe Pr amp, Model PL F 117V ACr GO Hi. Wimd & Tested 649.9'B Now you can receive the WEah signals with the AmecO PT 2 pro-iimplifrtr Model PT-2 is a continuous...