Radio Amateur 08-1980

Those Fabulous Fifties

Receiver Hro

C Stewart Gitlmor W1FK Spencer Road Higganum C 7 i 64 if Of course, you remember your old rigs, but what was everybody else using 25 years ago I have two different dream station s from 25 years ago One was pictured on the cover of the 25 lt T ARRL pamphlet, How to Become a Radio Amateur It showed a youth sitting in a room that was plastered with QSL cards. Apparently everything the kid needed in order to get those QSL cards was on the desk in front of him A little home-built two-tube receiver...

The Rains of Morvi

Editor's Note The author is president oi the Federation oi Amateur Radio Societies of India, Disaster struck Morvi on the 11th of August in the afternoon. Due to incessant and unusually heavy rains, the earthen Macchu Dam No. 2 burst from both sides of the spill way and engulfed the entire city of 75,1 00 persons, A wave T or ft' high caused the initial damage which devastated 80 of the buildings and left an estimated 10,000 persons dead. The water continued to rise to a maximum of 15 feet, and...

Ten Meter Ox Decade Award

1, Sponsored by the editors of 73 Magazine, the Ten Meter DX Decade Award is available to licensed amateurs worldwide. 2, All contacts must be made on the 10 meter band using only channelized converted Citizens Band equipment or simitar commercial units operating a minimum of 15 Watts PEP output External amplifiers may not be used. 3, To be eligible for this award, all contacts must have been made on or after October 1. 1978. Contacts may be ciaimed for all AM, SSB. CW. or FM, Mixed mode...

Mfj-825 Deluxe Power Sentry

Tftlt NEW MFJ 825 Deluxe Power Sentry is MKTs exclusive Multi Sensor SWR Peak Wattmeter With one unit you can monitor SWR, peak, average power for HF. VHF, or QRP rigs, Secrel It plug-in mors. Ping in up to 3 sen sors ot your choice HF, VHF, or QRP. see below Connect and operate up to 3 rigs simultaneously. Front panel switch selects r q to monitor. Comet with one sensor ol your choice. Use Rcad forward and reflected power on separate meters 2 ranges. 2eo meter movements Read SWR fnrnt 1 1 to 6...

Special

1980 Ham Radios

' Tfiji ' . > m-lH> re t 14 wxtt cut H 1 h inrim vjug-ti ,- rinrjpr lpt1 y Ou W tilth) jl 'e 'kofijin 4 l 11 I r in 1 igrn Kjngi-5 I r +'.HfT ir'fli vCf rsf ii ip HAftti pitfS j r qj taI pvrrunnl hnnrli fig m g m 11 If 91 L> r> r cprd'nq Tngpf*' Iri 11 1 nh > .Illy Ifjr.fcS i n lui WltlrtUOU recordmq fl- F Iff .kM* 1 10 uw n tkiiW AJU.Vyri i . j i> 4 t Ct m +i t uppip 'niii-- a coflviHtvr tiuiH ir> jOO KENWOOD TR-7800 2 Mtr. Transceiver CALL for Discount Price fl- F Iff .kM* 1 10...

Heath Kit Sa Antenna Tuner

Sometime around 1955, t had my first encounter with Heath-Kits when purchased an AR-2 general coverage receiver, it was quite an undertaking, I almost died when If thought of the apparent hopiessness of the bags and bags of screws, resistors, and other assorted parts that l had bought with the pain and agony of foregoing my lunch at school. I was a real novice and really knew very tittle about what was what, but Heathkit apparently knew this and put things in such simple terms that I had little...

On Or A Catalog Write Or Phone

FROM FLORIDA PHONE (305) 771-2050 771-2051 5821 N.E. 14 AVE. FT LAUDERDALE, FL. 33334 David . ttrown IV9CCI RK 5, Bo* 39 NoWe*vi e JN 4MJ60 part I getting there is easier than you think As amateur radio has progressed over the years and we amateurs have been evicted from the lower frequencies for one reason or another, we have continued to operate al the higher and higher assignments until a few years ago, realize that many hams today have gone on to the microwave regions, but usually with...

Communications Corp

fte a 1 f - vi c e se pj ge 195 Kilian N. ablln W9lWt 9124 N OilIVfort Avenue Skokie IL 60076 The US Army made me a radio ham, although that was not the intention When they drafted me in 1941, before the shpotin' began, they somehow had me pegged as a supply clerk, but I was not about to become a shopkeeper in uniform, Fortunately, ail of this happened in a Signal Corps Battalion in South Carolina, and my request for a transfer to the1 Radio Section was finally approved especially after I lied...

Notes from Big Sky Country

Hess Or William C Hess VV6CK PO Box 19-M Pasadena CA 102 KGCX employees during the thirties im luded i to Rt An-nouncer Adolph lystad, who obviously has just left his emp o menf at the Westiand service sfafron to haw his pic lure taken at the Westiand radio station, tngineer George Batrey, later to become a consulting radio engineer in Washington, DC and Engineer Eddie Richmond, who is now ij practicing attorney in Portland, iregon. the dog appeared oat of now...

Specifications

Frequency Coverage 144 to 148 MH Channel Spacing Receive every 5 kHz. transmil Snnplex or 1600 kHz Power Requirements 9 6 VDC Current Dram 17 ma Eandby 900 ma transmil Antenna Hn(jeriaMCw 50 ohms Dimensions 40 mm * 62 mmx Tempo is first again. This time with a superior quality synthesized 220 MHz hand held transceiver With an S-2 in your car or pocket you can use 220 MHz repeaters throughout the U S II offers all the advanced engineering, premium quality components and exciting features of the...

Mfj Kw Versa Tuner Iv

Antenna switch lets you select 1 coax direct or random wire and balanced line. The MFJ-982 3 KW Versa Tuner IV gives you a versatile 7 position an tenna switch that lets you select 1 coax thru tuner and 2 coax thru tuner or direct, or random wire and balanced line fcncapsulated 4 1 bafun. It you already have a SWWwattmeter, the MFJ 982 ts for you switchr encapsulated 4 1 ferrite balun. The MFJ-UbZ 1.5 KW Versa Tuner III is an exceptional value. A(i accurate meter gives SWPh forward and...

Com Pu Cruise

This gadget lits into mosl dashboards no strain even in a tiny sports car like the Mazda flX-7 . and once you nave Ft. every trip is like Hying a 747. The darned tning ells you the time, how fasi you're going, tiow far you've been on this trip or since the la amp l regassing. how many miles per gallon you're getting, either al me instant or the average on the trip . , or gallons per hour at the moment or tor she trip . tenriDeraiure ouiside . inside for coolant temperature, it you prefer oh. It...

Counter Preamp

Wide hand preamps with 20 lo 30 dB gain Improves performance of gt ow pi ce counters considerably. Probe reads oscillators without loading. Generaiors can be sat lo jpwef output avoiding frequent shiits. Atsc for scopes, meters, etc Veiiuabto troubleshooting Powered by 3 pen cells, BNC connecsors Hi Z input. Output is 200 in 400 mv rms into 50 ohms. 100 KHz to 200 MHz 39.95 1 MHz to 500 MHz, 54.95 Order from PAGEL ELECTRONICS 6742-C Tampa Ave Reseda. CA 31335, Send check or MO for ppd. shipment...

Understanding And Programming Microcomputers

-BK7382-A valuable addition to your computing library. This two part text includes the best articles that have appeared in 73 and Kilobaud Microcomputing magazines on the hardware and software aspects of the new microcomputing hobby. Welt known authors and wen structured text helps the reader gel involved in Americas fastest growing hobby. 10,95' HOBBY COMPUTERS ARE HERE BK7322 if you want to come up to speed on how computers work hardware and software - this is an excellent book. It starts...

Cw Station Identifier

Spectrum's Modei ID 1000 automatic Morse CW station iden tiher is a 1-2 channel, stored program unit designed to interface with any existing base station or repeater transmitter - either solid-state or tube. This new IDer features automatic identification of the station, either at completion of activity or at 15-30 minute intervals, built-in ac power supply,, and optional pro vision for 12 V dc battery input with automatic switchover to special Emergency Power ID . CW tone pitch, speed, level,...

Back Issues

I recently offered 115 lbs. of back issues of 73 to the first club or individual to get a message to me. The first contact was from Mmot ND. To date, I have received 76 letters and over 55 phone calls regarding the back issues. Six included SASEs for information regarding the issues. One guy named Jack failed to include his call or return address and the post of fice failed to cancel his letter, so I don't know where it came from I was surprised at the re sponse and am sorry that 1 couldn't...

Aea Kt Keyer Trainer

Advanced Electronic Applications created a sensation among CW devotees with the introduction late last year of the MorseMatic, a superb microprocessor-controlled electronic memory keyer. Now comes AEA's KT l Keyer Trainer, a compact electronic keyer and Morse training device that Incorporates many of the most popular features of the MorseMatic. but is available at a substantially Jower price For someone familiar only with conventional electronic keyers, the lack of knobs and switches on the...

Double Your Pleasure

Work Both 2 aod Meters With Yaesu's New FT-720R The FT-720R series is a compact VHF UHF mobile transceiver that harnesses the incredible power of the microprocessor to bring you top-operating flexibility. Start with the FT-720R Control Head, then add either the 10 watt FT-720RU 440 MHz or 25 watt FT-720RVH 2 meter RF Deck. You can clamp the Control and RF Deck together or use an optional remote cable to hide the RF Deck, The best news is still to come By using the optional S-72 Switching Box...

Kenwood R General Coverage Receiver

With the profusion of new general coverage receivers now coming on the market, the selection may become bewildering to the prospective buyer. But one cost-effective receiver stands out above Ihe crowd Ihe Kenwood R-1000. Compactly packaged 12V x 4 Vi x 8V2 t the handsome styling of the R-1000 is in keeping with the entire Kenwood communications fine. The ruggedly-built receiver has a carrying handle which doubles as a till bracket. Plastic feet are also provided for flat tabletop operation. The...

Little Giant

1980 Ham Radios

The June. 1979, issue of 73 had an article by WQIHI on building custom-configured boxes, it was based upon the reasonable assumption that the average amateur does not have access to heavy-duty sheet-metal bending equipment I recently came across a piece of equipment that made me see the situation from a different viewpoint, however, and this article is based on the use of this Might-duty equipment that is within the reach of just about everyone. The piece of gear I am referring to *s the Little...

On The Bands

August, Is it the pits of HF DX-ing Welt, July and September have some support as being the best time to take the antennas down for refurbishing, too, All three months are nothing to compare to autumn and spring conditions At least when It's August. October, probably the best overaif HF month of the year, is only weeks away. August s a good time to clean up those states you need for five-band WAS on 10-meter sporadic-E and for weeding your garden, The All Asia CW Contest and the Worked All...

Pittsburgh Pa

The South Hills Brass Pounders and Modulators Radio Club will hotd its 43rd annual hamfest on Sunday. August 3, 1980, on the south campus of the Community College of Allegheny County, located in West Mifflin Borough, just south of Pittsburgh PA. There will be ample indoor air-conditioned facilities on the ground floor with tree table space. Electricity for equipment and or displays will be available. There will be hard-surtace parking available, food and refreshment at nominal cost, and airport...

Send For Free Catalog

Power to the Micoder II Microphone (ii used) eliminates need for a battery. Sturdy SO-239 rear panel antenna jack. Chassis-mounted power and external speaker plugs, Improved synthesizer, eliminating need for panel mounted sync lock light. Tuning for Power Amplifier and output power level adjustment is accessible without removing case. Capability of mobile ot base operation (with Model VFA-7401-1 AC Power Supply-13,8 V at 4A nominal, transmit). 1 he new VF 7401 is featured in the latest Healhkil...

Tysons Corner Va Sep B

The National Capitoi DX Association will sponsor DXPO 80 on Saturday and Sunday, September 27-28. 198Q, at the Ramada Inn, junction of Rte. 7 and 1-495, Tysons Corner VA. Saturday s ha i-day sesston will include Phase I of the DXPO Program, an Attitude Adjustment Party, and a banquet with prizes and surprises. Sunday'ssession will feature Phase II of Ihe DXPO Program, Unless you have previously attended DXPO, write to Dick Vincent K3AO, Rte. 1, Box 230, Bryantown MD 20617, for more information,...

The Ms Expedition

In celebration of its 50th anniversary, campers and staff members of Camp Hy-Lake, a summer camp for boys and girls n Guebeck, Tennessee, are planning a canoe trip down the Mississippi River. Hailed to be the first such event attempted by a summer camp, the 1039-mile trip will see two 26-footr 25-year-old war canoes en route from St, Louis, Missouri. to New Orleans, Louisiana. This ambitious event, named simply The Mississippi Expedi tion. will begin on August 11 and end on August 29. The ca...

Ayq Programmable Sound Generator

The AY3-6910 to .i AO inn LSI chip with three osgiltfttcre, three amplitude controls, programmable nois generator, three mixers an envelope generator, and three D A converters that are controlled by 3 BIT WORDS No extsmal poT5 of caps required This c lup hooked to anfl it microprocessor chip or 0uG i (8080. 280 66Q0 etc ) can tie software controlled to produce almost nny sound tr will play Th-r -o noie chords, make bangs, whistles, sirens, gunshots, explosions, bleets. whines, or grunts In...

Divide C Rcuits

J1 .1 - n . . .'' -. gt - -v - the right combination of gates for each particular frequency and the diodes provide isolation between Suppose, for example, that we wish to select 29.50 MHz as the first scanned channel. Table 1 shows that the - 224, -M6, and h-8 gates must be activated, to give a total N value of 248, by the first inverter via a matrix. Note that the - 224 gate is actually made up of the h-32, -s-64, and -M28 gates all tied together to act as a single -s-224 gate. Fig. 5...

The New Aea Model Mt Computerized Morse Trainer Makes Morse Code Easyand Fun To Learn

User May Program Starting Speed. Ending Speed. Practice Duration 5 Letter code Groups or Random Space Common or All Characters Precise Speed Control 1 to 99 WPM (Tailor to Your Exact Requirements), 24,000 Character Answer Book Available (S2.00) For 10 Starting Positions, Random Mode For Practice (No Answers). KT-1 Computerized Keyer With All Features of Above Twiner ts Also Available tn Same Package For SI 29.95, Advanced Electronic Applications. Inc., P.O. Box 2160,...

Partridge Electronics

G3CED Stoadstairs, Kent. En J rrci G3VFA Tel 01144 0843 62535 lease send all reader enquiries directl W. H, Minor 158 Wesley c rrc e Macon LA iU04 electronic data base management for hams The amateur exploring uses for a microprocessor in the ordinary pursuit of his hobby will find the possibilities almost endless. It seems likely that in the not too distant future, all amateur equipment will come complete with microprocessor Most applications will involve some form of...