Radio Amateur 09-1980

Separate Receiver Antenna Jack

For use with separate receiving antenna, linear amplifier with full break n QSK or tran sverters FRONT PANEL HEADPHONE AND MICROPHONE JACKS. Convenient DIGITAL READOUT. Six 0.3r red LEDt BROADBAND DESIGN. For easy op, ration. instant band change no runeup of receiver or final amplifier. From the pioneer. TEN-TEC SUPER TRANSMITTER, Solid-state all the way. Stable, reliable, easv to use 200 WAITS INPUT Or, all bands including 10 meters i with 50 ohm b.id High SWR does not automatical limit you to...

Telex Communications

300 kHz or better on 15, 20, and 40 meters With the addition of a base loading coil, the 1 8HT also provides exceptional 160 meter performance Many 1 8HT's have been in service for 1 5 years or more and they stili deliver original spec performance. This enviable record is the result of Hy-Gain's no-compromise attitude toward materials and construction.The 1 8HT is complete with a 24 foot galvanized tower that supports the entire system without guys in winds up to 75 mph. The top section...

King Of Bogus

The article appearing in the July, 1980, issue of your magazine concerning the Dayton Hamvention was uite well done. Too bad the local news media tends to look upon the Hamvention as just another cause ol traffic congestion and an increase in thepracticeof the oldest trade. However, I must take exception to your remarks about some nut dressed in an Arabian sheik s garb- That nut was my good friend and former fellow-employee, Vince Barman. Vince is also Ash-sheik Abu Ibn al Hees-shash, Emir of...

Avc Switch

Partial schematic of the Drake 2-B avc and muting circuits. replace the pot. My junk box was bare, however hence the quickie repair After the modification has been made, it will be necessary to readjust R48 Proceed as follows to ob-tam maximum receiver performance Set the frontpanel avc switch to the Slow position. Connect a VTVM 5-to-10-volt dc range) to the avc terminal on the rear apron The positive prod of the VTVM should be grounded The rf gain control should be on full, and no...

Touch Tone Decoder

HJGHLYSTABLE DECODER KIT COMES WITH 2 SIDED plated THRU AND solder flowed g 10 pc board 56 s, 2-7402. and al l electronic components board measures 3' i gt inches has 12 lines OUt only 1 9 5 DELUXE 12 BUTTON TOUCHTONE ENCODER KIT utilizing thdi ne ICM Chip Provides both VISUAL AND AUDIO indications' Comes wilh . tone anodi ed aluminum cabinet Measures only 2 3iA 3 3M Comptelewrih Touch Tone pad, boafd, Crystal chip rmd ai' necessary components 1o finish the kie P I E D T ir p i a - p p i T T r...

Hygain Adds Three New Products To Tower Line

Hy-Gain a division of Telex Communications, tnc,, has announced the addition of three new products to its tower line. The HG-70HD. a new 70-foot self-supporting crank-up tower, is the tallest of seven towers now offered by Telex Hy-Gain. The tower is all steel, has four sections, and features an improved guide system providing rigid, close-tolerance structural support while leaving the tube ends open for complete surface galvanizing and unrestricted moisture drainage. This heavy-duty tower was...

High Frequency Circuit Design

Depending on publications written expressly for amateur radio operators is frustrating if you are seeking information about the more theoretical aspects of our hobby. On the other hand, many theory1-books are filled with mathematical proofs and long-winded technical descriptions of ideal circuits that are of little use. High Frequency Circuit Design by James Hardy is one book that falls somewhere in between application-oriented amateur texts and rigorous theory books. Al though it is intended...

I I I I I I

May cancel my membership at any time. 802 805 955 1005 1064 1066 1070 1073 1120 1132 1136 1146 1152 1162 1177 1189 1194 1212 1224 1182 1225 1255 ELECTRONICS BOOK CLUB. Blue Ridge Summit, Pa 17214 Valid for new Members only Foreign and Canada add 15 ., sr_9M Phil Litchfield, WA1 OFP New Canaan, CT At HAL we want to hear what our customers have to say about RTTY practices, problems, and possibilities. So when they talk we listen and respond. The result is that HAL Communications equipment stays...

Warrington Pa

The Pack Rats fourth annual Mid-Atlantic States VHF Confer -ence will be held on October 4. 1980, from 9 00 am to 5 00 pm at the Warrington Motor Lodge Rte. 611. Warrington PA. Regis tration is S3.00 tn advance or 4.00 at the door. The price includes admission 10 the ninth annual Hamarama flea marke on October 5,1980, from 8 00 am to 4 00 pm, rain or shine, at the Bucks County Drive-In Theatre also on Rte. 611. The Saturday conference will include a coc1-tail hour and get-together at 6 30 pm...

Busoriented Rigs

If our ham transceivers were built-in modules like computers, we would be able to buy a rig and then add to it as money and interest dictated. By the use of a common bus structure for the system, it might be possible to build a rig with end panels which are removable so further modules could be added. For instance, the D module could have a small panel space for its control and just screw onto the end of your transceiver, interfacing with it automatically Next, we might want to add a Morse...

Typesetting

Barbara Lan Sara Bedell Un Ja Locke Robert Baker WB2GFE B-LL Gosney WB7BFH Sanger Green Dave Ingram K4TWJ Larry Kahaner WB2NEL . G3ZCZ B Pasternak WA6ITF John Scnu' W F A Peter S ark K20AW in subaudible tones with ASCII coding, With this you would be able to tune in a station, whether on sideband or FM, and read out the call letters immediately on your receiver. Being in the audio spectrum below the passband of your receiver, you would not normally hear the 10, but it would continuously read...

Credit Card Holders May Use Our Toll Free Ordering Number

Wallis Island, Macao, Sudan, southern Sudan, Aland Islands, Cocos-Keeling, Guinea, and the start of a seven-country expedition in Africa, Americans continued to play less and less a role in expeditions, as only three of these were Yanks. A. E. Howell G3JKI came on from the British Embassy in Tripoli, Libya, in late June, work ing with F6CYL on 20 and 15 meters SSB He left on June 27 with no apparent plans to return soon. Documentation is awaited in Newington before DXCC credits will be issued...

Message Memory Keyer

Advanced CMOS message memory 7iwo ( 0 char escfn message stooge Longer message capacity Trample end CO CQ CO DX de WBSYJti WB2VJM K-ther, piay second message on contact-de WB2YjM QSi NV NY 579 579 Paul Pant K Uifl 'or dany OSOs or contests 3oih dot d.'id dash memory m> rimbtc keying < tvith any squeeze Speed volume rone, tune and weight controls Low current dram CMOS battery opera tion p ofia b le Depute quarter inch jacks for key Keys gn< J Week and soitd state ngs WIRED AND TESTED...

District Endurance Award

Swards are too soft, they should take a hard look at this oner It was designed to appear fairly simple at first glance, but will drive you right up the wall with frustration as it is pursued. Known as the District Endurance Award, in order to get it you'll need to find yourself an accurate timepiece, as youll have exactly sixty (60) minutes to work al) (10) ten US call districts. Simple, huh Can you beat the best time to date-45 minutes Sponsored by the 73 Maga zine editors, the District...

Scott Adams Adventures

ASOtP i-fl JOM AN i M CHANTED U*h D E1VCOU*T WNG wtld animals and ua& cal. rt'VjS iW -E 'OU --rifi-COvEft LOST ps ooiSSore r*t oii ' *ppie If - 13 J ) e ' iT*l& +ilfc . TREASUPE iSLANO -Nr. rpv TO HE COVER LQhG JOt+H L H S lost TRE SUPf Or vr f 5AQD2T Tor 1RS lbmwhi 16K, r. AOQ ZS I0f Sor car* 10* *S*< J07A l,. Ap > ln k sis ib oaqh j . j ffirt . -- r tS L 7--- t d SAVE COUNT CHJ5TO FROM THE FJE.NI iStt i Ji-I J UH I ORE VEP BE DOOMED Hh VOODOO fdtr friAMii.ll m- rRH I Livil II...

The Complete Amateur Rtty Operating System

* UHU1UII Marysville, Wo. 98270 J flicroProducts 206-659-4279 206-659-9512 , Reliable Service Since 1963 Small Orders Welcome Free 'Tech-Data' Flyer Toroidal Cores, Shielding Beads, Shielded Coil Forms Ferrite Rods, Pot Cores, Baluns, Etc. 12033 OTSEGO STREET. NORTH HOLLYWOOD, CALIFORNIA 91607 Large, 42 H x 57,r W x 29D Strong groove-construct ion Mar-resistant wood grain finish Options, drawers & face plate

Classic Meter Preamp

i V. r itflfl rriTli pr mp , piiatHDl ifc lt fnasl . Jn.i liliiji - e rrotPii. Orr-.- jnrforml , to r al .' figurv cross tn lult band Equatrv appftcabta fc P AM. nd ' dBtfain 2 dB noise ifgufB i . .- _rr ti'4C corir-etfoTri Mumnijm Oo es M HH S44P0 144 52 64 WHi B O 21 M 135-139 MHj IBNO 2m Preamp Module tSoW TwrmnaH 16-35 U4-14B MHJ io Tfim i eri JSO-239 41.95 430-450 VKj Bls 0 gt 3.5 dB mjiimum NF 33.00 430J50MKi iBNO 2-0 lt JB rninirnuFTi NF 5455 1J gt tfBt PK iNF 90.00 Any trpqufncy 30 and...

All Band Preamplifiers

MODEL PLF employs a dual gate FET providing noise figures of 1.5 to 3.4 db., depending upon the band. The weak ignal performance of most receivers as well as image and spurious rejection are grestty improved. Overall gain is in excess of 20 db. Panel contains switching that transfers the antenna directly to the receiver or to the Preamp, Model PLF 117V AC, 60 Hz, Wired & Tested 49,95 Now you can receive the weak signals with the Airraco PT-2 pre-amplif ier Model PT 2 is a continuous tuning 6...