Radio Bookshop

VHP ANTENNA HANDBOOK BK736S The NEW VHF Ar-ienna Handbook detajls the theory, des-gn and construction of hundreds of diffeieni VHF and UHF antennas , A practical book written tor the average amateur who takes joy In building, not full of complex for rtiulas for thfc design ena Ineer. Packed with fabulous an-lenna projects you can build 5.95* THE GIANT BOOK OF AMATEUR RADIO ANTENNAS O er 450 pages ol d< s ideas, theory and reference data make this book live up to rts tine The 7 chapters cover...

M

Moving the 7M res sfor inside the IM-17 allows two test leads (plugged into the accessory jack) to be used for all functions. work is that they place too much voltage across the test leads. For instance, when m-circuit measuring the 10k resistor shown in Fig 3 using a meter which has 1 5-volt Ohms batteries, the Low-Ohms range produces enough voltage across the test leads to cause the transistor base-to emitter junction to conduct, The 10k resistor would be shunted and a false...

Antennas

420-450 MHz J-beams 48 eL 15.7 dBd 75.75 88 eL 18,5 dBd Ask 1250-1300 MHz loop yagi 1296-LY S49.75 Send 36C stamps for full iietaiK of all our VHF UHF Ucms. Pre-setettor filters Transverten Low-pass filters Converter vSA L Sptnrum International, Inc. **** Post Office Box 1084S Prevent OSCAR 8 Mode J deense Use MMF200-7 142.95 Stop receiver IMD birdies Use PSF432 59.95

Info

The introduction of the WAYFARER by Yaesu is the beginning of a new era in compact solid state transceivers. The FT-707 WAYFARER offers you a full 100 watts output on 80-10 meters and operates SSB, CW, and AM modes. Don't let the small size fool you Though it is not much larger tlan a book. this is a full-featured transceiver which is ideally suited for your home station or as a traveling companion for mobile or portable operation. The receiver offers sensitivity of .25 uV 1QdB SN as well as a...

Hr

A bifi to amend the Communications Act of 1934 to permit the F d rai Communications Commission to employ voluntary services for purposes of monitoring violations of the Act by amateur and citizens band radio service station operators and for purposes of preparing and administering examinations for certain amateur station operator licenses. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That section 4 f of the Communications Act Of...

O

Audio signal processor circuit schematic. Notes All op amps are 1 2 LM1458 except Ht which is 1 2 CA3240. All diodes are 1N4148. Logic power is Vdd 5, Vee 6, Vss Op amp power is 5 and 6 Vdc. of 10 and further filtering above 724 Hz, Amplifiers C and C are identicaf second-order fow-pass fitters tuned to a frequency of 469 Hz with critical damping. These filters and the commutative filter described beiow were designed using the methods given in Get Notch Qs in the Hundreds ' by Mike...

Basic Programming Assistant

The BASIC Programming Assistant utility program helps you to code and debug BASIC programs. Writing and debugging can be a frustrating, time-consuming process, especially for lengthy programs, BPA helps you control and crack the variables, BASIC words, and line numbers in your programs- It reduces the time and effort needed to get a program running properly, 1, BPA will list the variables used in a BASIC program. You can have BPA list only a particular variable, list all the variables, or list...

Tentec

G.I.S.M.O. 803 366-7157 2305 CHERRY ROAD ROCK HILL, S.C. 29730 .Rttfrr Service see page 1U 5 MODES CWr Baudot, ASCII, memory keyer, Morse code practice. TWO MODELS MFJ-496, 339.95. 256 c aracfer buffer, 256 cfraracfer message memory aufomaf c messages, ser a number ng, repeaf cfe ay. MFJ-494, 279.95. 50 cftaracfer buffer, 30 character memory automatic messages. MFJ brings y Hi a pair ol 5 Mode Super Keyboards that gives you more features per dollar than any other keyboard available You can send...

Charleston Sc

The Charleston Amateur Radio Society, Inc., will hold its eighth annual Charleston Hamfest on July 18-19, 1981. at the Omar Shrine Temple, 44E Bat tery Street. Charleston SC There will be overnight security guards and refreshments available. For more information, con tact the Charleston Hamfest Committee, PO Box 30643, Charleston SC 29407, or phone 803 -747-2324 496-3660. Robert 8. Grove WA4PYQ Rt Box 156 Bfasstonn NC 2 902 While inexpensive digital clocks are plentiful on the marketplace, the...

Examples

OT-11 Catalog Number 4 112 8 4 75 KHz CS, F-13 Holder, 24PF OT-l 4 Catalog Number - 4 3 3 2 1 3 10,5 MHz , CST F-605 Holder, 20PF OT-1140 Catalog Number 4742 1 0 120 MHz', CS. F-605 Holder, Series 'Alt 4 Series Catalog Numbers require crystal frequency specified by Customer INTERNATIONAL CRYSTAL MFG CO. INC. 10 NORTH LEE OKLAHOMA CITY, OKLA. 73102

Dflk

Horst Ballenberger DLSWL 64,472 SMIRK number and state, province, or country, SCORING Count 2 points for each SMIRK contact, 1 point for non-SMIRK QSOSh Add QSO po ts and rnuftiply by number of states, provinces, and countries worked for final score. AWARDS Trophy for overall high score. Certificates for high score in each state, province, or country. Note Unless there are fewer than 3 active 6-meter operators In a state or country, a minimum of 3 valid entries must be received from that...

Vanguard Labs

NY 11423 T his antenna is for your 2300 MHZ down converter, Design gain of up to 20DB Some assembly required Variable voltage. I50MA power supply for down corwertars 8V-I5V 3300 MHZ antenna only 45.00 5.00 Power supply kit 35 00 2 00 Power supply PC board only 5 OO PPD 3300 MHz PC fiaartf w Oit tfi.00 PPD T his antenna is for your 2300 MHZ down converter, Design gain of up to 20DB Some assembly required Variable voltage. I50MA power supply for down corwertars 8V-I5V...

Rochester Hamfest 1981

The Atlantic Division New York State Convention, combined with the Rochester Hamfest, will be on Friday and Saturday, May 15-16, at the Monroe County Fairgrounds, Rte. 15A, Rochester NY. Commercial exhibits will beopen from 1 00-9 00 pm Friday and from 8 30 am until 6 00 pm Saturday, A huge outdoor flea market will open at 1 00 pm Friday and run contin-uousfy until closing Saturday evening. Programs include an NTS Forum with Bob Halprin K1XA, Asst. Comm. Mgr., ARRL a League Forum with Pres....

The CES Simplex Autopatch

One of the most controversial devices in a well-equipped repeater ts its autopatch. Some hams use autopatch facilities frequently, as part of their daily life, while others are very uncomfortable with autopatch usage for routine communications. Many re peater groups permit their autopatch to be used only for emergency calls or set strict time limits for routine calls. Whatever your views on autopatching are, you have to admit that in congested areas where repeaters receive heavy use,...

Rht

J bill me for 1 year of 73 Magazine at 25.00 Canadian 27 1 year only US funds. Foreign 35 1 year only, US funds Please allow 4 to 6 weeks for delivery 73 Magazine PO Box 931 Farmingdale, NY 11737 Without the endless fillers on station activities and club news, 73 is able to publish far more information - gt .valuable information, - ,on hamming and ham equipment. You may or may not be a pioneer, but you certainly will want to keep up with what is happening and whai the new rigs are going to be...

The Program

JS amp A commissioned Mark Rickerson to paint ' AMSAT'-a painting to be used exclusively for this space effort. From this painting, JS amp A has arranged with Rickerson to produce limited edition prints signed by the artist. JS amp A will contribute all prints and the full costs to produce these prints to the program. Only the cost to run the advertisement in a magazine will be covered by the initial proceeds. Each print has a 26 x 35 image size on a 34 x 42 piece of museum-quality PH balanced...

Ham II Roto

Shortly after I installed my new CDE Ham III rotator, I decided that there just had to be a more convenient method of operation. Being basically lazy, I am fundamentally opposed to the manual manipulation of switches required. Press brake lever and holdH press rotation switch and hold until antenna is at de sired heading, release rotation switch, and release brake switch a few seconds later. With the state-of-the-art of electronics, I knew that there should be a better way. I contemplated the...

Communications Specialists

4x6 Elements Yagi

426 West Taft Avenue, Orange, California 92667 800 854-0547 California 714 998-3021 lames N. Barrie VFAFK 51 Alexander Avenue Pinawa, Manitoba Canada ROE HO Canadian hams go up, up, and away Seventy miles north of Winnipeg, on the western shore of Lake Winnipeg in Central Canada, lies the small fishing village of Cimli. The town's main claim to fame is in being the oldest existing Icelandic community in Canada. Gimli Air Force Station, now an industrial park, was for years a pilot training...

Bill

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