Circle On Reader Service Caro

73 Amateur Radio Today* August, 1993 5 Michael Bryce WB8VGE 2225 Mayflower NW Massillon, OH 44646 Mow that IVe made a complete foof of myself with the Argonaut, it's time to get down and get serious ft's a so time to break out the test gear and the soldering iron, afortg with the manual. Since we have verified that the Argonaut is producing 2 watts RF output, the next step is to be sure the transmitter is producing power on ail bands, A quick check with the wattmeter proved all bands were...

Hong Kong

Eric Lee VS6EL, a keen and enthusiastic amateur since 1977, is up and leaving for Australia. By the time you read this he will have set up home in Sydney. We are sorry to see you leave us, Eric, but wish you well in your new home and hope that we shall be hearing from you when you get on the air soon. Christmas is behind us and both clubs had excellent Annual Dinners. As a result, talk is already in progress about next year's dinner, ft was noted that perhaps we might have a joint Annual...

Info

AH these features by replacing your radio s existing CPU chip Priority Channel requires optional tiardwaref Optional Chip Sotlftt 97.50) Includes Operator's and Installation Manuals 4773 Sonoma Hwy. Suite 132 Santa Rosa, CA 95409-4269 Write or call (707) 539-05 1 2 foT free information 1 Quantity prices available. Dealer inquires welcome You already own the best desktop personal computer ever made. So why use an old terminal program with your TNC when you could have.,. * Multiple Connects...

Amateur Networking Supply

Amaieur Networking Supply has introduced two new products designed especiatly for packet network buitders the IMetnx Diode Matrix Board and the WireModem Adapter. The Nelrix is used to create a network switching node of up to six TNCs The unique stacking configuration eliminates the need for cables, offers significant performance advantages such as higher speed and reliabiiity, costs Jess than similar products, and is compatible with all TNCs. pensive yet reliable piug-m circuit thai connects...

Midwest Wood Products

Display your license and callsign on a 12 or 24 hour solid oak clock. Letters can be changed. Both size licenses accepted. A great gift for that special ham, or for yourself Midwest Wood Products 16141 24th Ave Coopersville Ml 49404 Listings are free of charge as space permits, Please send us your Special Event two months in advance of the issue you want it to appear ini For example, if you want it to appear in the January issue, we should receive it by October 31. Provide a clear, concise...

Frequency Counters

CT-30 9 DIGIT 600 MH2 CT-125 9 DIGIT 1*2 GHz Ramsey E> ocinxncs been mani actufing JXrtC Test gear lor over to years and is racogntred or Is lab quai-iy p-iKJ-ids ai breaMftrough prices All or lur counters carry a tuH one-year warranty on rd utw -V- tpjca peal pride in being the- largest Tianufacturer oi low-cost counters in entire U SA Ci> 'i fflre Spec H CJ I01S. Our counters irefuil ealurad, From .ludia ta UHF. win FET high mpedante input, pnipar w ve shaping circuitry, and Jurabte high...

Decade of Packet

An anthology of 73 packet radio articles from 1983 to 1993. II may seem hard to believe, but the new technology we call packet radio has been gaining popularity with hams for some 10 years now Regular readers of 73 know this magazine has given the subject intensive coverage. Not only will you find Jeff Sloman NIEWO's monthly column, Packet & Computers, but you'll also find a compendium of construc- Chronological Listing of 73 Packet Articles Join the Packet-Radio Revolution, Get errors roe,...

Dipoles

Photo A The Ariane 42L launch vehicle with two strap-on liquid boosters in pre pa ration for launch from Kourou, French Guiana, May 111 1993(Arianespace photo J the direcMo-home European TV satellite fleet. ASTRA 1C weighs 2790 kg. and can carry 34 TV channels through 18 transponders. Stabilization is three-axis and availabEe power is 3300 watts from the sofar panels at the end of the satellite's estimated 15-year life. By comparison, ARSENE is very small at only 154 kg. The craft fs...

Microwave Transverters

SHF S VSTEMS No tu ne I near rran sverters artd transve rtof kits for 903,1269, 1296, 23W.2400. 3456 MHz. All use 2m i.f.gi3 8V Kits indute mixer and i 0 PC. boarcs. utaJ and flE components But jniis rr doi IF O C Ewtchbttrd. connectors and corroaet tow wof'te hotaing Oti f hwtiancy op> t amaieii band avatar SHF 900K M2-306 MHt SOmW IGIS139 Built S2S5 SHF 124DK 1296-1300 MHz lOmW KftS149 3u.itS265 ttf1269K 126A-1272 Oscar Mode LlOmW KHS140 0cJiftS255 SHF 2304K 23Q4-Z30fi IflHl IflmW KltS205...

Startek Ath-30 Review

STARTEK international, Inc. 398 NE 38th Street Ft. Lauderdaie FL 33334 Telephone (305) 561-2211 (800) 638-8050 (orders only) Price Class 235 Photo A. The STARTEK ATH-15 Portable Frequency Counter 34 73 Amateur Radio Today August 1993 nothing to do with frequency counters. It's an LED bar graph signal strength meter. This 10-segment graph sits near the top of the display, and simply indicates relative field strength. By itself, this Is a useful item for antenna testing, foxhunting, or checking...

Rutland Arrays

1703 WARREN ST * NEW CUMBERLAND PA 17070 Orders 1-800-536-3268 Info. 1-717-774-3570 7pm-10pm EST DEALER INQUIRIES ARE INVITED WE DE8IGN AND BUILD ANTENNAS FOR PERFORMANCE NOT PRICE Make and telephone calls from your mobile HT with your own personal autopatch. Connect to Nne and transceiver microphone, PTT, and speaker jacks. mainly made equipment for the miliary. I d just started 73, so this bomb almost put my fledgling magazine out of business. Worse, Ihe AHRL proposed rule change also...

AUG

BURLINGTON, VT The Burlington ARC will hold their BARC 41st Infi. Hamfest at the Old Lantern Campground, Green-bush Rd., Charlotte VT. For camping info, call (802) 425-2120. Talk-in on 146,61 .01, 146.94A34, 146.52 simplex. ARRL VEC Exams. Foi general info, catl David Berteau, (802) 893-7680I RHtNELANDER, WJ The Northwoods ARC, the Rhine lander Tomahawk Rptr Assn., and the ARRES, will co-sponsor a Swapfest at the Sugarcamp Town Hal (12 miles north of RhineEander on Hwy. 17), from e AM-3 PM. VE...

Delaware

Factory authorized dealer Yaesu, I COM, Kenwood. ARRL Publications Calfbook, ARE Hamlinik, AEA, Kantronics, Ameritron, Cushcraft, HyGain, Heil Sound, Standard Amateur Radio, MFJ, Hustler, Diamond, Bulter nut, Astronh Larsen. and much more. DELAWARE AMATEUR SUPPLY, 71 Meadow Road, New CasiJe DE 19720, (302) 3287728, North Jersey's newest Two Way Radio and Electronics Dealer is now open. Sales of Ham, Business, Marine and C,B, two way equipment as well as Scanners, Shortwave, Electronic Kits,,...

Wgr Dsp Filter

J list turn the switch to select one of 4 Filters which enhance SSIt si n ils by reducing hiss, static, ignition, and poweriine noise with no perceptible time delaj combined willi Multiple Automatic Notch filters to remove heterodvnes instantly* 4 Brick-wall C X Filters with tend widths of 50 Hz to 200 Hz. 3 unique linear phase bandpass fitters for RTTY, HF Packet, and SSTV. Install s easilv between the receiver and external speaker nr headphones. Shipping and Hor tiffing t S 5. n'erxcus 15 JO...

Julieboard

An easy-to'build DDS synthesizer for the PC printer port. Every so often, a technology development comes along which radically and permanently aJters the landscape of amateur radio spark to CW, AM to SSB, vacuum tubes to solid-state, and so forth. Each of tiicsc new developments has made possible things which could only be dreamed of before, but quickly become taken for granted, The introduction of direct digital synthesis (DDS), a DSP-related technique, has been one such advancc in the RF...

Ramsey Electronics

ZOW J. the world n mc- t popular low-cost ervn o m lt nn -Far stopl 11 u or umaJI, lhe COM-3 di l- rers .invflnceO rap Mliiifl for a lantatic price arwj Our n amp w lea pco-gram alyou tonwnaCOM-3 For test than 3 TO a day fealurofl OlW t lt n fry keyboaro vv-fii ipi oqrnrrirnntHi memory Audio 1 transmitter Frequency C urtlei LED bar graph Irequency tb r deviaiion display I 10.000 iV Z1 jLf.i-.ji levels High reraire sensitivity, less than 5 v 1 DO tMj to 9995 MH 'Continuous frequency courage...

Circle Oh Reader Service Card

Some are belter than others, but most can be dramatically improved A schematic is included for this project. TexNet Packet-Switching Network. An overview of a highly successful and efficient packet radio network. by Greg Jones WD51VD, GcL 1989, p.54. TexNet is an inexpensive, multi resource, four port high-speed 'backbone datagram-based amateur packet switching system. The author presents an overview of a very fast 9600 baud amateur network. Amateur Packet Networking Going beyond just AX,25 by...

Broadband Preamp

Booai rhose wem sngnals to yojr scanner. TV, shortwave radio or tro-Quencv COunlar F'at 25 dB gain, i lo tooo MHi rati MF RNC connectara. Rune on 12 VDC or 110VAC Pf - , wir rid, incluons AC adapLe' i T. _ _. _. . feai mmto jv Dcppier ensor thai r, i doieci a hu an as ta as i r teof a- iv por tt i amp rr 1 J GH , Hnri .s O bv Hed , hght, or ibrarion3 Dnv 3 wp lo tUO iA ouiput, narmeH v open or tosed, runs or t2 VOC. ompltileJtil MO . DompelB lmi r - sin J PC w Fp -j' - 04- 90D 10- 3SWCW P5H c....

Wv

Acw 2 Vgic iter . a Alarm inpuis, PKi addt Commi oi unravia Pacfcci or Tel. modem ind pre dos a -u. oi to CNC8 HS H q frdi M ft TKli Iric -i f data caLi to PKB PKI 99.95 FM lnt h ni rtdi. m v Dji i mroTO WX1_______SW.95 D 6d lt l 1S toucmon . Works wffll nrminal motttfn projwna Ik _fJilU5 iil lll 51 c amp pmio ranriectw. TTL or HS232 bul rw puuirTt- convene use C Sfl. we baanng w Sdag of ai toion HM1 S 69.95 Air scNi 1 rics, ciiriij- ims and wio 'cpeial S sel uji riiftvji- n. lund with purchase...

Atv

BiU Brown WB8ELK c o 73 Magazine 70 Route 202 North Peterborough NH 03458 ive been asked many times about the pitfalls and obstacles that need to be surmounted in order to successfully build an ATV repeater. This month I'd like to offer you the story of how members of the Fort Wayne Radio Club solved both the technical and political problems involved In Installing a very effective ATV repeater, as described by Jim Pliett K9QMA. The following is his account. f K9QMA am an active ATVer with a few...

Rrt

ART-1 A complete interface system for send and receive on CW, RTTY Baudot amp ASCII and AMTOR, for use with the Commodore 64 128 computer. Operating program on disk included. AIR-1 A complete interface system for send and receive on CW, RTTY Baudot amp ASCII and A M TOR r for use with Commodore VIC-20, Operating program in ROM, SWL A receive only cartridge forCW, RTTY Baudot amp ASCIIJ for use with Commodore 64 Operating program in BOM,

Ez Key Cmos Keyer

Qmid your own mini hjjrn station SonsKlve Eiii-mocle AM. CW, SB recciverE use dlredt conv rsiort design wilh MFfiO tc as topiured In QST afirl riArid-booJ h Vpjy sensilive waclor LunritJ uuer iir gt tine b amp rtd. Plenty of speaker volume Huns on 9V buttery, Very EASY lo build, lots of fun and educal tonal ideal for beginner or o-d pro Mew 30-page manual Add the case sol lor well-fired professional look Your choice of banas .95 Specrlyband Hfl SO.rifVSO HRh 0 HR Oi Mnlching case amp knot set...

Bs W

Subjects including moon bounce on 432 MHz and third-party traffic in relation to packet operation. NK6K gt Packet by Harold Price, Dec. 19S6, p.66. The first large-scale packet radio survey questionnaire is presented. NK6K gt Packet by Harold Price, Ian. 1987, p.70. The author discusses high-speed modems, HF forwarding networks, and restricted BBSs, NK6K gt Packet by Harold Price, Feb. 1987, p.66. The author discusses what should be included in a packet message header, NK6K gt Packct by Harold...

PDATV

Michael J, Geter KB 1UM c o 73 Magazine 70 Route 202 North Peterborough NH 03456 For the past couple of months, we've been examining the nitty-gritty of using that wondrous wrndow into the wacky wortd of electrons, the oscilloscope. Let's finish j1 up. OK, you've got your waveform frozen on the screen. Great You're all ready to go. Hmmm, the pari you want to see is awfully small and squashed. Wouldn't it be nice if you could stretch it all out Well. sure, you can speed up the sweep, but it's...

Circle On Rcadew Service Card

Put your packet station on the money for 20 bucks. Photo A. The FM Packet Deviation Meter makes this station completei Photo A. The FM Packet Deviation Meter makes this station completei There are a tot of plug-and-piay amateurs today, and many are working FM packet. While many traditional amateurs can draw a Besscl function chart with their eyes closed, this new breed of ham is a lot less technical. Many have a hard lime digesting the concepts of bandwidth and frequency drift never mind...

Fluke Multimeters

ScQpemeters lt AII Modeft Avarldbl Ca Modfil 95 J.549 K MariEi 70II 355.00 MOO l 97 Jt.795.0C Madsl 77H i145.0 10 Series ModeH 79 f B W True RMS 4 11S Digit Multimeter M-7MT j DC Accurncy 1 R0S 5t - i 1 w Hi Fun. C gnr amp r Dm Hc.tf K . MSlC F im 4 to 30V 1 Af All Mid l Sifi d IHIH V ifiJ tpfllir l d F ura-E hijn clrcull proled.fi H si.sp l4-t fiiH rtpf3 - j J L Makes a rea school jiroj tl Fu .y is u slKl nd iPH clrcuil pruluclud Sq j irc. Triare PlI c, am 2 Io 2Mr z. F q Ooufllfll 1-1 DM Hi...

See The Space Shuttle Video

Many ATV repeaters and individuals are retransmitting Space Shuttle Video amp Audio from their TVRO's tuned to Satcom F2-R transponder 13. Others may be retransmitting weather radar during significant storms. H it is being done in your area on 70 CM - check page 413 in the 91-92 ARRL Repeater Directory or call us, ATV repeaters are springing up all over - ail you need is one of the TVC-4G ATV 420-450 MHz downconveters, add any TV set to ch 2, 3 or 4 and a 70 CM antenna, We also have...

Bbg

Itable fields with drop-down lists and directly accessible buttons, PPWIN lets you control every aspect of any AEA controller. Forget hours with the manual trying to figure out everything your new controller does With PPWIN all the options are right in front of you or a few mouse clicks away. At startup, PPWIN greets you with a blank gray window and a menu bar, typlcai of any Windows application. The first step is to configure the program using the aptly named Configure menu. PPWIN can handle...

Ar

I'lUuI Pi Krtv.i.im Priori COMMUNICATIONS 10701 E. lOGth St. Iridpls., IN 46256 COD KJL hUy higher FAX lt 317' 849-3794 trotler or controller port thai is opened from the TNC menu. Each of these windows has a gray bar at the top, with various combo boxes, buttons, and status windows. Below are two panes with scroll bars, one for received text and messages from the controller the other for locally typed text This is where you communicate with other stations, but not with the controller itself....

Pactor

Yest the PK-900 does PACTOR, This mode is a lot of fun, combining the qualities of packet and AMTOR for excellent weak-sig-nai performance. The PK-900's inherently ex cellent HF performance is available in PACTOR mode, too. You will find plenty of PACTOR traffic on 10 and 20 meters. It sounds like an AMTOR station on barbiturates. This mode wilt probably eventually replace AMTOR, since it works better for most amateur operations, If you are familiar with AEA hardware, the PK-900 will not...