Radio Amateur 08-1993

Startek Ath-30 Review

Starteck Ath

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...

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...

Non-iambic Modes Cw

MFJ-492 MFJ's new Menu Driven HHQe Memory Keyer lets you immediately enjoy your MFM92 without reading an instruction manual - there's no keypad, no complex sequences, nothing to remember. You simply select a menu by pressing a button. An LED lights to show you which menu is active. You select a feature by pressing a feature bunon. It's as eas> as using a computer touch screen Each menu is clearly printed on the front panel - there's no confusion. From the menu you can save and play messages ....

The Sr Connects To Any Transceiver To Make A Simplex Repeater

Portable or mobile repeater to increase the range of HTs * Emergency repeater Test repeater to hear your own signal * Test for skip conditions * Unmanned hidden transmitter * Calling frequency machine The 7110 has two modes of operation. In the automatic mode the repeater only repeates when there is no reply to a transmission within two seconds. In the continuous mode all transmissions are repeated without delay. The 7110PL has a PL decoder so the frequency can be used without the repeater,...

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...

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...

Synthesized Qrp Cw Transceiver

Superhet single signal recover * FULL OSK Synthesized to 100 Hz * Sln&wave sidetone PIT W- 500 Hi *12 VDC powered IIP + ID dbm Rogged ertiruded chassis - Sensilivrty 0-3 V 2W X 5V X e CW crystal filter * Colts pre-wound CW audio fitter * Silk screened PCB's I m mediate recovery AGC * GUAR ANTEEC TO WO RK' 3-4 watts out * Product of USA Coffiplfita - iu-st add key, power J nlenna 40 Meier Optional adj. speed Shipping & Hand (301)416-0661 FAX MIHI MS 63 435 SOUTH PACIFIC STREET SAN MARCOS, CA...

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,...

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...

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...

Ic Engineering

Ventura Blvd., Suite 125, Encino, CA 9143fi Info Phone 018-345-1692 Fax 818-345-0517 600-FIELD-S8 NO MOHE GUESSiNG WITH ANTENNA COMPARISON PERFORMANCE. The New DIG FIELD instrument has an extraordinary frequency response, DC to 12 GHz, lLDIGl-FIELD can be used as a sniffer for 60 cycle noise sources, as well as intensity detector of microwave oven leakage. With visual deaf reading, you tan make your own calibration. Use for radiation gain loss measurements, antenna patterns, polarization,...

Advanced Electronic Applications

For antenna enthusiasts everywhere. the new AEA SWR-121 handheld antenna analyst provides comprehensive antenna performance information in an easy-to-read graphic format. With its LCD spectrum display, the SWR-121 shows an antenna's SWR curve over an entire frequency range, unlike other instruments which can look at only one Irequency at a time. This battery-operated unit is designed for portability and easy use. For more information, contact Advanced Electronic Applications, tnc , P.O. Box...

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...

Sako Hasegawa

Founder, Chairman of the Board Yaesu Musen Co., Ltd, Tokyo, Japan As an electronic engineer and amateur radio experimenter. Mr. Hasegawa introduced Single Sideband Radio telephony to amateur hands in Japan in 1956. He constructed SSB generators based on the works of his contemporaries in the US, and soon had many requests for complete transmitters and receivers, in 1959 he incorporated Yaesu Musen C&, Ltd. to meet the demand far this equipment. From iiis inspiration and under his guidance, the...

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...

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...

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...

Circle On Reaper Service Caro

Packet Power RO Sox 1fl9 Burleson, TX 76097 I CIRCLE 233 ON READER SERVICE CARD Have your awn repeater or link system Lasjj repealer sclup willtoul mridiilcalion 10 ynur radio unii. simply plu i Li ami pal ktt&J for emergency or portaMcAwbilc jfepcaLofxl JTif liRI-2 wnria wuh ANY rccdvcr (or saailacr) and AMY lijjts-miiicr. Soper scnsiiivo VOX nperm ion fli cs Setup qui k. tndudes Hunf eiJ 1 urn-tun itniern. Passive .hjJio rirecrfkc for cIl wi audio. UnJy 4,yr k 3.5 x .S mid Chokstor 12 VDC...