Qrx

One of the most frequently heard voices in the Milwaukee. Wisconsin, area is that of Theodore Maddox WA9Q0J. recipient of a Good Guy Citation for his work with Novices. You may have heard him handling traffic whan he was active with Navy MARS, too, call N& HEL. After the Navy Ted jotned a CBer s cluo m order to teach ham radto to CBers which he did with great success We salute Ted for his contribution to ham radio. Joss of our amateur radio spectrum. (See rhe March QRX for more...

Info

Tel (402)331-3228 Fax 402)592-4745 Your Best Buys and Warranties Start With A Free 4 Color Catalog From Cable Network M. Cable Network Wit Beat or Match Anyon s Price , on Comparable Product. 11111 M St. Sifi.,r73 Omaha, Ne, 6S137 LW3.P CF THCit WS Cl-tOi TT-i VOL (JOCA. Cf nO Bill Brown W88ELK 73 Magazine Forest Road Hancock NH 03449 During the STS-37 mission last April some record breaking contacts were made via 70 cm ATV Six selected stations in all made the attempt to uplink live video to...

A

If PV I mwwtwirn* * Till h IptSttoL MFJ Theory Tutor practically guarantees you'll pass the theory part ot any FCC ham license exam Versatile MFJ software is Ctie best computer tutor ever tailor-made for ham radio. You can sludy the entire FCC question pool, selected areas anrt take or pnnt) sample tests Auto, saves each study session (ex sample tests), gives you all FCC lest graphics (ex mono,), explanations of hard questions, pop-up calculator, wei& hied scoring analysis en or chance...

Smt

V you saw it in 73 Call Dan Harper or Louise O'Sullivan. --800-225-5083 73 Amateur Radio Today * July, 1991 35 Photo (I to r) Kai Siwiak KE4PT. Andy Bachler N9AB. Lou McFadin W5DID, John Stabler WB6DCN and Jerry Coles KB5ARA perform pre-launch tests of the SAREX hardware as KSC technician Renee Wolf looks on. On the workbench (l-r) the PGSC (Payload General Support Computer) a modified Grid laptop computer, The SAREX ROBOT box, and the Panasonic VCR monitor, Photo F. Students from the Clear...

Cw Callsign Monitor

Sounds Alarm when it Hears Your Call 'EnOTS efflCW monitoring * AuttfrdlicaVy traces cod * butt-* auato tteiedt * Dow noi rsqutte parted code S39 complete S29 kit St 7 PCB orx y imduoes complete techmcai data) Send SSAE iordeiai ed into ro. GAR DEI ELECTRONICS flft I P.O. BOX 1751 W ST CHESTER, PA 193B0 P.O. BOX 1751 W ST CHESTER, PA 193B0 10 OFF ON REPLACEMENT BATTERIES FOR WC-024K5A-BP-85A 9.6v 600MAH WC-024K5B-BP-85B 12v 2 600MAH

JUL

CANTON, OH The Canton ARC will operate Station WAAL to celebrate the Pro Football Hal of Game Greatest Weekend from 1300-2300 UTC Sat. A Sun. Frequencies 28.350, 31.350, 14,270 and 7.270 SSB, QRM. SWL's welcome. For an unfolded certificate, send your QSL and a 9 x 12 SASE with two units of First Class postage. For a QSL or folded certificate, send your QSL and a 10 business size SASE to Randy Phelps KDSJN, 1226 Deiverne Ave. SWf Canton OH 44710-1306. PORT HURON, Ml The Eastern Michigan ABC will...

Rep Repeater

A premium repeater with autopatch and many versatile dtmf control features at less than many charge for a bare-bones repeater We don't skimp on rf modules, either Check the features on R144 Receiver, for instance GaAs FET frorrhend, helical resonators, sharp crystal fitters, hysteresis squelch. - Available for the 2M, 220MHz, 440MHz, 902MHz bands. FCC type accepted (vhf and uhf commercial bands). - Rugged exciter and PA, designed for continuous duty. . Power output 5-1BW (25W option) on M or...

Mc

NLiil to Radio Fun Forest Rd, Hancock, NH 03449 (Yes, you can cal it in via 800-722-7790 or fax it to 603-525-4423 Oinjifj lU 7.QUplu< 'in T Jwi n 'Hi niri'M*, MMdinmiJ tfiV ii dfUte 11H Bxt cSutatt ptKm Rule SM 9 MiHi tily pu hl rttioft ktfiU fi F005 SSTV with the Robot 1200C Scan Converter and the Martin Emmerson EPROM Version 4.0 Martin Emmerson G30QD 6 Mount Hurst Rd. Hayes, Bromley Kent, England Tel. (011) 44-01-462-4223 Price Class EPROM Version 4.0, 140 Crystal Oscillator Board,. 60....

Mfj B

MFJ, Bencher and Curtis team up to bring you America's most popular keyer in a compact package for smooth easy CW The best of all CW world's - a deluxe MFJ Keyer using a Curtis 8044ABM chip In a compact package thai fits right on the Bencher iambic paddle This MFJ Keyer is small in size but big in features you get iambic keying, adjustable weight and lone and front panel volume and speed conirois (8-50 WPM) dol-dash memories, speaker, sidetone and push button selection of automatic or...

Video

Repeater with this versatile circuit P.C. Electronics 2522 Paxson Ln. Arcadia CA 91007-8537 Price Class 45. Tel. (818) 447-4565 About eight years ago the members of the Keystone VHF Club in York, Pennsylvania, decided to build an in-band ATV repeater (439.25 MHz in( 426.25 MHz out). We decided to add a UHF FM receiver from Hamtronics for center carrier audio detection. Most importantly, the receiver would pick off the necessary AGC voltage to drive the COR (Carrier Operated Relay), which...

Downconverter

Tune in to ATV with this economical kit. 508 Millstone Dr. Xenia OH 45385 513)426-8600 Price Class Kit. 50 Assembled. 70. It's becoming more difficult to find companies willing to cater to the tot builder, but there are a few brave souls out there who have continued to supply project kits to those folks hopelessly addicted to rosin smoke One of those companies is Communication Concepts, Inc . which has supplied many different types of linear amplifier and ATV-rotated kits to hobbyists for many...

Mywmmw

Super Compact Body and Plenty of Features including 40 Memory Channels store reque v cy. Shift direction, Spfit operation Setting, Tone encoder Tone decoder setting (with optional Tone squelch unit), DSQ setting, Tone frequency anrl Offset frequency independently, 'Digital Signal Display and Memory Function The DJ-F1T F4T has special memory channels for transmitting, receiving, and store lTwo Digit ' DTMF Tones, for communication messages. This feature allows...

Down East Microwave

BjII Olson > W3HQT Box 2310 RR1 Troy. ME 04987 Photo E Will 10 GHz contacts he possible between California and Hawaii (Author .v setup at Palos Vcrdes, California, pointed towards Hawaii). Loop Yagis. Pawsr Divide r . Slacking Frances, Complete Array of 902, 9lQ. 1269 T296 1691 2304,2401 3456 MHz For Tropo. EME, Weak Signal. OSCAR ATV fte peaiera, WE FAX, Commercial point to point Available in Bltl Olaofi, W3HOT Ho* 2310, RR Troy, ME 04987 up the mountain, passing through the different...

Hour Shipping

Photo C The KH6HME QSL 'card'L to Chip Angle N6CA confirming the record-breaking 1296 MHz contact of 2472 miles, Photo courtesy of KH6HME. the 1,000 foot level within the high pressure air fallout, surface winds especially those cool moist winds associated with large water masses keep the descending air from bottoming out on the surface of the earth ocean or land mass . This creates a band of warm dry air associated with the high. L'capping ' coal moist air below it. If the winds are gentle,...

Accessories

TD-3 SUBAUDIBLE TONE DECODER ENCODER kit Adjustable for any tone. Designed especially for repeaters, with remote control activate deactivate provisions 24 COR-1 ki Complete COR and CWID all on one board for easy construction. CMOS logic for low power consumption. Many new features. EPROM programmed specify call 99 COR-3 RFPtATER CONTROLLED kit Features adjustable tail amp time-out timers, solid-state relay, courtesy beep, and local speaker amplifier 49 CWID kit. Diode programmed any time in the...

Satellite Monthly Audio Codes

900 HOT-SHOT, Intended tor testing only. S3.50 per call, BNB976 AZDEN SERVICE by former factory technician. NiCds 36.95 plus shipping. Southern Technologies Amateur Radio, Inc., 10715 SW 190 St. 9, Miami FL 33157. 305 2383327. BNB979 COMMODORE 64 REPAIR Fast turn around Southern Technologies Amaleur Radio, 10715 SW 190th Slreet 9, Miami FL 33157 305 238-3327. BNB982 TRAVEL HIGH INCOME Radio officers needed for shipboard employ mem. Must have FCC Second Class Radiotelegraph license and...

Mfhqb

Select any of several antennas from your operating desk with these MFJ Coax Switches They feature mounting holes and automatic grounding of unused terminals They come with MFJ s one year unconditional guarantee MFJ-1701, 34 95. Six position antenna switch SO-239 connectors 50-75 ohm loads, 2 KW PEP, 1 KW CW, Covers 1.8-30 MHz. 10x3x1 V inches. MFJ-1702B, 21.95. 2 positions plus new Center Ground. 2.5 KW PEP. 1 KW CW. Insertion loss below .2 dB. 50 dB isolation at 450 MHz. 50 ohm. 3x2x2 in....

Spectrum Probe

Converts your scope into a 100MHz spectrum analyzer Ihoughl you cauldn 1 Iford eally goexl QSLs7 These high quality RAISE'EJ PRINTED cards can bp in your hands for only Ac each' Your choice ol 4 colors ol 67 lb brislol a i.i k Gray, YnflOW- 0FueF ivory We fjrint fl blue mk in cJu- format shown liyuu don't jinn't the state outline, we can remove it and make the callsign targe to balance Mn- card NO EXTRA CHARi i tnr ARRL logo, or extra wording tl wehavethe room OrcJer with confidence these art...

Circle On Reader Service Card

Gregory Lask

Leavey M.D., WA3AJR 6 Jenny Lane Baltimore. MD 21208 With appropriate ruffles and flourishes, am pleased to note thai this monlh begins the I5lh year of RTTY Loop Raiher than wax nostalgic, as I often do at anniversaries, Jet me usl say thai this column has covered a loi of ground these many years, and has evolved in more waysihan one. This month, to start out. I'd like o drop back to a basic quesiion This was prompted by a letter from Gregory Mclniire KE0UV of Belle Fourcfte. South...

Circle On Header Service Card

1 he PacComm TINY-2 Packet Controller popular, low cost packet controller ideal packet controller tor the newcomer ideai as a second or third TNC use as a digipeater, network swilch, or node - TNC-2 compalible tulty ROSE. NET ROM t and TheNet compalible ideal for use with the PacComm FSK-1 satellite modem or Ihe PacComm NB96 modem for satellite access the Personal Message Syslem ha 13k bytes of RAM, messages are retained when powered off supports Bulletin Identifiers BlDs . message forwarding...

Circle Oh Reader Service Card

Bill Bily WB9DIG buitt the prototype shuttle ATV downcorverter using parts of a Motorola HT and TV IF circuitry suggested by Torn O Hara W60RG also known as FAR Ctrcuils , the low neon verier was built on a custom PC board to produce a very compact package which integrated nicely with ihe rest of the SAREX equipment, Enhancements to the shuttle's receive system and ground station capabilities should result m even better performance in future missions. A lot has oeen learned by Ehis expenment,...

Sweden

Rune Wande SM0COP Frejavagen 10 S-155 00 Nykvarn Sweden Some years ago 26 European Telecommunication Authorities agreed upon simplifying the procedures for radio amateur operators to use heir ham equipment while visiting CEPT member countries The resuil is that no visi Photo A Oded Schremer 4X4SO with QSL sorters at 'Box 88 Moscow the Central Radio Club Photo A Oded Schremer 4X4SO with QSL sorters at 'Box 88 Moscow the Central Radio Club tor license has to be applied for. You only bring your...

Shortwave

1991 PuBsport to World Band Radio by ftjternahonni ftnunfi-asiini Swifts. Lid, You can Ernve ibe world n v,iur firienip . gt j 'II get the Jaticin and lime mh the 1 1 Bayet's Guide and more SI6.50 O D i DJCer Directory, 1990-ii Edition compiledbi f-rrd mnan M.- i .-'Htplete d1 rid ' fjuenen ew' Features met l amp OO hMenen amp um over 75 cooflirw-L included it full information on over t00 radio cluhawi l idu idc W.9i I5 02 Scanner and Shortwnvt Answer Book by Bab Grttrt Whether you have...

Vsb

NEW VSB-70 ATV Transceiver the only amateur television transceiver utilizing VSB Vestigial Sideband technology to minimize adjacent channel interference and preserve spectrum space built-in UHF GaAsFET preamp to improve reception covers the 70 cm bandr 420 - 440 MHz inter-modulation distortion less than -42 dBc one watt PEP output monitor transmitted and received signals on your standard TV receiver audio and video input via front panel W-pm camera jack or rear panel RCA audio and video inputs...

Micro ATV Transmitter

Can the Dick Tracy video wristwatch be faraway Ever think about going pedestrian mobile with ATV from your shirt pocket If so, here's a project that will enable you to do just that Thanks to the availability of a new packaged oscillator produced by RF Monolithics. Inc t of Dallas, Texas, the dream has now become a reality. Most non-synthesized methods of transmitter design for VHF and above require the use of frequency multiplier stages in conjunction with standard crystals. Physical...

Communications Electronics

Has expanded to our new two acre facility and World Headquarters. Because of our growth, CEI is now your one stop source for emergency response equipment. When you have a command, control orcom muni-cations need, essential emergency supplies can be rushed to you by CEI. As always, for over twenty two years, weTre ready, willing and able to help. Our RELM two-way radio transceivers were especially created for government agencies When you need to talk to police, fire, ambulance, or state, federal...

Kcccc

Bottom layer, b . Top layer, tef a 74 size drill hit for all holes. Be sure to solder jumpers between the top and bottom layers where indicated for efficient grounding. able resistor R8 sets the proper pedestal clamping and restores the DC level. Without clamping and DC restoration of the video waveform the sync pulse amplitude tends to change with variations of scene illumination. This has the undesirable effect of loss of sync and tearing of the picture....

Delta Research

PO B gt 13677 - Wauwatosa, Wl 53213 FAX or Phone Weekdays 414 353-4567 299 Inc. interfaced Components for Cabling. Check, MO, VISA or MASTER Accepted - 4 for S amp H i Sl Wl Res. Add 5 Sales Tax Andy MacAflister WA52IB 14714 Knightsway Drive Houston TX 77083 The Shuttle Amateur Radio Experiment SAREX on the STS-37 Atlantis mission was a success, in spite of a broken wire precluding two-way packet and slow-scan television SSTV contacts with the crew. SAREX is a joint effort of NASA, tha ARRL,...