Rs

PtMitiMHHi * I tottt tl 11 USE VOUR COMPUTER TO DECODE DTMF TOUCHTONES * RECEIUE ALL 16 DIGITS AS FAST AS THEV CRN BE TRANSMITTED + EASILV PROGRRM VOUR COMPUTER IN BASIC TO DECODE MULT1DIGIT STR NGS,DISPLftV DIGITS, SOUND RLRRMS, OBSERUE SECRET CODES * SIMPLE TO INSTALL,HOOK 12 UDC, AUDIO & TWO WIRES TO VOUR COMPUTER ENTER R SIMPLE BRSIC PROGRRM (PROUIDED ) RND BEGIN TO DECOOE * INCLUDES ORTR LED

Aug

The 1986 ARRL Roanoke Division Convention and 11th annual Hamfest and Computer Fair will be held August 23 and 24 from 9 a.m. to 5 p.m at the Virginia Beach Pavilion. Admission is S5 in advance, 6 at the door Flea-market tables 5 per day, electricity 10 extra for both days. Pre-regis-tered exams given Sunday at 9 a m. For information and tickets, contact Manny Steiner K4DOR, 3512 Olympia Lane, Virginia Beach VA 23452 & 04)-340-6l05. The St. Charles ARC will sponsor HAMFEST86 on August 24 at...

All Our Products Made In

Quality Communication Products Since 1932 At your Distributors. Write or call 10 Canal Street. Bristol PA 1< XX)7 SPECIALIZED COMMUNICATIONS OR TODAY'S RADIO AMATEUR If you are ACTIVE in FSTV SSTV, FAX, OSCAR, PACKET, RTTY, EN IE, LASERS, or COMPUTERS, then you need THE SPEC-COM JOURNAL' Published 10 Times Per Year By WBOQCD (Serving Amateur Radio Since 1967 )

Miscellany

The QSL Bureau via Reseau des Emetteurs Francais (REF) address now is BP 273,81209 Maza-met, France. While HQ is still in Paris, some activities are being decentralized to save money. SWLs have received an official call after waiting for years. Now they can send nice QSL cards, like F11XYZ, Other modifications include FF for club stations for example, F6KXY becomes FF6KXY Corsica is IK instead of FC Antarctica and Australs Islands are FT instead of FB. Law Story Very bad news now it is not...

Yaesu Ftgx

Yaesu USA has introduced the FT-767GX HF VHF UHF multimode transceiver, The FT-767GX comes equipped for HF operation, and optional modules are available to extend coverage to 6m. 2mt and 70 cm. The rig outputs 100 Watts on CWH SSB, AM. FM, and FSK. Factory-installed features include an automatic antenna tuner for 160-10 meters, a CW filter, an electronic keyer, a speech processor, a digital wattmeter swr meter, and a dual-vfo tracking system tor OSCAR or repeaterop-eration. ,759.95 modules for...

Using The Aooo Predictions

Apogee predictions for the month of August are provided for three sections of the United States Washington, D,C, Denver, Colorado and Los Angeles, California. Times are in UTC and apogee in this case js mean anomaly 128 rounded to the nearest whole hour Use the chart as a guide in aiming your antenna, then fine-tune the azimuth and elevation values to peak the satellite's beacon signal, it you require more accurate orbitai predictions, contact AMSAT at PO Box 27, Washington DC 20044.

Info

Los Precios Mas Bajos en Nueva Yor*.,, MAY Wo Help You Wltfl tHe Best in Commer dal And Amateur Radlos Jan KB2RV. Toni, Kttty WA20AP. Marfc K2C0N KITTY SAYS WE ARE NOW OPEN 7 DAYS A WEEK. Monday-Friday 9 to 6 30 PM Tiiurs. to 8 PM Come to Barry's for the best buys irr town, MAY Wo Help You Wltfl tHe Best in Commer dal And Amateur Radlos Jan KB2RV. Toni, Kttty WA20AP. Marfc K2C0N

Ever Say

Presumably you've been horsing around with amateur radio for a while now. Okay, how much have you learned Are you me kind oi ham who made it courtesy of Dick Bash and hasn't made an effort to team more Or have you been working on your theory so you have more than a vague idea oi what's going on in your rice box What could be simpler than to build a battery charger Are you up to it, or is something as simple as that a mystery to you For-sootftl Well, let me whet your imagination by explaining...

Canada

INCORPORATED 23731 Madison St., Torrance. CA 90505 We start our packet blowout with a close took at what packet radio actually is, laying the groundwork for the rest of the magazine. This is the nuts-and-bolts stuff, the ACKs and NACKs and frames that make everything work. Here is where you II find out what a TNC does. (Admit it You've heard about packet and would like to try it, but you're afraid to ask stupid questions. Well, now you can be Joe Packet without being embarrassed ) Introducing...

Expandable Repeater System

THE Hi Pro E ' IS AN EXPANDABLE REPEATER WITH THE FOUOWING FEATURES A BASIC REPEATER WHICH WOULD IN CLUDE A COMPL TE RECEIVER. TRANSMITTER. COR. FRONT PANEL CONTROLS AND INDICATORS. LOCAL SPEAKER AND MIC JACK A NO CAPABLE OF FUTURE EXPANSION ALL HOUSED IN AN EXTREMELY RUGGED. ENCLOSED, 19-INCH RACK MOUNTA0LE CABINET THIS SYSTEM CAN 3E EXPANDED AT TIME OF PURCHASE OR CAN BE AN AFTER-PURCHASE ADD ON THE ADD ONS ARE -HIGHER POWER. 1IW220 VAC POWER SUPPLY...

Unadvertised Specials

Phone for Information or to Order, VISA MC or COD accepted Why risk isappointment Buy time-tested Fox-Tango F fers to be sure -receded m moneys worth luSt one xssue -receded m moneys worth luSt one xssue a ways slop to tead CTM. even though most other magazines t tecerve (and write for) only gel cursory examination * Foreign S3S.OOOand 555,Q(Ha Permanent U.S Subscription) S100.00

AEA

I Advanced Computer Controls 13 154 Advanced Dasign Networks 23 105 Aero Electronics B9 A ma leur Electronic Supply . _ . 56. 57 4 Amidon Associates 103 111 Amp Suppfy Co 73 t5t Ampro Computers 24 16 AstronCorp . .79 53 Barker Williamson 39 41 Barry Electronics ,. . 43 & Bill Ashby 4 Son 103 102 9nncomm Technology ____ _____ 93 California Digital irT , ,. . 64 159 Ceiweve 23 B0 Colorado Commu meat tons Center 107 59 Communications Electronics 33 10 Communications Specials 9 161 Computer...

Motor And Gears

The heart of ttie M9230 Workshop is the B100 Interface Unit which connects td oil types o sensors and cs able to control I ghts motors - ays nd jtbtr -.utrrnal devices Tne MB23Q manual eoniflira suggestions and instructions for many advanced projects sucti as antenna positioning and relay control Available lor ihe lollowmg computers- Commodore 64 ( 129 951, Apple 2E (St > 9.95 , Atari 000 (5139,35 To Cider or tor more inform abort ca toll 'ree 1-800-624-2549 Cashier's cHecfc. Money order...

Profootball Weekend

Tbe Canton ARC will operate special-event station W8AL to celebrate the Pro-Football Halt of Fame's Greatest Weekend on August 2-3. from 1700 to 2200 UTC each day Operating frequencies will be SSB 14,270 and 7.270 CW I 4.060 and 7.060. For a special H.O.F, QSL card, send your card with an SASE to Randy Phelps KD8JN, 1226 Delverne Ave. 5Wh Canton OH 44710 present s 28th annual FM Picnic and Hamfest at Crooked Lake, Angota, Indiana, on August 3. Two miles north of Angoia, (-69 10 Crooked Lake...

Paclen

This is the maximum number ot octets or bytes (characters that you type) that can be squeezed into one packet frame. The AX.25 maximum is 256 bytes. 1 he default value is 128 bytes. Don't get into the lazy habit of typing endless lines of stuff with never a carriage return, depending on your TNC to packetize and send the stuff after the 128th character you type, Even on the C-64's 40-column screen, it's easy to judge when you've typed between a line-and-a-half and two full lines. Type a...

Tone

Other Outstanding Standard Features * New LCD display, easy co read in bright sunlight * Tone encoder (ail PL subaudible tones buiit-jnj * IC-HM14 mit with up down scan and DTMF re approbate sna tubject to change without notice or oni vue, WA 98004 3331 Towerwood Drive. Suite 307. Dallas fKJ523< I COM r thm rignlfluntiy FCC regujarmns ilmiiriig tpgrlo efn spom. 320DA38'

Edited By Perrydonham Kw

OUR SHARPER READERS wilt notice that this issue of 73 is sightly different we've devoted nearly every page to coverage of packet radio, this month s special topic. What a tough decision' On one hand, we had an entire magazine s worth of great packet articles On ihe other, we had all of our regular columns and departments. In the background was the reality that there are only so many pages to put things on. Should we leave out important articles, or leave out the columns We look a look at what...

Glossary

A situation in which both you and the station you are talking to are in synchronization. His computer is talking to your computer, and all you see is error-free text being printed Can be several hops, DigiiaJ repeater Receives data packet over ihe air and decodes the packet to see if retransmission is requested. II so, the digipeater retransmits the data Electromagnetic interference generic term used here to describe interfering signals that are unintentionally passed around your equipment...

Mark Cr

The only repeaters and controllers with REAL SPEECH No other repeaters or controllers match Mark 4 in capability and features. That's why Mark 4 is the performance leader at amateur and commercial repeater sites around the world. Only Mark 4 gives you Message MasterTM real speech voice readout of received signal strength, deviation, and frequency error * 4-channel receiver voting clock time announcements and function control * 7-helical filter receiver * extensive phone patch functions. Unlike...

Pou

To order one of these ad ancec control products, call 408-749-8330 Technical manuals are available lor purchase and the amount paid is applied as a deposit on Hie equipment. For specifications and a copy oi our ACC Notes newsletter just write or send in your GSl card to Not Just For All Computers But For All TNC's Too faster is better So Kantronics has designed a 2400 baud PSK (phase shift keying modem and included it in an all new KPC-2400. In addition, we are making this modem available in...

Kw Coax Switches

Jnitintly select any antenna or rig by turning a knob. Organizes coax cables and eliminates plugging and unplugging. Unused terminals are grounded to protect your equipment for stray RF t static and hgrining, 2 KW PEP, 1 KW CW For 50 to 75onr Negligible loss. SWR. and crosstab gives hrgh performance SO 239s. Convenient desk or waN mounting MFJ-1702, 19.95* 2 positions. Cast aluminum cavity construction gives excellent performance up to 500 MHz with better lhan 60 dB isolation at 450 MHz. Heavy...

Metersall Mode

B23 2W in 30W out (useable in 100 mW-5W) 8108 10W in SOW out , (1W-15W, 2W 30W) RX preamp B1016 10W in 160W ogit (1W 35W. 2W 90W) RX preamp B3016 30W in 3160W out (useable in 15-45W) RX preamp (10W 100W) ' arranty prompt U.S. service and assistance C106 10W in 60W out (1W-1 W, 2W 30W) RX pr C1012 10W in 120W out (2W 45W. 5WS90W) RX preamp C22 2W in 20W out (useable in 200mW-5W)

Rb

Bring things down for safety and convenience. Never cli*n& your ogajn with ttis . vator system Anienftas and J-cralOf fnouni ai HAZEH, complete tysiem trams towor m verticie upright position Safety lock system optfattiQ while raising or lowering New can fall Comp idle kit includes winch, 100 ti of cable, hvtiw rii ano nrfrucljons For R hn 20 and 2b G Tpwan Haz er 2 - He . y dury alun 12sr+ it oa Ha frr 3 - Stanc M aJjm 6 sq. ft -i ad Hai er 4. Heavy g lv steel re sq ti roa alt Thrust bearing...

Hm

Fig. 6i Fw i-jiztf pattern farsingleSidedif*C board. transceiver supply, or a separate supply can be constructed (Fig. 8). The PC board has an extra hole, so a crystal in either an HCIH U or an HC33 U holder can be used, ( here is also an extra row of holes, so the LED displays can be mounted Hat on the board or on right-angle sockets. I constructed a 40-pin right-angle socket from three 16-pin right-angle sockets, using a saw, a file, and some glue. Some may wish to build a larger display with...

Johnson Challengers

Johnson Company has introduced a new series of VHF UHF mobile radios. The Challenger UHF mobile (15 Watts) and VHF mobile (20 Watts) come with eight synthesized channels and programmable priority scan. The Challenger P1usrt UHF mobile (30 Watts) and VHF mobile (40 Watts) feature 19 channels and dual priority scanning Both Challenger models offer multi-tone Call Guards multicode digital Call Guard, a timeout timer, a monitor, and a user-programmable scan list. Diversified Energies. inc...

S

A great .iiii-nimrnn'i iur wMi h ntlernatoly Lie' - - l ri ftud bu lie-1 ' * ) HietLjgfkM jr Th- --'j ti ri O COinpKtff nit EL I teM itkc h il1 Tranimit tflt1 5. J- j -ii Je jrJs A lt icap- r- - . j j r, tr. T- .I. 'ts D iri ip eieclrdt nn o Kil ir i dos cjic rr *t i> rr iwi tti iinn-nna li.LiU I . indsupt ' Irt& lryctii n- (S i Jh lifie i Ni it iu i, a& tn

Model Tuning Range Price

HRA-144 HRA ( *) HRA-220 HRA-432 HRA-( * ) 143-150 MHz 150-174 MHz 213-233 MHz 420-450 MHz 450-470 MHz (Send 2,00 or 4 fRC's for overseas mailing) Order by phone or mail Add 3 S & H per order (Electronic answering service evenings & weekends) Use VfSA, MASTERCARD, Check, or UPS COD.

Lend Me Ur

Your editorial about the proposed Electronic Communications Privacy Act (ECPA) was to the point, as usual, but didn't tell your readers what to do about it Calling your Congressman s office and just teaving your opinion with a receptionist doesn't help. You have to get through to the decision-makers. I called my legislators and asked to speak with the staff member responsible for communications issues These staffers are responsible for reviewing pending legislation and often determine how a...

Other Qualitycables

RGBX95 Shield mini 0) RG213 U Mil Spec 96 Shield RG214 UMil Spec.-Stiver RG142B U Teflon Silver RG217 U 5 8 50 Ohm DbL Shtd. RG223 U Mif Spec. Silver fiOTOH CABLE-BCONO. 2 1SGa.t6-22Ga. 2-16 Ga.r 6-20 Ga. Heavy Duty HARDLINE - 1 2 Smooth Alum. w btack jacket Corrug'd. Copper f Q. Heiia* LDfj 159.GO CONNECTORS - MADE IN U.S.A. TypeN for Betden 9913 Standard Plug forRG8h2l3 Amphenol PL259 PL259 Teflon Silver TypeN tor RG8+213,214 Adapter for RG58 Call or write for complete Prrce List COD add 200...

Retries

This is the number of times your TNC will repeat the same packct to the distant station if your TNC has not received an ACK. Good practice is to set RETRIES for the lowest number that can be effective in any given condition. The default value of 10 is reasonable for general operation. But if you're trying to force lengthy packets through five digipeaters over marginal paths in busy channel hours, RETRIES - 15 (maximum number) will probably do nothing more than antagonize the rest of the troops...

Aes Branch Stores

WICKLIFFE, Ohio 44092 28940 Euclid Avenue Phone (216) 585 7388 Ohio WATS 1 800 362-0290 ORLANDO. Fla. 32803 621 Commonwealth Ave. Phone (305) 894-3233 Fia. WATS 1-300 432 9424 Outside i of r on inn CLEARWATER. Fla. 33575 LAS VEGAS, Nev. 89106 CHICAGO, Illinois 60630 1898 Drew Street Phone (813) 461-4267 No In-State WATS SS 1-800-321-3594 Sv 1-800 327-1917 No Nationwide WATS 1072 N, Rancho Drive ERICKSON COMMUNICATIONS Phone (702) 647-3114 5456 ft, Milwaukee Avenue No In-State WATS Phone (312)...

Amateur Electronic Supply

Fond du Lac Avenue Milwaukee, Wl 53216 Phone (414) 442-42( -AES BRANCH STORES - Associate Sto WICKLIFFE. Ohio 44092 28940 Euclid Avenue Phone(216) 585-7388 Ohio WATS 1 800-362-0290 ORLANDO, Fla. 32803 621 Commonwealth Ave. Phone(305)894-3238 Fla. WATS 1-800-432-9424 CLEARWATER. Fid. 33575 LAS VEGAS. Nev. 89106 CHICAGO, Illinois 60630 1898 Dfew Street Phone (813) 461-4267 No In-State WATS 1072 M Rancho Drive Phone(702)647 3114 Ko In-State WATS Outside i oArt c a too IRICKSON...

Am

Most BBS systems are up 24 hours a day. This graph shows the average number of connects by rime of day at WBlMNFin March of 1986. The average connect time was 7. 7 to make your best effort to deliver it. You aren't the U.S. Postal Service, but you shouldn't cnticc users to leave mail on your system and then not make sure that it gets delivered. Hhe BBS has to be available when people want to use it. In my experience, this means 24 hours a day, every day. If you decide to put your BE1S...

Antenna Current

Currant Probe lets you monitor RF antenna currents no connections needed Determine current distribution . RF radiation pattern and polarization ot antennas, transmission lines, ground leaos building wiring, guy wires and1 encfosures * Indicate iranjmlitlon line radiation due to hfgh SWR. poor shielding or antenna unbarance * Dotect re-radlatlon from rain gutters and guy wires that can distort antenna field patterns * Detect RF radiation from ground leads, power cords or building winng that can...

Bdjr

Programmable, multi-fur iction scanning * High quality external speaker supplied Audible beeper confirms operation TU-3 orTU-3A two frequency tone encoder MC-55 (8-pin) mobile microphone Convenient control keys for frequency UP DOWN, MHz shift, VFO A B, and MR (memory recall or change memory channel More information on theTM-20lB 4Q1B is available from authorized dealers. W-4Q1B s to Ifrt T ' 2018. but CO e S 440 J 50 A 'Hz md is 25 ivrtfis Specifications and prrcei subject to charge wjtficuf...

Closeout

Features 11 bands * AM, FM broadcast + 13,16,19. 22. 25, 31 41, and 49M SW tend No BFO. Band spread tuning. meter. 3 sp dker, fecorcJ- phone jacks, rthip Ferrule aruennas 7 mJ h * 1 d, requires4 AA' cells. Soft case and earphone, shown with optional HS-7 micro-headohones S19).T, CJoseout 6 For a Limited time, purchase the TS-430S at our normal Low Sale Price and receive your choice of the optional MC-42S Up Down hand Microphone or FM-43CT FM Unit at , NO EXTRA CHARGE. The FM-430 provides HF FM...

Cpo

FtuFTiCvna 1 Vdc 1 wailoul ) RHZgitodJorCPO Alarm A 1- OSd l i Coirif > der ofl a S'PQlt PC Bgl tioa l 400' fljr 3uu Hi ad U tabMf rang vis 30 hjrn pli ( alu h r+h i-laln.ii & S7 IC LlBufUt for l'i flh- onE- liefst dvttclKin F SX i-ic. Can 4Jh b Li d slt lt Hj E r. J'-r RL S O S lo VOUS A fr in1er-il ng * irnaH T'ike fJ'r- 5 Ui- u rdi -Ilr-.Hj ttot'-ip'ts Wim r.j hgttl Tn. i.jtiilef (h. M i .i r. j ihe bflgmor M- Itgru inth r1h> mike. u lu (Tiiki ami uo .t I-' V rypf hM-y t as dded-...

Dealer Directory

Mirage, KLM Larvcn, AiUun, B& W 1 ivc r4000 dcaron k prafucta for the hnhhy t. Also CB and bottom* r*diov Semnp you from a 6000 tq ft wore Foniaiu Ebctro Sierra An,, KiHiiaiM CA 335. K Bjv Am s tiewaa ami tr tir raiii' itorr Ne A u ed kmuTeur radio A bi-rvicr We feaiiiit- Kenivood, ICOM, Aiden. Yucui, Ten Tec, Sam & niany mm*. Shaver Km-dloT Inc I77SA S. Winchester Campi ll CA 9500 . MQ-6MS. Tbi rtluMe harn ame trving SE. Full line onCOM& KtTwood Drtkf D I.BAW...

Call Toll Free

Phone Hrs 7 00 am to 5 30 p.m. Pacilic Time. California. Arizona and Georgia custom& rs call or visil nearest store. California. Arizona and Georgia residents please add safes tax. Prices, specilications. descriptions subject lo change without notice Al Ugr K6VRA San 3sego fwy at Victory Blvd STORE HOURS 10 AM-5 30 PM CLOSED SUNDAYS THINGS TO LOOK FOR (AND LOOK OUT FOR) IN A PHONE PATCH A patch should work with any radio. AM, FMT ACSB* relay switched or...

DWAIT

This is the length of time that your TNC will wait after last hearing data on the channel before starting the TXDELAY timer to key your transmitter's PTT line, unless the TNC is waiting to transmit digipeated packets. DWAIT is particularly important when working with digipeaters on a busy channel. Remember that DWAIT is affected by your TXDELAY setting, and for best results should be set at some value established in agreement with other local packet operators. DWAIT's main function is to help...

Camp Hill Pa

The Central Pennsylvania Repeater Association will hold its annua Electronic Exhibit Ham Computerfest on August 24 at the Penn Harris inn and Convention Center, Routes 11 and 15, Camp Hilt, Pennsylvania. Gates open at 8 a.m. 4 admission, XYLs and children under 12 free Exams be gin at 9 a.iTL Talk-in on 145.47 (WA3KXG) and 146 52, For hotef reservations, call Penn Harris Inn & Convention Center at (717 -763-7117 mention CPRA for reduced rates. For more information or reservations, contact...

Ct Un

Optional Accessories - TU-7 36-tone CTCSS encoder PG-3A DC line noise filter MB-10 extra mobile bracket CD-10 call sign display PS-430 DC power supply for TM-2550A 2530A 3530A PS-5Q DC power supply for TM-2570A MC-S0A MC-80 MC-65 desk roics MC-48 extra DTMF mic, with UP DWN switch MC-55 (8-pin) mobile mic, with time-out timer SP-40 compact mobile speaker SP-50 mobile speaker SW-200A SW-2008 SWR power meters SW-1Q0A SWM00B compact SWR power meters SWT-1 2m antenna turner Complete service manuals...

Establish A Ham Testing Center In Your Area

As of 1981, all ham railm licen t is handled by tlu-ama tour radio community iiself, Teams tJbrev Extra Class volunteer examiners VE s can now conduit a I ham liccnse upgrade examinations Administermg Technician through Extra Gass examinations is no hatider than administ r Novice rsxa mi nations - which VE s have done for tetada Wt 1 er fasttsi VE accreditalion complete instructions immedi etesting v. th T stini fees (expense reimbursement) shared with Ihe VE team. Send an SAM today for a VE...

Frack

This value is the number of seconds that your TNC will wait for an acknowledgement (ACK) before sending a retry packet, If you have a really good path to the other station and the packets are very solid, you can leave this value at the default selling of 3 seconds. Reducing FRACK doesn 't really increase the speed at which packets are transferred. But if the channel is busy and there are many stations onf especially if there's a PBBS (public bulletin-board system) or dedicated digi-peater...

Eof

Where ss is the starting hour for forwarding. ee is the ending hour for forwarding, bbs is the call of the BBS to which you wish to forward mail, digit and digi2 (and any other digipeaters) are the digipeatcrs through which you have to digipeat to get to the BBS, and station 1 Station > etc. arc the stations whose mail should be forwarded to the BBS. Stations that originate messages specify that mail should be forwarded to a distant BBS by following the call of the addressee with an sign and...

Form

To schedule your KPC-2400 exchange, please fill out the information below and mail this form, inc-jcting 149.00payment (shipping include 1 to Kantronics, 1202 E. 23rd Street. Lawrence, KS 66046, You will be notified by mail of your authorization number, and scheduled exchange date DO NOT RETURN YOUR UNIT WITH THIS FORM. This form Is be ing -jsed to SCHEDUI E returns When it ts iimr to return your unit, please DO NOT SEND BAC< ANv CONNECTORS CABLES OB POWER SUPPLIES Send baO onlv the unit...

Lus

Touchione dau display, transistor tutor, line conditioner COM mods, extra V1C-20 memory, shoestring RTTY OSCAR upink amp. HF helicates, 6-meler CB Volunteer exams, lalkinp repealer controller Dayton Hamvcntion special kb mod's Journal, the ama ing Hat-Tenna Dayton m pictures, world's largest array, add-on digital display N85*s Holiest Antennas Nine skyw ires-October 1985 25th Anniversary Special Inspecting floppy disks, WWII spy radio, 12 96-M Hz d o wncon ve rte r Holiday Shopping Guide, short...

Indonesia

(73 international welcomes Indonesia. and its representative. YB0BZZ, QSL Manager and IARU Region III Liaison Officer, who has provided most of the following informationi. Much of this came from a paper he and Ben S. Samsu YB0EBS prepared for last November's IARU Region III meeting in New Zealand.) Unlike many neighboring countries, Indonesia has not abolished or curbed all ham activity. All Indonesian hams must by law be members of ORAR (Organisas Amatir Radio Indonesia), and there are no...

Indoor Tuned Active

Or gxtftrtdt receotlon of outtide long wires Unique tuned Active Antenna minimizes intermode, improves seiei 1 vltyr reduces noise outside tuned band, even' functions as preselector with external antennj Covers 0.3-30 MHz.Tele scoping ant& nid.Tune Band,ijdinHOn-uff bypass controls.6*2x6 in Uses 9V Dattery> IBVOCor 110 VAC wttn aoaoter, MFJ-1312, 9.95 MFJ-1020A S79.95 POLICE FIRE WEATHER 2 M HANDHELD CONVERTER Turn your lyntheilred scanning S39.95 2 meter handheld into a hot Police Fire...

ICOM

Other Accessories conr Regular SALE GM World clock (CLOSEOUT) * 99.95 69 GC-5 World clock 79.95 HF linear amplifier Regular SALE IC 2KL 160 15m solid state amp w ps 179b 00 138 6-meter VHf Portable Regular SALE IC-505 3 iOiV 6m 3SB CW portable 469.00 419 BP 10 Internal Nicad batter pack 79.50 BP-15 AC charger 12,50 EX 248 FM unit 49.50 LC-10 Leather case 34 95 VHF UHf fuse multi-modes Regular SALE 1C-551D SOW 6 meter SSB CW 73500 S49 EX-106 FM option 125 00 112 0C-IOA Memory back up .50 IC-271A...

Tur

The quality QSLs you've been looking for are here at an incredibly low price These cards are printed in two colors (blue globe or satellite, black type) on heavy, glossy stock. Now you can afford to QSL 100 Order now before we regain our senses In our continuing effort to present the best in amateur radio features and columns, we've decided to go directly to the source you, the reader. Below, the articles and columns in this issue are assigned numbers. These numbers correspond to those on the...

Issue

Hiteyw heard uhn i packet radio PWrabJy you have, but ) on are a hit ftnzy on the subject. Don 't farther Junking in the other ham r > Tor heJp .at best tou'H find a rehash uf 501114 See Packet Run artkfc. Tht> mj& uint is a C uenpfete coarse 00 a single subject. We * re done e 1 eryt hing pussib le 1 o cram t try available scrap or in formal mhi on (iac*vH radio into 112 pi* Sttmr munthlv columns were omitted, others (rinimrd (they'll alJ be back in September). The result is a series of...

KPC

Anv unit returned to the factory without paymeu. authoriraiion numbet tadulinq will not receive priority jjUacument Anv unit returned to the factory without paymeu. authoriraiion numbet tadulinq will not receive priority jjUacument Time) Monday-Friday, and we'll take it from there. To guarantee a quick turn-around time, Kantronics is scheduling ALL exchanges, and assigning authorization numbers. Any unit returned to the factory without prior scheduling and authorization number will not be given...

Kit Wired

(Also available for commercial bands) SENSmVfTY SECONDTO NONE 0.15 uV(VHF). 0.2 uVfUHF)TYP, SELECTIVITY THAT CAN T BE BEAT BOTH 8 POLE XTAL FiLTER & CERAMIC FILTER FOR > 100dB AT 12KHZ HELICAL RESONATOR FRONT ENDS TO FIGHT DESENSE & INTERMOD, OTHER GREAT RECEIVER FEATURES FLUTTER-PROOF SQUELCH. AFC r0 COMPENSATE FOR OFRFREQ TRANSMITTERS. SEPARATE LOCAL SPEAKER AMPUFf ER & CONTROL CLEAN, EASYTUNE TRANSMITTER UP TO20 WATTS OUT UPTO SOW WfTH OPTIONAL PA),

Mb Workshop

MB230 is es gred ior use with your home or personal computer I ts a complete Electronic instrument and Electro-Mechanical Workshop which contains Interface Unit. D C Motors. Gears. Sensors Construction Components, Disk Based Software and instructions for 50 sample projects Digilal Storage OscHlosCOpe Ot iiai Voltmeter D ital Speech i Sound A. D-D A Conversion DC Motor Comrol (Var Speed) Infrared Control Motors, Gears, Generators Motorized Mechanical Robotics Cars, Cranes, Toys, Elc. HESS SSBi

MFJ

Price tinned 50 to 169,95 Get a fun feature Super Keyboard ttia sends CW RTTY ASCII tor the price of a good memory keyer You get the convenience of & dedicated keyboard no program to load no intarface to connect jus* turn rt on ahd it's ready to use. Thli 5 mode Super Keyboard Eels you send CW. Baudot. ASCII, use it as a memory keyer and for Marse Code practice. You get text buffer, programmable and automatic message memories, error deletion, Duffer preload, buffer hold TRIPLE OUTPUT LAB...

Ok Corral

The Old Pueblo HC will operate its 5th annual speciaf-event station W7GV from 1300 UTC August 30 to 2200 UTC September 1, from the famous OK Corral at Tombstone, Arizona, site of the famous shootout between the Earps and Clantons in 1881. in cetebratrion of the Rendezvous of the Gunfighters. Frequencies SSB 21 380, 14.280, 7 280, and 3.980 CW 14,060. 7 130. and 3.730, Send a QSL with an 8-1 2 x 11 envelope and 40 cents postage to W7GV, PO Box 42601, Tucson AZ 85733.

Mobile Antenna Matcher

Lower your SWR and Get more power into your mobile whip for solid signals and more QSOs. Your solid state rig outs (iut more power ana generates less heal For 10-50 meter whips. Easy plug-in installation. Complete instructions Tits anywhere, 2V x2Vim ORDER ANY PRODUCT FHOM MFJ AND TRY IT-NO OBLIGATION IF NOT SATISFIED RETURN WITHIN 30 DAYS FOR PROMPT REFUND < less shipping. One year unconditional guarantee * Add 15 00 each shipping handling Calf or write for free catalog over 100 products. TO...

New Ramsey Vom Multitester

RAMSEY D-4100 COMPACT DIGITAL I ESB MULT I TESTER Compact sized reliability and accuracy *'iisLC. djgita) mult uester easlfy fits m Our poi * -9t you car* faVe > T anywfn re it atLjres I'aU overload jjrofect'dn 3 s liQii LCD reaOOot receS'i'-cJ mpul iar 5 * .itety probes diode CtieCk function SOQO hours battery life Chech hnnsistors diodes and LED a1 rn this prcfessionai quai i, meter Ottief fealui+ s .nclude der ibt sea e * 20K voJt r-fenng s. stem * 3 rnif rored scaJe pofanty switch 20...

Mullica Hillnj

The Gloucester County ARC will celebrate its 27th year at its 8th annual hamfest on August 24 from 8 a.m. (7 a m. setup) to 4 p.m. at the Gloucester County 4-H Fairgrounds, Rte. 77, Mullica Hill, New Jersey Tickets are 3.50 in advance, 4 at the gate. Sellers additional S4 per space or 4.50 with ac power, indoor tailgating. Exams at 9 30 and 1 30 at Stephen's Hall. Talk-in on 14778 .18 and 146.52, For information and advance rickets, write to GCARCt PO Box 370t Pitman NJ 080711 or call John K2FJ...

Qsl Of The Month

To enter your QSL, mail it in an envelope to 73, WGE Center, 70 Rte. 202 Nt, Peterborough NH 03456. Attn QSL of the Month. Winners receive a one-year subscription (or extension to 73 Enlnes not in envelopes cannot be accepted. I give you much more than just the lowest price When you get that exciting new piece of equipment from me, you know you are going to be completely happy.,. I see to it, personally I afso give you earliest delivery, greatest trade-in allowances, my friendly assistance in...

Partial List Of

OPERATES SIMPLEX, THROUGH REPEATERS, OR DUPLEX ON REPEATERS * VOX BASED TOLL RESTRICT (Digit counting and programmable first digit iockout) * SECRET CODE DISABLES TOLL RESTRICT FOR ONE TOLL CALL Automatic rearm * AUTOMATIC BUSY SIGNAL DISCONNECT CONTROL INTERRUPT TIMER (Maintains positive mobile control) CW ID When you connect again on disconnect. Free ID chip. * SELECTABLE TONE OR PULSE DIALING MOV LIGHTNING PROTECTORS * THREE DIGIT ACCESS CODE le g. *91) * RINGOUT (Reverse patch) Ringout...

Reciprocal Agreements

There now are reciprocal operating agreements between Luxembourg, Monaco, West Germany, and France licenses now are permanent Maybe this is a first step toward a full European license Others should apply to DTRE CGRP, Service Amateur, BP 75, 94002 Creteil Cedex, France. Your call in France will be, for example, F W, for at least three months (and for a year, eventually). The former F0 calts do not exist anymore. Countries now having reciprocal agreements with France are Australia, Austria,...

Pr Counter Preamp

T* pr-2 il ideai o* rteesuric j .gr.afs Irom O 1 Dw MiH litf i.n r'SC OT'dsct 'i yejii lot ihtiii-Hj fif * idi , f lSiv r 'T .' c-reimp S A A Q5 wifBd ineriJ irs AC aii pl*r wail ChaiKleritlic t a m ico siror 5 WpeoK audio Output, funs Of) 3 icj irstfi 3 i t Uni d. .l IrgijLfHicJ In p HD-J i3i- .1 NULllte of (ir iE jr, 1 o ar i i'ui t oentinliLtn sh.-1 rner iC .ir,d lire 'i. IJH T - fang* 'o' *> .-si i'TOducFiSi i OUDe.Li 5n.iTlenr> L and flMention QMIlng sirfln l Ke SOund ' in Si -1 I v...

Receive Oscar Telemetry

Decodes satellite's housekeeping status reports, environmental data collected and plain text bulletins audio output of SSB receiver or cassette player. OUTPUT RS232 compatible serial bit stream at 1200 baud RADIOKIT J 411 S Greenville, NH 03043 RADIOKIT J 411 S Greenville, NH 03043

Sol Notch

1mHt f.lock proc notch SELECTIVITY m AT-440 internal auto* antenna tuner (80 m 10 m) AT-250 external auto tuner n60 m - 1 m) AT-130 compact mobile antenna tuner (160 m 10 m) IF-232C IC-10 level translator and modem IC kit PS-50 heavy duty power supply PS-430 PS-30 DC power supply SP-430 external speaker *MB-430 mobile mounting bucket YK-88C 88CN 500 Hz 270 Hz CW filters YK-88S-86SN 2.4 kHz 1.8 kHz SSB filters MC-GQA 80 85 desk microphones * MC-55 (8P) mobile microphone HS-4 5 6 7 headphones...

Sale

349 379 369 399 Hand-held Tranm eivers Deluxe models Regular SALE IC-02AT for 2m 369 00 299 1C-04AT lor 440 MHz 399 00 339 IC-2AT flithTTP 269 50 209 IC 3AT 220 MHz, TIP 299 95 249 Accessories for Deluxe models Regular BP-7 425mah 13.2V Nicad Pak use BC-35 67 50 BP-8 800mah B.4V Nicad Pak - use BC-35 , 62.50 BC-35 Drop in des> charger tor all batter ps 74.95 BC-60 t-position gangcbafger, alt ban SALE 349 95 8C-16U Wall charger for BP7 BP3 19 95 LC-1I Vinyi LC44 Vinyl case 'or )h using BP 7 8...

Txdelay

This is the length of time (the units vary on different TNCs) that your TNC will wait between the moment when it keys PTT to put your rig on the air, and when the TNC actually unlatches and sends the packet data out to the rig. During the TXDELAY period, the TNC sends a stream of contiguous FLAG fields (01111110K until it begins the actual frame contents. Some of you may think of TXDELAY only in regard to the lime it takes for your transmitter to switch on and develop power. TXDELAY must also...

Standard Features

Autopatch Fieverse Patch, w Q & 1 inhibit Oral Putee Convener Autoo-aler Phone line & over the airT1 command modes. Virtually all functions may tie lurried ontoff remotely. Touch Tone Control of Timeout', 'Hang Time'. Patch Timeout, TX InhibitfReset. Patch & Reverse Patch fnhibit Rasei, P L. ON OFF (wtopliortal PI bGartf), etc. Up to 6 Auxiliary Functions* More with TTC30O. Full 16 Digit Decoding with Crystaf Controlled Decoder JC Touch Tone Mute Kerchunk Killer Unique Courtesy Tones...

Survival Training For Mountaintop Digipeaters

11 was mid-afternoon, laic by mountaintop standards. From the ground, the clouds seemed motionless. The air was moist, still, and quiet. Up on the tower it was another story. Greg WB6ASR, leaning unsupported Photo A. Weil-dressed mountaintop equipment racks now sport computer terminals, This digipeater require s 5-1 4 of this equipment hay, 50 feet above the ground, was constructing an antenna on the tower from parts pulled from his parka pockcts, Fifty-mile-per-hour gusts squeezed the moisture...

Tuc

J AS-J digital ground station, 60 73 Amateur Radio * August, 1986 Photo E. RUDAK engineering prototype 02. Photo E. RUDAK engineering prototype 02. new 'W launcher. (NASDA has never engaged in a multi-payload launch thust the JAS-I project will offer NASDA an excellent opportunity by providing them with an active payload having its own telemetry beacon and transponder for ranging.) The spacecraft takes the form of a 26-facet polyhedron, which measures 400 mm x 400 mm x 470 mm and weighs...

WAMT

The AMT Packet Radio Network on 145.01 MHz as of Ma 986 (diagram bv WB6ASR), Fig. 2(b). Pass-cavity response curve. Fig. 2 fa). Notch-cavity response curve. packet-radio lingua franca, AX.25, will allow. Eight digipeaters are all you can request, and there were too many miles between major population centers for this number to be sufficient. The design goal was to have Portland. Oregon, conneci to Los Fig. 2(b). Pass-cavity response curve. Angeles with those eight hops Greater distances...

Wrafuf

If you are interested in digits in space. 19K6 should be a banner year. If you are interested in passing data through the network, you should be aware that in the future, much of the DX traffic will pass through the satellites discussed here For the most in-depth coverage of the amateur satellite program, join one of the AM SAT organizations worldwide and get their journals, Come on up B 1. Martin R Dawdoff K2UBC, The Satellite Experimenters Handbook, ARRL, 1984. 2. H. Price NK6K and J, Ward...

Write Me

At one of the world's largest Ham Supply Centers' under one second without planning it ahead Your receiver can tune for the ID bleeps and show you the call on its screen. You can easily program it to call only specific prefixes. Hey, here's your chance to be the first ham to work one hundred countries in alphabetical order It'll make checking for DXpeditions a snap. It might even make DXpeditions simple since the operator would no longer have to actually be there You coufd just send the rig in...

Ampro Little Board

Evelyn Ave. Mountain View CA 94041 Ampro Little Board 249 There is a phenomenon in a rapidly growing and changing technology like personal computers that is usually called the price knee or crossover point. This ts a point in time in which the price for an older generation of machines is dropping quickly, and the cost of the new generation, initially fairly high, is also starting to fall. At some point, the cost-effectiveness ratio crosses over, and the new...

Tnc Parameters

The parameters used on the TNC are critical to how well the BBS operates. Some parameters like ABAUO and PARITY, are determined by the BBS hardware and software Others, like TXDELAY, are a function of the radios. Of interest here are the parameters that control the way the TNC feeds the packets into the network DWAIT, FRACK, RETRY, PACLEN, and MAXFRAME. These should be fine-tuned to Lhe characteristics of the network. These are TNC-1 parameters, NC-2 users adjust accordingly. DWAiTconlrols the...

Fad

Di DUPLEX BiT'fiEGEN DiGtTAL REP ATE ft di DUPLEX BiT'fiEGEN DiGtTAL REP ATE ft Fig. I. Packei repeater configurations. iy is noi interested in such activity Nothing is more ccrtain to bring the villagers up the winding path to your castie's digital laboratory with torches and flaming pitch than pumping braaaaap through the local voice repeater dunng the nightly bull session. By user support community 1 mean those individuals who make up the repeater group and support the repeater with time,...

Radio Amateur

925 Sherwood Dr,, Box 24 7 Lake Bluff, I L 60044, USA same a* the FM voice repealers wc are used to. In fact, any packet station can be a digipeater. Remember thai each packet station listens to every transmission on the frequency to see if that transmission is addressed lo it. it also looks at each transmission to see if it is supposed to be repeated. The addressing information specifies which stations are lo repeat the information and in what order they are to repeat it. Thus a cham of...

Custom Knobs

Custom-printed Knobs and dials are available from Selco Products. Virtually any logo, numeral symbol, or line can be printed with a character height of as little as 1mm. A wide variety of shapes can be printed on, and it is possible to print lines around a corner. Knobs and dials come in black, gray, white, and clear, and can be overprinted in a variety of colors. For more details and samples, contact Selco Products Co 7580 Stage Road+ Buena Park CA 90621. Reader Service number 153,

Build The

A complete kit of parts, including a high-quality double-sided printed circuit board, is available from Valtey Electronics. The kit version is slightly different from the unit presented in this article a larger EPROM is used which covers two frequency pairs, and several cosmetic changes have been made to fhe PCB Order Number Description Price 88601 Digital Tuning Indicator kit 79.95 88602 Kit without enclosure 72.95 88603 Semi-kit PCB and EPROMS only 22.95 All prices include shipping and...

Type Orbits

Can vou tell that this was sen as TYPE OR BITS 134 No, and neither can the BBS system, which proceeds to send you 15 minutes of last week's orbital elements. The packet system 20 kHz up the band took three tries to get the line through, but now it's reading this week's elements. Score one for packei. W e're off the pairi again. The question was 14 ts HF packet really usable It comes down to two things hardware and user training. The RTTY community has spent many years perfecting terminal units...

Electronics

Elh 730 Manual Espa

ARCADIA CA 91006 (818) 447-4565 TOM W6QRG MARYANN WB6YSS_____Compuserve 72405,1207 10 pin VMS color camera and RCA phono jack video inputs, Crystal locked 4,5 mHz sound subcarrler. PTL (Push To Look) T R switching, Sensitive UHF GaAsfet tuneable downconverter. Two frequency 1 watt pep xmtr, 1 crystal included. Xmit video monitor outputs to camera and phono jack. Small 7 x 7 x 2.5' for portable, mobile, or base. Draws only 500 ma fexc. camera) ar 13.0 vdc....

Berryville Va

The Shenandoah Valley ARC will sponsor its 36th annual Winchester Hamfest on August 3, from 7 a.m. to 3 p.m., at the Clarke County Ruritan Fairgrounds on Route 7, two miles west of Berryvifle, Virginia, Admission is 4, women and children under 12 are free. Tailgaters and limited tables 5. Talk-in on 146.22 .S2 and 146,52 Simplex. For further information, call Rob Kinsley NT4S at (703J-869-5113. or write SVARC at PO Box 139, Winchester VA 22601 Exams on August 2 at 9 a m call Wart Quitter NC4B...

Wa

direct SWR reading MP-1 (HF) 1.8-30 MHz D1010 10W in 100W out (1W-25W, 2W-50W) Available at local dealers throughout the world. 16890 Church St, Morgan Hill, CA 95037, (408) 779-7363 Late last year AEA broke new ground by introducing the first five mode amateur radio computer interface with Morse, Baudot, ASCII, AMTOR, and Packet. the PK-64. Now AEA has another breakthrough .the PK-232. The PK-232 makes any RS-232 compatible computer or terminal the complete Amateur digital operating position....

International Radio

747 SW South MacodoBlvd. ortSi, Lucie FL 33452 3 Amateur Radio August, 1986 93 Clark WB9EAP, 2202 South Boots Street. Marion iN 46953. The St. Cloud ARC will hold a hamfest August 10 at Lake George in St, Cloud, Minnesota, near downtown, off MN 23 and U.S. 52. S3 ticket donation. Talkin on .34 ,94 primary, .615 .015 secondary. For more information, contact SCARC, Box 141, St. Cloud MN 56302. The Mid-Atlantic ARC will hold its annual hamfest on August 10, a a.m. to 3 p.m., at the Bucks County...

New Mercer

Mercer Electronics, a division of Simpson, has introduced the modei 9370 autoranging digital multimeter, The 9370 measures up to 1,000 V dc in 5 ranges, up to 750 V ac in 4 ranges, up to 10 Amps in 2 ranges, and up to 2 megohms, A memory mode stores a zero offset of 99 counts. Also included -s an audible continuity tester. The model 9730 retails for 59, For more information on Ihe entire line of Mercer test equipment, contact Mercer Electronics. 859 Dundee AveElgin IL 60120 (3i2 -697 2265,...

Austria

Osterreichischer Versuchssenderver and Theresiengasso 11 A-1180 Vienna Austria The OA .S.V. (an IARU member) announces its Austrian prefix contest (AOEC 160m), which will lake place the third weekend in every November, 1800 UTC Saturday to 0700 UTC Sunday, on 1810-1950 kHz. (Participants must be careful to observe their national reguiations for 160m ) CW only, licensed radio amateurs worldwide fin Austria, OVSV-mernbers only) and SWLs are eligible. Contest call CQ TEST CQ OE exchange RST and...

Ham Trader Yellow

Buy, swap, sell ham-radio gear Published twice a month, Ads quickly circulate no long wait for results. SASE for sample copy. 10 for one year 24 issues . PO Box 2057, Glen Ellyn IL 60136-2057. BNB412 QSL CARDS Look good with top quality printing. Choose standard designs or fully customized cards. Better cards mean more returns to you. Free brochure, samples-Stamps appreciated Chester f you want a 2-meter tion. The I02A is aiso avail- handheld with exceptional able and...

L

Harold Price NK6K Tak Okamoto M2PKI Hanspeter Kuhten DKIYQ Peter Guelzow DB2DS Donald AW DJSHC KE6MN Satellites are going digital in a big way five international experts combine to define our place in space. Microprocessors and digital communications have played a gt an in ili o the recenl amateur spacecraft They have usually been Photo A. Dr. Martin Sweeting G3YJO, UoSAT Project Director, listens to the Uo-9 spacecraft with a hand-held 2-meter FM radio. The antenna array in the background is...

Controller Wd1770 Boost

The Original Ampro Lrttle Board at a Glance 7 3 4 x 5-3 4 x 3 4 One e-bit 2732 EPROM for initialization Two RS-232 serial pons, one 75-9600 baud, one 75-38,400 baud, plus one Centronics parallel printer port. One serial port is used to communicate with any Western Digital WD-1770 disk-controller chfp can drive one to four 5-1 4 soft-sector disk drives, in any combination of 46 tracks per inch tpi and 96 tpi, single- or double-sided 5Vdc 750 mA, 12 Vdc 50 mA Ttie - J 2 V dc tor the RS-232 serial...

Lb

Dept. 011-402 Benton Harbor Ml 49022 Kail amp Associates 2440 E. Tudor Road Suite 138 Kan i ronics 1202 E. 23rd Street Lawrence K amp 66046 16713 Mooney Drive Gaithersburg MD 20879 Micro Supply Organization 4909 Stockdale Hwy 180 Baterafieto CA 93309 QSKY Pub shing PO Bo if 3042 Springfield fL 62708 Watt Engineering PO Box 1848 GoletaCA 93116 PK-64 Pakratl TNC for the C-64 128 219.95 HFM-64 Optional HF modem for the PK-64 119,95 PK-64 HFM-64 Package deal 309.95 PK-80 General-purpose TNG-2...

Western Electronics

BOX 982 MARYSVtUE, WA 90270 ALSO DIPOLE5 A Lr MTEiKSPACE ANTENNAS or W tHH pnttntpt n iTXl-o- f c 9f m_lt gt b nd BIG rtpvli 1 ImIwIk bandit ithme km SWH'Coii Ho pfivtt Compact - FJJU A amp S amp L R ta iur ipti-lrafl Cfif fitr. ip i. 1 E , I g 1F.1TF TftTf 10 w mqulb camfhh iniimce fli- tdu' mrswul cahi kchm band sloped - ooiq 30 a J lAQ SO 7 - A0-I0 W -THAV UH'OIE - 160 00. 40M - J - 00, a HAND SPAC E SftVt FI DLP L t6Q 1 hm IQ M ______ -lullOS wirln .irH- IHN...