Computers Incorporated

Mountain Vrcw, CA94 4 - , 415)96S 0230 * TELEX 4940302 Low pass T.V.L filters from Barker & Williamson Pow& f CutOfl Manjmum Minimum Frequency Model Watts) Fr qu ncy Att& nuotion AThHiuatioo Can e Pow& f CutOfl Manjmum Minimum Frequency Model Watts) Fr qu ncy Att& nuotion AThHiuatioo Can e

Accessories

Run up to 1200 baud digital or packet radio signals through any FM transmitter. * COR-2 KfT With audio mixer local speaker amplifier tad & time-out rimers * COR-3 KIT with ' courtesy1 beep. * AUTOPATCH KITS. Provide repeater auto patch, reverse patch, phone line remote control of repeater, secondary control * CWID KITS * SIMPLEX AUTOPATCH R744 R220 FM RCVRS for 2M or 220 MHz O.lSuV sens 8 pole xtai filter & ceramic filter in i f r helicai resonator front end...

C

Schematic oi the hum eliminator Fig 2. Schematic oi the hum eliminator The success of this circuit relies on the difference in time constants in the power supply and the hum-eliminator base circuit l he receiver power supply has a dynamic impedance of about 400 Ohms, The impedance seen at the base of the transistor is roughh R1 in parallel with R2 li we make the parallel combination of R1 and R2 about 10,000 Ohms, the base filter (apacitor is 25 times more effective than the same...

An Improved Omni From Grove

The Omni, developed by Sob Grove and now improved, is a non-directional vertical dipole with continuous 30-960 MHz coverage, A single 66-inch element works on the harmonic principle to provide in- and out-of-band scanner reception throughout the VHF UHF spectrum. Low band, high band, UHF, military and civilian aircraft bands, and cellular radio telephone, all can be received on this one antenna. All mounting hardware is n- eluded. Requires a TV type-F connector on your coax. For further...

Dealers

Wait company name and mesAJgc can contain up to 15 words for as Utile as 1150 y carl y ( prepaidK or 515 pc r month (prepaid quarter j > 1 No mention of mail -order btuiocss or area code penniucd Directory text ami payxticm must reach us GO days in advance of publics Lion For exam pie. advertising for the June 86 issue must be inourhtnds by April Iht Mail 10 73 Magazine, WGE Center. Peterborough, NH 03458. ATTN Hope Currier .

CQ Ma Bell

Passing a 12-wpm Morse test will upgrade Certificate A to Certificate B, which adds all modes on frequencies below 30 MHz A written examination on advanced electronic theory is required for Certificate C, which allows the hoider to use homebrew equipment, transmit with up to 1,000 Watts output, and become a license holder for repeater and remote stations, WE MISSED THE BOAT on the no-code li* cense, but New England Telephone was not so myopic If you live in the...

Dealer Directory

Cainplrie linnJi omr DeriTf ir irr lr r mirale. Cuhtc, I iiimr. over 40 electronic product* im h bbyid ttctmkOT penmcjitei 4Uff l'li raJiu. iin& 4nubtlt> ftnihni kleefmnic*. ttlinim IctnUiM i 4 92J3S, KU-TTlt. Rosa WBTBYZha* Hie Janeii slQck f imAitur mu in r ic Ittlcrmtiiimaln Wmi .imJ the hrsi pdeft full me Tor ja your hun need* Koss HistrlhnUnn, TN So. SlMlt* Pmlun IOI3M AUJKJO. Tij-- uiWt K CS iHLBlR tkU> vott m rir ti ei A sc ** f< ICOM. Ajdffl In, Ten- F*. Sjniec A motf * R*d ....

Hb Dxpedtion May

The Wiesbaden Amateur Radio Club, WiesARC. an ARRL affiliated club from West Germany, wit be found on the air again from Liechtenstein during the clubs eleventh annual expedition from May 22 through June 2,1986. The club will be operating the HB0 DA1WA callsign on all bands using both CW and SSB. Each contact with DA1WA counts heavity toward the club's Urkunde (award) Certificate. Urkunde informa-iion may be obtained from the GSL managers US and Canadian statins QSL (with 22-cent SASE) via...

Info

Can 601-323-5869 in Miss, and outside continental USA Telex 53-4590 MFJ STKV Technical Forums Personal Computer, Packet Radio, ARRL, AMSAT, Antennas. RTTY, SSTV ATV FCC, Electrical Safety and many, many others. New Products See, touch and feel the latest in high-tech equipment. 1 Giant Flea Market Starting at noon Friday, afl day Saturday and Sunday, Alt spaces are SOLD OUT. * License Exams Novice through Extra, by reservation only. Send a completed form 610, a copy of your present license and...

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-channei receiver voting clock time announcements and function control 7-helical lifter receiver * extensive phone patch functions. Unlike...

M Ever Say

Tm deeply concerned about a type of mental illness, spread by hams, which is going around. It's not a new one -actually, it's shown signs of dying out in recent years. It's a virus-like illness which can hit peopte at any age( but which tends particularly to hit boys around puberty, For the lack of a better name, ( call it the Ham Infection HL 1 remember the first time i was exposed to it. I was about ten and my grandfather introduced me to Fred Stevenson W1CUN. Fred was slouched in a little...

Order Toll Free

PAC-COMM PACKET RADIO SYSTEMS, INC. 4040 W, Kennedy Blvd. Tampa, FL 33609 Tntl TELEX 6S02881526 WUI 54 73 for Radio Amateurs March. 1986 Individual (noncommercial) ,. _________________ . 2bc pe word Commercial - - 60 per word Prepayment by check or money order is required with your ad No discounts or commissions are available. Please make your payment lo 73. Rates for multiple insertions are available on request Advertising must pertain to amateur radio products or services No special layouts...

Maumeeoh

The Toledo Mobile Radio Association, Inc., presents its 31st annual Ham Fest and Computer Show to be held on Sunday, March 16, 1986, at the Lucas County Recreation Center on Key St., Maumee OH Hours will be from 8 am to 5 pm. Free parking Tickets are 2 50 in advance 3.00 at the door, Tables will be availabie and displays are limited to electronic, amaieur, and computer equipment. FCC examinations Technician through Extra by appointment only To apply, send a completed form 610, a copy of your...

Tower Values

Rugged TRYLON ABC* towers designed and fabricated in Canada to survive the severe northern climate, now available in the USA at ranging front 330 to 2500 and heights between 32 and 160 feet. H-Rx> t triangular sections in a modular tapering design. MADE TO LAST High tensile strength steel and quoiitv int s pea tKj tii ki i l*linurt avaibWe Zinnia ted steel bolts Virtually maintenance Irec Guyed aixJ lire-standing versions available shipped hictofy Direct and guaranteed ONE FULL YEA ft alter...

Wfre Resistance Measurement

Level from beginner to professional, Part 1 introduces each character by calling for the student to press a key, then hear the properly sent Morse code equivaient and view the character on the screen. The sight and sound combination is used for emphasized dual sensory) learning. Part 2 sends a properly formed Morse character and requires the student to respond by pressing the appropriate key, tf an incorrect response is made, the character will be resent. This will continue untiE the proper...

All Oscilloscopes Include Proses

TERMS salislaclion guaranteed aumlrtc Tar ID days il nut pleased, return in rigiriaE loin lor refund * ddri 6 lor shipping and insurance la a maximum pr HO.DD avertm dd iurl ct mill * COP add 5 SO C00 In USA nrtlv) * orderi under DO add 11.50 * NY reddenis adrti r sales ti* * 90 day parti wiTfsnlv on III kits 1 year piiti & la tor warranlv on atl Aired uruii

And Another Thing

The word is that a few of you have been busy doing more than just rag-chewing. I don't put much stock in these reports, but just in case you have been playing around with some crazy things like slow-scan, RTTY. satellites, moonbounce, or such, know that I want o hear more about what you're doing and, if you know, why you're doing it. It's been years since t used RTTY, so I hardly know where to start today. What do you recommend I buy Do you have to build anything Who's on the air for me to talk...

Pgk

A great helper for testing components, as well as experimentation and circuit development aveyou made the tran- cuits yet Perhaps, as in my sition to integrated cir- case, you find that inte- grated circuits aren't quite as convenient for the experimenter as has been rumored Let me explain that bit of heresy With discrete components, you c an th row toget her a simple circuit quickly by tacking the component leads together as required with an integrated circuit, the leads are so close together...

Auburn Ny

The Auburn ARA will hold its annual Winterlest on March 15, 1986, from 9 00 am to 5 00 pm, at the Farm Home 4H Center, Grant Ave, Route 5, Auburn NY. Admission is 3.00 tables are 5.00. Testing will be available. Talk-in on 147.00. For more information, contact Robert C. Bruno WA21TJ, 1 Birch Lane, Auburn NY 13021. The Midland ARC wilt hold its annual St. Patrick's Swapfest on March 15-16, 1966, from 10 00 am to 5 00 pm on Saturday and from 8 00 am to 2 30 pm on Sunday, at the Midland County...

Barry International Telex Merchandise Taken On Consignment For Top Prices

Monday-Friday 9 A M to 6 30 P M Thursday o a P V Saturday & Sunday 10 A.M to 5 P M, (Free Parking) AUTHORIZED DfcSTS MCKAY DYMEK FOR SHORTWAVE ANTENNAS & RECEIVERS IRT LEX -Sprlng St, Station Subway BMTPrince St. Station Path 9th St & tfc Ave. i Uonr Midland, StarWard Wilson, Yaesu. We serve municspali 1 es bijsk-nessesr Civil Defense, ale. Portages mobiles, ba es. rep- j-er ANTENNAS FROM 160-10 METERS NO COMPROMISE Just a few comments from our satisfied customers hnvfl ui d your 80 Q...

Bilal Company

S R 2t Box G2( Dept 91 Eucha, OK 74342 PH 91 25 4094 its other year are likely to be effective, too. Another possibility Compare the instructions with those prepared by another company. As a last resort, you might ask i salesperson or a manufacturer's representative if the instructions include all the information you'll need. It's not likely they'll tell you about anv shortcomings, but if they say, Yes. the instructions are complete and you find later that they are not, you may have a bit more...

Boap

Fig. 3 Diode-matrix wiring patternj, foil side, tors Reasoning that four extra lines give 16 extra possibilities, and needing only 12 12 bands), there was the solution, ready to use. The easiest way to code 12 bands 160, 80, 40, 20,15, 10A, 10B, 10C, 10D, Auxl, Aux2, and J J Y, the latter three having been modified for the new 17-, and 12-meter bands) into four fines is using a diode matrix, t wanted to use as few diodes as possible so I made up Table 1 first There's one code that doesn't use a...

Calendar

ARRL International OX Contest phone National 6-Meter invIL Net Activity Day Contest Robert Baker WB2GFE 15 Windsor Or Atco NJ 08004 DX CONTEST-PHONE ARRL INTERNATIONAL Starts 0000 UTC March 1 Ends 2400 UTC March 2 This annual DX contest for ail OX huniers is sponsored by the ARRL and open to all amateurs worldwide W VE amateurs are to work as many amateur stations in as many DXCC countries as possible on 1,8 to 30 MHz, excluding the 10-MHz band. Foreign amateurs are to work as many WA E...

Ipn

Keyer and delay-tune circuit because it is a miniature, low-ioss ceramic type. RG-58 U coax cable was used with the braid grounded from the SO-239 connectors to both wiper arms of switches S5A and 8. One bus wire (AWG 14) was used to connect the top of inductor L1 to both capacitors C38 and C39. The RFC1 choke is mounted directly across the rf-output S0239 connector The purpose of this choke would normally be to prevent high voltage from reaching the antenna in the event of a capacitor...

Call Toll Free For Quotes

VISA MASTER CARD FREE SHIPPING ON MOST REGS FOR CASH SA.SE. FOH OUR BENCH-TESTED' USED EQUIPMENT LISTING SA.SE. FOH OUR BENCH-TESTED' USED EQUIPMENT LISTING MON-FR 9 AM - 6 PM CENTRAL TIME SATURDAY 9 AM - 5 PM 4124 West Broadway, Robbinsdale, MN 55422 (Mpls. St. Paul) here is the next generation Repeater

Callbooks

The Flying Horse has a great new look It*s the biggest change In Callbook history Now there are 3 new Calf books for 1986, The North American Callbook lists the amateurs in all countries in North America plus those In Hawaii and the U.S. possessions. The international Callbook lists the calls, names, and address information for licensed amateurs in all countries outside North America. Coverage includes Europe, Asia, Africa, South America, and the Pacific area (exclusive of Hawaii and the U.S....

Compare The

After you receive the Atari ST, put it next to your Mac or Amiga or even IBM. See how extremely sharp the graphics appear, discover what a perfect word processor it is. how great the keyboard feeis and finally how much faster and quieter it runs, If you re not convinced that the Atari is far superiot to your present computer and a fantastic value, simply return it and 111 refund your modest down payment plus our postage and handling charges. If you decide to keep it, lit bill your credit card...

Cmc

Fig, 3, Pictorial layout ot the hum eliminator. dition of the filter capacitor, R1 and R2 were chosen to produce a 25-27-volt drop across the transistor Since the input ripple was only 10 volts under load, the drop is sufficient. The output ripple is nov less than .05 volts and the hum on the audio output is not discernible on my scope or with my ears. The output transistor should be rated for at least one and a half times the no-load input voltage Also, the transistor must dissipate the peak...

Computer Programs Aid In Radio Frequency Design

For ihc BM PC PCXT and PCjr Computers, the HH S'olei series cil 'Icjiign aidprogrmm Cln hrlp in wiving daily Fngtontfng proh. Intended an imtttpflflrivc tod Li, ihese programs nid in circuit design at well as serve Ai an in vjhjjMc source d rfffr ncr male rial RF Notes I am jud in MUrrCnfcfrProduct i-vjimlifttts. Riv OMrlCircuit FiJttr design Mitral rip -iini strip Line H V Mam Z will ismt j n impcAmtee Mnt chmfl ciian t design Inductor design lincJ udin Torotd& V Capacitor evaluation, and...

Count

Shift register and counter combined. Fig. 9. Shift register and counter combined. Though the circuit illustrated here has limited practical application, it serves to illustrate that the digital IC trainer is a convenient aid in the development of complex circuits. As the breadboard socket becomes crowded by the inclusion of more circuits, the space available can be extended simply by attaching anolher socket These sockets provide for such expansion by means of interlocking grooves. The...

D

SOLDEfl hi * TAST*mw CAPACITY TO OtO LEADS LEAVE LQHG LEAO& SOLDEfl hi * TAST*mw CAPACITY TO OtO LEADS LEAVE LQHG LEAO& f ig. 4 For the PCM-369 microphone, replace C3 with a smaller tantalum capacitor Leave long leads and let it hang over the edge oi the encoder board.

Enhanced Hfm Modem Option

The standard PK-64 wil- operate all modes with a phase-lock-loop (PLL) detector roughly equivalent to all popular packet modems in the marketplace (except we have included extra filtering). The enhanced HFM-64 modem option offers true independent dual channel filtering with A.M. detection (like the famous CP-100Computer Patch ), The enhanced HFM-64 option also offers a hardware LED tuning indicator (like the CP 100) and a front panel variable threshold control for setting maximum sensitivity...

Exchange

All stations wilt send RS(T) reports and give the following Canadians add province, UK stations add county, US stations add state, West German stations add DOKtf, Bermuda stations add parish. US and Canadian stations may exchange reports with West German, UK, and Bermuda stations only. UK and West German stations may exchange reports with US. Canadian, and Bermuda stations only. Bermuda stations may work stations in the UK, US. West Germany, and Canada only. Each compfeted contact, on each...

Ever Say

So. what have you found to work best in spreading HI Has anyone found demos in shopping malls to do anything Most of the ones I've seen have kept the public so far away that they couldn't see, hear, or understand what was going on. There's a self-destructive drive to show off esot rica such as slow-scan or RTTY at fairs and malls These are just ego-gratification exercises. )f we want to get HI around we may do better to stick to simple things like voice communications and rag-chewing. What've...

Flh

These are professional Commercial Grade Units Des gned for Extreme Environments (-30 to 60 C. All Equipment Assembled & Tested. COMPLETE SHIELDED RCVR. ASSY. VHF & (JHF Receiver Boards SCR200A-VHF SCR450A-UHF fl Pole Front End FMr + wide dynnmic range reduce* overload, spurious flesp 4 intermcd. Sens. 0.25 MVn2dB SlNAD typ. Sel -6dB t 65KHJt i30dB if 30KH H Pole Costal + 4 Polo Ceramic Fitrs Meter, Discriminator 4 Delation Mir. OutputsI Eac audio qwllly* fast squelch1 *JQ.0005 Crystal V...

Grosse Pointemi

The South Eastern Michigan Amateur Radio Association (SE-MARA) will hold its 26th annual Hamfest Swap and Shop at the Grosse Pointe North High School, 707 Vernier Road, Grosse Pointe Woods Ml, from 8 00 am to 3 00 pm. The Hamfest will feature an ARRL forum, DX forum, and a RTTY forum. Advance tickets 1.00, at the door, 3,00. Advance tables 8,00. ai the door, 10 00. Talk-in on 147.75 . 15 and 146 52. For more information, write to SEMARA Hamfest, PO Bo* 646T St, Clair Shores Ml 48080 or phone...

Hermitage Pa

The Mercer County Amateur Radio Club welcomes amateurs to socialize and exchange views at its JJHow To seminar on March 22 from 9 am to 4 30 pm at the Hermitage Middfe School, opposite Shenango Valley Mail on Rt, 18 in Hermitage PA. Topics will be presented on development of ham-shack skiils. License examinations (Novice through Extra class) will be given Examinees and those under 18 will be admitted free all others 2. Talk-in on 147 75 .15. SASE to MCARC, Box 996, Sharon PA 16146 for details.

Hzsd

Fig 6 n verier le el translator boardr component side. diode matrix and P20 are made, the construction is rigid enough to stay put without any other mechanical support. The inverters were installed inside the memory unit To take out the memory unit (metallic box near the speaker), it's easier to take off the black plastic cover of the rf unit and local unit Take off the cover of the unit on the component side A 2,5 x 25 mm (.1 x 1 border of the protective paint of the divider unit is scraped...

Included

Sngie D& j& e Defst. 1 i ea AO 90 track) t C Se al Pon . 75-9600 A 75-3B, 400 boud , 1 CinUOrtpQ Punter Port Power HeqwcFn nt * 5VDC at .75A, + 1 VDCflt.0SA On tjoancl- 12V convener Ooty 5.75 x 7,75 Inches, mounts directly to a 5-1 4'dhsit drive Compfehensfve Software included Enhanced CP M S 2 operaong sysiEin wtth ICP93 4 MHJ ZSOAtR, MK Z3 A at 4-3 KEP90M a wtcra fVjppr Controls l Orvirs. Sngie D& j& e Defst. 1 i ea AO 90 track) t C Se al Pon ....

Instruction Instructions

Discover hidden savings in the last place you'd ever look the instruction manual. Leon Herc ier N6HV C 274 Wt 6sler Drive Ben Lomond CA 95005 Recently I bought an an l tenna system consisting of the usual four units-tower, antenna rotor, and rotor control All the gear is nationally-advertised. widely-used, and highly-regarded by hams throughout the country. But every unit came wilh printed instructions which had serious errors, omis sions, confusions, even contradictions, Indeed, at least one...

Digit

Little programming board, where each bilateral switch closure is jumpered to the proper row-and-column input for that particular digit in the sequence. Fig, 8 shows the board programmed for a sample number. F g. 5. Layout of the main board, shown from the toil side, detailing jumpers and interconnect wires. and charges the PT1 holding capacitor (C3, Fig. 3), which holds the PTT on until the next high from 1C2 pin 4. This high from 1C2 pin 4 is also fed to IC4 switch A, via CR2, which keeps the...

Ytp

Preparation of the test leads. f 5. Setup tor using the Hara-Kiri box. After you have finished wiring the box, it's important to run a series of tests to ensure that the box is safe to use. With the line cord disconnected from 110 V acP connect the test clips together Connect a VGM (in the Low Ohms position across the blades of the linecord plug. You should refer to Fig. 1 when operating the switches. Any departure from the readings in Fig, 1 indicates either a defective switch or...

Jnc

ohn 1 Franke WA4WPL 1310 Bolting Avenue Norfolk VA 21508 That annoying ac hum is robbing you of pleasure. Fix it in an hour with WA4WDL's seven-piece filter Believe it or not everybody does not use solid state, twelve-volt-compatible equipment even in these modern times. ) have an old surplus ARB receiver that I use to listen to the short wave bands. I especially enjoy The World Service of the BBC The receiver has vacuum tubes, and I know several other SWLs haims who stiil use vacuum-tube...

Keyboard

Pipo Commune lions Has rhf Kvy board Thar Used With The Collins KWM 380 Fof Remote Entry. KEYBOARD COUNTING FRAME 4 SntPPP-G 2ii To know trio** d& ouf our Touch-Tone' Encoders CALL OR WRITE FOB FHEE CATALOG A INFORMATION GUIDE Pipo Communications P O Bo* 3J35 Hollywood. CA EftipftffiiA it on QujJiry S Rttiibtlily WAVE. - All Bfljirtal Automatic & Elacllon with 5 MoiflJfl-AL L i nlf uuponlng - Ground or raoi mourn Hi STRENGTH FIBERGLASS TUBING OV H ALL NO WOBBLY. LUMP* TRAPS - NO LTN-S Kj...

Kpa Wattcmatv Transmitter Board

APPLICATIONS Cordless pprtablft TV Cam rii for races & other public ft rvtce events. remote VCR ele. Rem le control of r airp nes or robots. Show home ideo tapes, computer programs, repeal SSTV to iQCaJ ATYeis DX depends on antennas terrain typ 1 to 40 miies FULL COLOR VIDEO & SOUND on one sma 25*4 board RUNS ON EXTERNAL 1 3 0 VDC at 300 ma supply or battery TUNED WITH ONE CRYSTAL > n 426.25, 43 0. O' 39 25 mHz 2 AUDIO INPUTS for a low Z dynamic and line N'vel audio mput found Iri most...

L

The + 5-V c regulator is attached to the chassis, insulated by mica for heat sinking, As you can see, there is plenty of room for future additions and expansions. The digital IC trainer simplifies testing and experimenting with digital ICs, The IC is inserted into the socket and is powered by appropriate connections to the power buses, which are jumpered to the + 5-V-dc and ground < on-nections. Components and jumpers are plugged into the sockets as needed to...

Largest Stocking Ham Dealer Complete Repair Lab On Premises

it I l - W 1 fill M For the best buys in town calf 1 m jT A C.fafft ro J J 212-925-7000 York KITTY SAYS WE ARE NOW OPEN 7 DAYS A WEEK, E H K Saturday & Sunday 10 to 5 P.M. H Monday-Friday 9 to 6 30 PM Th rs, to 8 PM Come to Barry s for the best buys in town. Sg B HESSS fc B tT, IC R71 A, 751. 745, 27A HL 37At 47A, R- e5 Sirnp , AuTopalcn HC-SA w l paich fv T raisce . T Telephone G ea' f t Telephone Calls From Mobile To Base Simple Triune S319 COHPUTIRE EXTINGUISHERS TO 500 E HTTYMIITOR...

Ljmpu Ii Compact Digital Multitester

Cor> i--.i(J sized rei aoihEy and lk < urac Tims LCD nig mi mum tester easily in our pocket you can tako il nT wrtere It features fuJi overload proieci'On * 3'.-digit LCD readout recesst d > ri > i.jr fit-Ms -. r jiy probes diode i i-eck function * aooo hours battery lite Cn rc traiw st< i J ides ar j LEDl-rt tn rhis profess ona9 quality meter Other features include, decibel scale 0K vott metering sysi m * 3 mrrr rfjred scalf.- * polanly sw*tch * 20 measuring ranges * safe(y probes *...

Lz

F ig. 8.Parallel up down counter development. 42 73 for Radio Amateurs March, 1986 in Fig. 6 Its input can be clocked using CP at a low frequency or PB can be used so that the division ratio can be determined Though useful for testing ICs, the digital tC trainer has been most valuable to me in experimentation and circuit development. For example, 1 was asked to design a three-flip-flop shift register cap-i ble of serial data entry, com* plement operation, up-count, and down-count While some, no...

Mfj Hour Lcd Clocks

These MFJ 24 hour clocks make your DXing. contesting, logging ahd SKEDmg easier, more precise. Read both UTC and local time it a glance with the MFJ-106, S19.95, dual clack that displays 24 and 12 hour time simultaneously. Or choose the MFJ-1U7. 9.95 single clock for hour UTC time. Botn are mounted in a brushed aruminum frame* feature huge eaiy-io-see 5 8 Inch LCD numeral and a sloped face that manes reading across-the-shack easy and pleasant.

Mal

Grid and anode of the triode are connected to both ends of the circuit, the whole thing forms a Hartley oscillator that happily swings ai around 29 kHz (according to my measurement) So that is the quenching signal. The adjustment for optimum results as a superregen erative detector is always a bit critic al, and this one is no exception. Both R1 and filament-current control R2 have to be readjusted when the frequency has been changed more than a little, to obtain the famiiiar rushing noise The...

Miniature Toggle Switches

on-on) i (on-on) rf (on-off-on) j PC siyii Solder lug Solder lug jgJ non-hairj+isiFHfj X tornnnaK Ic-rninHi1- - fwj but inp m I Si.00 each f 7TT SLOO tn r , 75t each T 10ior 9.Q0 .' l forSfl.OO 10 Tor 1700 If u II 100 tor SBO.OO 9 l00lor S0 00 (on-oft-on) ( (on-on) (o -oaj PC ir e H PC i.igg Solder lug non-thr t l iV f rpao a fr iirtttlnaFfi fr J bushiirc J r T bushing S2.00ea h .K fSceath St.00 eath ft-tnT 10 tor S19-00 10 'or 17 00 tit 10 liirSS ' U 100 Iof 1 Q 017

Mike

A supe* aemi arnpri J e' nn.n .il il - i.f- i pjfidfopji liTt l' Qrfe l rfj m i ir i -. i Hiiiur ul i Lj i pose ompliMi r Full 3W rrn uni j i runt on 6 to lb volli ute B -M o 'm ter which allernareiy riosrif jLM'IHiH.CDT butic rit WFirn nd pflruab jhla. yH> lr.i l .,, i 1,, lj, CoinfilPU' kit BL 1 12 A njpor high perl imBricK TM wire-iTiiKj kii1 Trnnannlfi .i utabta dgnai up 300 yards wiin no'p Iionm BlidLO quahly by u-Mu t lj.'I ir eleolfiet mjkr K i in* .-ci ca4t> nulle. Do-ott iwrtcn...

Packet Radio Goes Portable

5< XOER 'I EP .34TE CABLED EflF LOW 25 m A Current drain DeaigneJ 1 c. r pgrlablft dr solar ppwared talions Miniiitur-e ateft -ilaMlwpiflhl Rugged atl metal, nhmWofj enclosure O i ward *aichdog 1 m at itv Standanj D6 25 CimwEo** Outptf signai ,. j . .j-r.- . Con-Sidtu Does nc requite r> jtje i J auC s C t *j h 8K jr pai,< Remole Gomman< j Mc*3 'm Unai rtTdect op Tgi ir Hardware commint lockout tor secur> t> M df PKT Atteins a 0+-cr featUT& 6 Uotei PKI Extra I O Unes *dt special...

Partial List Of Features

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

O

H J t.EYEfr frV - RE LH Y IM i TTV LM'iF glad you find this column as useful as l hope it is, and will continue to try to answer all your questions. Glenn Farnsworth K2EHM Howdy Dol As another Apple user, I hope you have inot been discouraged in your attempts to get onto RTTY, Again, I hope the material I sent along will provide some aid, and i hope to see you on the air real soon, Let s see who else I can find in the file- Tom Dillon WJ6M of Los Gatos CA thanks for the comments and hope you...

Packet Radio

USA AX.25 is the AMRAD approved digital format STANDARD used on amateur packet radio networks, System Tested 4.5 x 61' board complete with all ICs and programmed EPROMs personalized for each purchaser. Requires only single 8-10 volt Va amp power. 1 year guarantee of hardware software AX 25 standard RS232 serial ASCII at any user baud rale_RS232 HDLC for 202 modem used for AFSK or direct to equipment for FSK. Assembiedrrested. No ICs, 90day warranty Package of all ICs except 2 2716 EPROMs 80.00...

Region Conference

Delegates and officials to the 6th IARU Region ill Association Conference. Aucklandr New Zealand, November, 1985, Photo courtesy of Sreak In, NZARTofficial magazine, Indonesia, and China arrived, the People's Republic of China, Also on this flight was David Mr+ Wang Xun and Mr. Huang Evans G30UF, general manager of RSGB. The final group of six, including Dick Sutler, the secretary general of ITI arrived at 10 pm. At last, after many hours of preparation, all delegates and observers were...

Rio Cw Dx Party

Sponsored by the Pica-Pau Carioca (Rio Woodpeckers CW Group), PO Box 2673, 20001 Rio de Janeiro, RJ, Brazil with the cooperation of all other Brazilian CW groups. The purpose is to promote 2-way CW contacts beiween Brazilian and DX stations, enabling DX stations to obtain QSLs valid for several Brazilian Awards, The event is held twice each year on the last full weekend in March and the second full weekend in October, The general call is CO RIO DX PTY. Use all HF amateur bands within your own...

S

Ail entries must contain a log consisting of time in UTCn call, RS(T), state, Wl county, mode, and a score summary. Summary must include your name, address, and caNsign. Circle new multipliers as worked. Logs containing more than 100 QSOs must be accompanied by a dupe sheet (use a separate dupe sheet for each mode). Mobile entries must indicate county changes in log and submit a separate dupe sheet for each county. Entries must be postmarked by April 15 and senl to Wisconsin QSO Party, cfo West...

The Answers

Element 2 1 False, Old Betsy 2 False, Between Baltimore and Washington 3 False, It printed dits and dahs on a slip of paper, 4 True, From 1826 to 1845. after which telegraphy increasingly occupied his time. 5 True, He was an instructor at New York University, located just a little north of Barry's. 7 True, And it sort of caught on 8 False, Morse never did apply a buzzer or other sounding device to his invention. That honor went to a fellow named Alfred Vail 9 True, Who...

Simplex Semiduplex Interconnect

The telephone is the most powerful mode of communications PRIVATE PATCH III gives you full use of your home telephone from your mobile and HT radios VOX based phone patches offer many performance and operational advantages over the sarnpMng method. These include operation through repeaters, compatibility with any radio, no lost words or syliables. greater range, smooth audio free of continual noise bursts., etc., etc. Most amateurs are not aware that the competition's top of the Sine patch is...

Tjj

HP 62SA SIGNAL GENERATOR, 15 GHZ TO 21 QHZ, CALIBRATED OUTPUT 10 MW TO 1 PW INTERNAL, EXTERNAL SQUARE WAVE PULSE. FM MODULATION UflV-25 MILITARY SIGNAL GENERATOR 10 TO 50 VHZ_ RF QUTpUT 0 M , TD VOLTS AMICW ivX.'O00 HZ MODULATION 50 OhfM STOP ATTENUATOR. SMALL POfiTABLE UNIT URM 2 MILITARY SIGNAL GENERATOR. 4 MHZ TO 406 HHT. CALi HEATED OUTPUT ATTENUATOR OW TO 2 VOLTS, Ay CW JOO.- OOC HZ MODULATION SMALL PORTABLE UNIT . . (345.00 marconi TF 10686 SIGNAL GENERATOR 10 MHZ TO 470 MHZ, AIWFM...

Tr

The TR-9130 is a compact rig that gives you waits of RF power on all modes You can select your tuning steps From 100-Hz, 1 -kHz, 5 kHz or 10-kHz. Wfth six memories, you can program your favoote frequencies1 (FM 1-5 Simplex or G00-kHz offset, memory 6 non-standard offset, ail s*x for simplex, any modeT> Dual digital VFO's. and transmit frequency tuning enhance OSCAR operations * TK-1 AC adapter tor memory back-up. * MC-55 Mobile Mic w time-out timer.

The Us Tener S Ha Ndbook From Grove

Two of the most popular Grove books were Bob Grove's Communications Monitoring and Behind The Dial, now out of print. The basic subject material has been taken from those two books, extensively reorganized, updated. and supplemented, with new illustrations and photos. The result is The Listener's Handbook, Virtually every topic of interest is explained in Bobs easy-to-un-derstand manner. Subjects include the radio spectrum and its users secunty and surveillance equipment and techniques,...

Where Am I

THE TOP SECTION of our Top Band is no longer exclusively an amateur allocation. In order to provide additional spectrum for radiolocation systems that may be displaced by an expanded AM broadcast band, the FCC has given those systems primary status on the band from 1900 to 2000 kHz, Amateur stations may use this segment on a non-interference, shared basis and cannot expect protection from radiolocation signals. It's not as bad as it sounds, though, since the locators will be using...

Yes

I Start my no-risk subscription today and send me 12 issues ' of 73 for 19.97. I'll save 33 off the newsstand price CHECK MO n Bill Me plrriK tnale checlt pnyable to 71) Canada & l Mexico 12.97, I year nniy, US forictn drawn on US bank-Foreign surfac j9,97i I vepr tinly. US flinch Jrawn on US hank. Foreign airmail* plrase inquire. Please allow 6-8 w Vs Ibr ddivrry.

Tsatsa

Quick-Step luning that varii-s tuning characteristics from conventional VFO feel, to stepping action when CH.G switch is depressed. Combine all these features with built-in AC power supply anci a iefty 25 watts RF outpul power and you have your deal oase station CD-10 Call sign Display T -5 CTCSS Tone Unit VS-1 Voice Synthesizer * MC-60A Deluxe Desk Mic MC-80 Desk Mjc MC-85 Desk Mic SP-430 External Speakers - MB-430 Mobile Mount Multi-function all-mode 2 m and 70 cm transceivers. The TS-711A 2...

Tty Loop

You know, sometimes il occurs to me that month after month have been asking you for input on what you alf consider important RTTY topics. I get quite a kick out of your letters and try to answer every one of them. What have f arled to do, however, is Jet the rest of you in on what your vocal (prolific) buddies have been saying. One of you, who shall remain nametess for reasons lhat will become obvious, writes that he has obtained a copy of Clay Abrams' RTTY program, detailed here last month,...

Morse Code Tapes

You read about it first in the New Products section of ham radio Many methods have been offered for learning Morse Code, some good and some nor so good. This is a good one * Have you ploteoued at 70 -13 WPM MASTER the code in 40 less time. The method based on fhe scientific principles of Skill Acquisition and Perceptual Learning Four cassettes teach the entire alphabet tn 25 trioli at 20 WPM Includes numbers, punctuafIon, special j__characters, and an ajj new inlra tape. Send-ZTse sj< FST...

Bugged Beads

THE LAST THING a guy wants to worry about is his beads, nght Well, start worrying CCS Communication Control, inc., recently discovered worry beads which contain an ultraminiature iradio transmitter, in the Middle East, worry beads are ubiquitous they are carried to business meetings, while traveling or dining, and so on. CCS was called into action by a gentleman whose business dealings were somehow being leaked to his competitors What the company found was two sets of beads with a tiny...

User S Report

Mmt 144 28r

Ralph Bilal gives you a complete set of instructions for tuning his antennas, and the 160-meter version is no exception. I placed the antenna on a seven-foot mast at ground level and began the preliminary tuning procedure using an MFJ antenna-noise bridge and the station receiver. The antenna is designed to be resonant, as received, just above 2.0 MHz, and Ralph recommends that you try it out under low power to check your swr at a frequency just below the top band edge The antenna environment...

Mobile Ignition Shielding

Estes Engineering, 930 Marine Drive. Port Angeles WA 98362. BNB006 MILITARY TECHNICAL MANUALS for old and obsolete equipment, 60-page catalog, 3.00 Military Technical Manual Service, 2266 Senasac Ave,, Long Beach CA 90815. BN 045 HAM RADIO REPAIR, tube through solid state Robert Hall Electronics, PO Box 8363,, San Francisco CA 94128 408J-729 8200. BNB219 OSLS to order Variety of styles, colors, card stock. W4BPD QSLs, PO Drawer DXt Cordova SC 29039+ BNB260 date, informative,...

Faster Than A Patch

Dial home while driving by simply pushing a single button on the microphone. Craig Oichton K7UKW 2540 Esst 12th Street The Dalbs OR 97058 Its Friday afternoon You're caught in heavy rush-hour traffic. You're going to be late getting home. It would be nice to punch up the patch and advise your wife to adjust dinner time, but do yon dare risk dialing in this traffic Sure If your rig is equipped with thh speed-dial circuit, your eyes never have to feave the road This article describe* circuitry...

March

Gadgets, gadgets and more for the tinkerer And yes, Wayne's back. Photography by Frank Cordelle, igton+ NH. 78 Special Events 82 Letters These units were ordered destroyed after WWlt, but a few feii into the hands of collectors. Now, after 40 years, PA0SE anafyzes the Imperial Army's secret That annoying ac hum is robbing you of pleasure. Fix it in an hour with WA4WDI S seven-piece filter. 20 Faster Than A Patch, It's Speed Dialer Dial home while driving by simply pushing a single button on ihe...

Micro Control Specialties

Division of Kendecom Inc. 23 Elm Park, Groveland, MA 01634 (617) 372-3442 temporary license and more paperwork, along with a request for two certified photos plus iwenty US dollars, cash only. Again, much later, t received the photos back because they were written on. How else can you certify them asked the US certifying official Straightened that out supposedly, and later received another temporary license application. Here it is, December of 1985, and two weeks ago received another very...

I

Quential htghs from the counter are AMDed with the free-running clock to produce first a dual tone and then a quiet period for each digit produced. The reason for thts is so the telephone equipment can distinguish between two sequential identical digits. For example, in a phone number such as 296-5114. ii there were no quiet period between digits, the phone equipment would only see 296-514, with the V being twice as long as the other digits. Telephone equipment specifications require certain...

From Digit Sequencing Switches On Main Board

Fig 7 Solder side of the program board, showing interconnect routing. just fit if their leads are bent tightly down against the ends of the resistor body Pay attention to Fig. 6 and get the diodes in correct-iy there are two diodes near the center of the board that are reversed from the others. Next, install all the jumpers on the main board Fig, 5 shows these jumpers along with the other interconnect wires. Be sure to route these jumpers around the areas where the four ICs will be placed. We...

Am Help

We are happy to provide Ham Help listings free, on a space-available basis. We are not happy when we have to take time from other duties to decipher cryptic notes sera wled illegibly on dog-eared postcards or odd-sized scraps of paper Please type or print your request (neatly , double-spaced. on an 8- 1 2x 11 sheet of paper and use upper- and lowercase letters where apppropriate). Afso, please make a 1 look like a 1 not an I which could be an el or an eye, and so on. Hard as it may be to...

Mfjq

They are battery operated so you don 't hato to reset them alter a power failure, and battery operation mafcas them suitable Tor mobile ahd portable use. Long life battery Included. MFJ-106 is 472*1x2 in MFJ-107 is 2ttx1x2 in. RTTY ASCII AMTOR CW mfj-iks COMPUTER INTERFACE 179,95 Everything you need it Included for tending and rteaivlrn) RTTY ASCII CW on a Commodort 64 or VIC-20 and your him rig. You get MFJs most advanced computer interface, software on ta& e and aH cables. Just plug in...

Icro

15 Pin Haader A Mating Socket, V*n MT PC Crystal Citx k Qtolia or 50 3. 3DGuF35V A .al t t'7 f> - NlCh ll.Vr. coils for rj.lio elfte* fob 04 tv Proitti. toko is h. t 2 l 1 il2uh> A L-a (87TiiH Complete S < Of AH 4 o 111 , ,T. 3 50 47 0 ui 16V tA> -i I 4 1 00 VollagefteguJalofMPrinwfT > 220) 7B05 7Sl2,ra24 3 100 Mich I i i'ii 1 iiit ur , f or TO 220 Pky . 20 1 00 Vol lag Reg's i Unmarked. 60 Prime May Include PoviiWNeg & Actual l 5 1 00 78L08 Voltage PeglOM 106.TO-92) 20 1 00 2N530...

FEMA Fans

A PAIR OF H VMS from the Westchester (NY) Emergency Communications Association recently let their government know just how important amateur radio can be in a disaster Rich iMoseson N2BFG and Don Storm K2MQR spoke before a disaster-preparedness seminar sponsored by the Federal Emergency Management Agency, The talk included a video tape of hams performing emergency communications during disasters in California, and a handout containing names and tefephone numbers of local amateur emergency...

Antennas

MfRAGE AMPLIFIERS ASTRON POWER SUPPLIES Saxton Wire & Cable MAIL ALL ORDERS TO BARRY ELECTRONICS CORP., 512 BROADWAY, NEW YORK CITY, N Y 10012 We Stock AEA, ARAL, Alpha, Ameco, Antenna Specialists, Astatic, Astron, 8 H, 8 A W. 6ashf Bencher, Bird, Butternut, CDE. CES, Collins, Communications Spec. Connectors, Covercralt, Cushcraft, Daiwa. Dentron, Digimax. Drake, ETO Alpha), Eimac, Encomm, HeiU Sound. Henry. HustJer (Newtronics), HyGaia Icom, KLM, Kantronics, Larsen, MCM fDaiwa), MFJ. J.W....

Microlog

Morse code and all speeds shifts of radioteletype. It comes with a cable to connect to your radio s speaker earphone jack, demo cassette, and an excellent manual that contains a wealth of information on how to net the most out of short-wave digital DXing, even if you re brand new at it. For about the price of another Pac-Zapper game, you can tie your Commodore 64, 128 or VIC-20 into the exciting world of digital communications with the Microlog SWL. 64. Postpaid, U.S. MICROLOG CORPORATION,...

Instruction

To accommodate the ham who already has a bumper mount and whip antenna, or the apartment condo dweller who wants to match a random wire. ICOM presents the AH-2 automatic antenna tuning system for the IC-735 all band HF transceiver. The AH-2 Is Ideal for mobile operators since there Is no manual antenna tuning needed. an advantage In Inclement weather. Also the AH-2 system enables auto tuning in areas where antennas are limited, such as apartments and condominiums. panel of the AH-2a controller...

New Zealand

Jt Des Chapman ZL2VR 459 Kennedy Road Napier New Zealand As promised in my last column, I am able to bring readers a report on the JARU Region ill Conference held in Auckland New Zealand, Nov. 12-17, 1985, through the courtesy of Break-In magazine reporters. Craig Crawford ZL3TLB and Scott Campbell ZL3NR, They made their notes available to me as I was unable to be present ai the conference. H would be difficult to find a more picturesque venue than the Rose Park Hotel in Parnell, Auckland....

M

Photo Ar The MMU200S, ZOfrWatt, 144-MHz power amplifier. Photo Ar The MMU200S, ZOfrWatt, 144-MHz power amplifier. ployed a Hewlett-Packard 8640B generator and 8554-141T analyzer. No noise-figure measurements were made, due to the lack of the right test equipment. The first test we ran was receiver conversion gain, claimed to be 22 dB 1 dBm by the manufacturer. We measured 19 dB at 144,0 MHz and 20,8 dB at 146 MHz. A second unit measured 21 dB at 144 8 MHz. Sensitivity was found to be 0.07 uV...

Philippines

Almazon WA6LOS DU2 10098 Knight Drive San Diego CA 92126 Mel Bednar K6LPN DU2, current trustee of the Cenirai Luzon Amateur Radio Club CLARC . Hello, everyone Now that 1 have more free time, you probably will see more articles about the state of hamming here in DU-land. I would tike to congratulate the officers and members of PARA, the Philippine Amateur Radio Association. for its 52nd anniversary. Engr, H. San Juan of the National Telecommunications Commission said that his office is...

Armadillo County Tx Mar

To commemorate Texas' ses-quicentennial year Armadillo County has been created by Governor Mark White. Any ham operating from those highways marked The Texas Independence Trail may sign Armadillo County, Texas. The Texas DX Society is planning to operate special-event station K5DX A on March 2. 1966. Armadillo County has been sanctioned by the USACA. For further information, call Tom Taormina K5RC at 713 -489-1152 or write the Texas DX Society, PO Box 540291, Houston TX 77254-0291, The Dalton...

Usa

SIS DO tor t year Mexico, Canada S25 00 Fweign S3S OftFand tSS OOfair Permanent ill S Subtdnpiion SiQO.GO 1704 Sam Drive Birmrhgfiam AL 35235 205 BM0271 Peter H. Pat man KT2B 84 Burnham Road Morris Ptains NJ 07950 The author welcomes inquiries and comments but regrets that he cannot take telephone calls. Please put your inquiries, comments, and submissions in writing. Thank you for your cooperation. Continuing our discussions fromi last month on transverters Savaral readers have written...

Sotron Solution For The Meter Band

Small 160 Meter Antenna

Since the opening of the 160-meter band to amateur use, the 1,8-band-selector position on my FT 102 has been gathering dust. Like a number of hams, I simply do nol have space to put up a 252-foot-plus wire antenna for 160 meters. Even if space was available I doubt if I would consider a wire antenna because of the difficulty I had in getting permission to put up my 5-band vertical at my apartment. It would be nice if there was a zero-space antenna for the 160-meter band Baltimore, Maryland, is...

Kansas City Keyer

Dayton, Lance Johnson had a booth there, on a comer I think it was, and he was hawking a keyer, pretentiously claiming that with itT CW would never be the same again. I can remember seeing a group of ogle-eyed contest types huddled around the display, listening to the code coming out of a tan box, their fingers twitching and their smiles broadening as Lance led them through his spiel. The next time I thov ghl of Lance Johnson's Kansas City Keyer was a tew hours after a grueling ARRL...

Ptt

Fig, 3, Partial schematic of the existing DTMF encoder showing points of connection to the new circuit made by Mostek, part number MK5087N, The front of this microphone is labeled PCM-369. n general, if vour Azden transceiver is a PCS-3000, you will have this type of microphone Briefly, this circuit consists of a decade counter driving a set of eight isolal ed switches in sequence, as shown in Fig. 1. tach switch connects a row to a column on the DTMF generator just as the actual touch-pad...

Roller Inductor Tuner

Meat the VerrrTmrr-ViVWw-fltmpaet roller Inductor tuner ha lets you run uu to 3 KV. PEP and match everthing from 1.8 to 30 MHz Designed to match the new smaller rigs, the Mf J-989 is the best roller inductor tuner produced by MFJ. Our roller inductor tune1 features a 3-digit turn counter plus a spinner knob for precise Inductance control for maximum SWR reduction. Just take a look at ail these other great features Built-lin 300 watt, 50 ohm dummy load, twIIHn 4 1 balun and a bullWn lighted...

KENWOOD

Compatible with Kenwood's DCS Digital Code Squelch , the DCL system enables your ng to automatically QSV to an open channel Now you can automatically switch over to a simplex channel aftei repeater contact' Here s how it works The DCL system searches for an open channel, remembers it. returns lo the original frequency and transmits control information to another DCL-equjpped station that switches both radios to the open channel. Microprocessor control assures fast and reliable operation.The...

Spectrum Communications

Super Regenerative Receiver Explained

Germantown PK, S3 Norrlstown, PA 13 03 215 31-1710 Telex 40-211 8 73 for Radio Amateurs March, 1986 Dick U Rollema PA0SE v d Marckstraat 5 2352 RA Leiderdorp Netherlands These units were ordered destroyed after WWII, but a few fell into the hands of collectors. Now after 40 years, PA0SE analyzes the Imperial Army's secret radio. Communication equipment used by the Allied forces during WWII has become well-known among amateurs, no doubt because enormous amounts have been sold by...

Circulation Manager

WGE Corner Peterborough NHQ345B-1194 603 92 9261 Wayne Gre-n Enterprises is a division o11nternationa Data Group 73 for flad Amateurs 1S N 0745-080X cs pubtwhod monthly by WGE Publishing Inc , a drvttion of Wayne Green Enterprises. Inc , WGE Center. Peterborough NH 0345 1 Eniire contents 19B6 by WGE Pubtishing, Inc No part of ihts pubiicalion may be reproduced without written permission from the publisher HS-5 Deluxe headphones. HS-6 Lightweight headphones. Amplifier ifor TR-2600A BNC-BNC...

R R R R R R Ft

Table. 1. lumper programming connectons. ishing touches on the project. This consists of attaching a small cylinder about one-quarter inch high around the push-button dial switch. This prevents accidental dialing when reaching for the microphone or holding it in your hands. It will not allow a casual brush to trigger the switch, but an on-target finger tip can still very easily trigger the dial sequence when desired The material for this protection ring can be nearly anything you can imagine. I...

Go Rail Mobile

The idea to work Rail Mobile on the Trans-Australian Railway from Adelaide to Perth developed from a suggestion that two Australian National-employed amateurs. Keith VK5VAX and Graham VK5BGP. undertake the activity in their off-duty period, with the approval of Australian National, The proposal that eventuafly gained acceptance involved the allocation of two Australian National tickets, the provision of a Weg-man 1st class coach for the trip, with media publicity to be sought by Australian...

Ldto

ROMpak formatting worksheet. case you will have to expand the menu. If you have fewer than seven and you wish to load more into the ROMs at a later date, the area of ROM where the future menu lines will reside will have to be left blank The lines reading FDB 5 gt 0D0D simply space the menu lines apart on the screen. The program looks for a if F value to end the menu screen This can either be put in as in the program or assumed as unburned ROM modified, tvpe A AO As the assembler scrolls...