LNW

RT44 R220 FM RCVRS tor 2M or 220 MH . 0,15uV sens, 8 pole xtal filter & ceramic filter in 1 f, hehcal resonator front end for exceplional selectivity, MOOdBat - 12kHz,bestavailabfetoday.FFot-ier proof squelch. AFC tracks drifting xmtrs Xtaioven avail Kit only 138 R451 FM RCVR Same but for uhf Tuned tine front end, 0-3 uV sens. Kit oniy Si38. R76 FM RCVR for 10M> 6Mh 2Mr or 220. As above, but wto AFCorhel res. Kits only 118. Also avail wM pole filter, only 98 kit. R110 VHF AM RECEIVER kit...

Other Radios And Accessories

Panasonic RF-2& 0Q-EA Shortwave 179.95 ftDfiS-EA Uniden Remote mount Radar Detector Si 28.95 RD55-EA Unfden Visor mount Radar Detector 596 95 ROS EA Umcfett Passport gtze Radar Oetecto' 95 B C110X w- EA Sea tea t2Q channel UCsnner SALE S209 95 aC-WA-EA Bearcat Weather Alert* 49.95 DX1GGO-EA Bearcst shortwave recenrar SALE 95 PC22-EA 0 remote rr-ount C& iransce v*t S99 95 PC55-EA Utmot)lie mount CB transceiver 59.95 R1060-EA ftefi PiiCi + 0 crlanne' scanner SALE S3I- 9s MX3000-EA Regprrcy...

Kantronics

A new terminal node controller, the KPC-2, is now available from Kantronics. The TNC features multiple connects (up to 26 at a time) a built-in IHF modem. RS-232C or TTL operation, and AX.25 version 2 protocol. If you are having trouble easing into packet technology, consider Basic Packet, a video tape designed to teach the fundamentals. For more information about the KPC-2. or about Basic Packet. contact Kantronics. Inc., 1202 East 23rd St . Lawrence KS 66046 (913)-842-7745. Reader Service...

M

StRV'NG THF INDUSTRY SrNCF W Phone 718) 646 6300 Cat CECD For Your CC T V Security Ana Color Production Requirements StRV'NG THF INDUSTRY SrNCF W Phone 718) 646 6300 Cat CECD For Your CC T V Security Ana Color Production Requirements CMC COMMUNICATIONS, INC. 5479 Jetport industrial Bivd - Tampa, FL 33614

Oscar Mode Bal Amateur Television

Quency close to the required frequency until the v< o is synchronized When synchronizing the oscillator, the LED should yo out. To obtain a maximum range ot loop synchronization, the ico resonance circuit should be tuned in such a way that the oltme-ter shows about 11V The above method of aligning should be repeated for all operating bands ol the synthesizer. The FLl. band synthesiser described above operates with an interval equal to 1 MHz. In case it is used for oscillator stabilization...

Fcir I To I

440 IPS 0 THEN GOSUB 870 50 if se - 1 then 00sub 090 40 TAB 11 i HTAB 19 PRINT A 490 FOR Z - 1 TO 90 NEXT 2 TO 400 r m br ill tl WW PRIWT SPi T MANY CHARACTERS CH 52U HOME PRINT * GET RFADY TO COPY CODK 530 FOR Z - 10 TO 0 STEP - 540 VTAB lis PRINT t'AHi 19) 2 FOB DD I TO 5qu NKXT DD IE 2 10 then vtab 11 print iab( 6 0 if s th n cosi'b 870 660 rext s COSUB 910 gs(j z> 0 prts-t *bnto character * m Zl t24 ciet ust IV IS - qsi.z) then print correct'ic c + i 730 if us < > qs(z) ttien print...

Timonium Mo Aprs

The Baltimore Amaieur Radio Club will present the 1986 Greater Baltimore Hamboree and Computerfest on April 6 at the Mary* land State Fairgrounds Exposition Complex at Timonium MD. Gates open at 0 am. The fairgrounds are located east of I-83 exit 17, three miles north of 1-695, just norlh of Baltimore, Admission is 4, children under 12 free. For further information, contact G B H & C, PO Box 95, Timonium MD 210930095, or call (301)-56M282, For a recorded announcement, dial (301)-HAM-TALIC...

On Call

ON CAL l. 5 a con pi ate elective cal I yttem so you don't ha*e 10 n XQ the ot t tjr tm used i .1 l od control nfl *t Ihi tepeais* utc ftno si home. Compir rhese i Hurn drflit 16 lone HKjuentFal decoroer programmable. 434& D Out-lerani codes DTMFH Format with Auto reset I A MP SPST relny output momantery latchrul lor animal paging device, outn as Au 0 hum Iftfli recardflr tpaakur AU(JFO ctC Flashing LED call indicator Ertsrgtifri von' -rode nas easy Connection ic any rati> 0 Tra e Man...

L Mb

Ating a multi-operator single-transmitter (multi-single) DX phone contest. We found that having boom-microphone headsets for both operators was invaluable when working split frequency on 40 meters This is necessary since European amateurs cannot transmit above 7100 kHz Here the monitor function allowed both of our operators to know when the other was transmitting. Another benefit was found when using a closed-loop CQ tape there was less clutter involved in patching the tape-recorder audio into...

Model Ttk Aa

Use ytairenmpuuir toi ecode tourhtones ReceivealMfiif itsas fast can 0u transmiL- ted Easily program your computer in BASIC ttf decade mu(tilliq* r 'strings' diBpirjy digfta sound Hlurma. obser f seicrat (Mitral relays * Sim pit to ijpt . just providi -M2 VDC and audio, hank two wires to the RS-B32-G serial input on yuur computer enter simph- frASIC program Tie-g n i-j dauode Sampif BASIC prdgran and . structiors included DaL i mdicaTjjr VUired and tt& ted SSiaOl TMFRoxiw * R mrve IB DTMf o...

They Am Asteau

It ea of for s doc G 71 fA CW PCP fcT- X tti* EA Gfl FOR HUB U LAW 1 FOP iEin I I LA o FOF I1 V EA CP* tc K ru ii tf me tvA EAOP RWtSC t3 i EA CP W FOR DU FOR 1 FOR JZfc i PP1.E It kfK1 APPLE W' COU( LFTtli Pew MK JH ntf IfftuuJ. H(H . IiH-F wtmH lM U> rtnn I.J'UE II JnfrlHCt *ZHVrt 11J11V H MTT- om 4 1 1-i t ph* *h'Pf> ng APPLf POWER SULLIES . -MI litt (ff HK-fU-9B Hai i 8p*cJ< < Prie* i Mr i.i Nil ha i iin i i kdlllvnat cab-tnEifn irny choR. i it B lor ISilOOfSI Pai'nr Supotv. beam up...

Reader S Service Cards

I don'f know why the previous publisher of 73 dropped the reader sen ice cards but they're back. The cards are there for you to use to get more information on products you're interested in buying. Buying ham gear is a lot of fun. I donHt know of much more exciting than opening up a ham rig carton and setting up a new rig. Please remember that it's the advertisers who make 73 possible so treat them kindly. They get all excited when they think you're interested in their products. so give them a...

Switches

Instantly 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 static and Ugntnmg. 2 KW PEP, 1 KW CW. For 50 to 75 ohm. Negligible loss. SWR, and crosstab gives high performance. SO-239s, Convenient desk or wall mounting MFJ-17D2. 19.95. 2 position . Cast aluminum cavity construction gives excellent performance up to 500 MHz with better than 60 dB isolation at 450 MHz. Heavy...

Info

The center of the ham radio universe. WA4BPI 24 Your Bridge Over Troubled Antenna Tuning Is your antenna less ttian ideal Put more fire in the wire W3MT 27 Stretch the GP Antenna to the Max This, the simplest of ali antennas, has much to recommend it GW3SB G3SB 30 The Care and Feeding of a Curved Linear Array Antenna System For low cost, very low maintenance, yet acceptable performance, try this antenna system for use in high-frequency amateur radio operations N6B1S jf 15 meters sounds dead,...

Radio Engine

SAN DIEGO CA, 92111 Ctrl No spooJ. aves slipping charges AMPHENOL Conr fltfof A Adiptom UG 21D U6- 1D PL259 UG-146 U UG OU UG-29A M-lype barrel conn 4.75 iftl fit for 0ELOEN 9913 cable U.S. GeoJogical Survey Maps Cocnptete N J Inden in slock - plus + CQUPLETZ STOCK SAME DAY SHiPPWG t j(m roule t . Hinover N J. 07936 301 087-6*24 TULL WAVE - ft'- *utor. juc n* mttn hi-gtr m -j maden al_l serf tupp& rting - giauni or rest mount. HI STRENGTH DSERGLASS TUBING OVERHAUL. NO...

The Answers

1 2 Data is contained In packets or bundles of data. A very frequency-efficient way to send information, since the transmitter is keyed on only when data is sent And data is always sent at ihe fasiest possible rate. 2 2 A packet may also contain such nonASCII codes as Baudot orEBCDtC 3 4 Helps to keep users from hogging a Channel, 4 3 After years of lobbying by hams. 5 2 Band conditions and frequency constraints are the limiting factor, 8 4 But I bet you they eventually will. 10 1 Just a fancy...

Royalty To

Having parts kits is a waste of time unless we have articles on projects you want to build. What I have in mind here is some good old-fashioned bribery. Greed usually works just fine as a motivator. So here it is,. if you make a gadget thai you think 73 readers may be interested in duplicating, write it up, take some pictures, and submit an article. If we accept it. we'll pay you for the article upon acceptance something some other ham magazines I could name don't do. Secondly, well work with...

All Are Spacing

VI ' ' i Tl * UM13B1-1 Decried IdftmewlltlT I Com- pul ri. Can beu-ied wilh yideo soutcht. ByHt- n L a 8 9 witch Ci snnsi 3 or 4 selection iwuc h Operate on 12 vac Hook-up digram included CAT* AVMOD WERE Si0 00 REDUCED TO S5 00 EACH EtflSfl JXM1B2I& W nrtteren Measures equate H i aeep 21 Cin. l OOrom

Hr Nominated For Prize

HR magazine set a new record in my mind when they reported in their February issue that I was back running 73 magazine They quoteo correctly that I view amateur radio as a dying hobby and quoted incorrectly that I've ever said I no longer had any serious interest in it. You won't find anyone anywhere whoTs ever heard me say that even on a bad day. So. with HR reaching a new high only 50 percent wrong l think they should be given positive encouragement to shake their old Half Right nickname,...

Vdc Regulated Power Supply

y s A T ew are & < X3 nets fi r rogutateo 13 6 vtic V Jf ' fit f JI M* lupc t Botri tf 41U 100-, sohd i-att rjs protection, and LEO powei __ ' * i tnOtHCC U L ) 3> Y aampconfl nT,4ampjk j'Be sis 00*ech AAA StZE 1 25v a OmA-iSl 85 AA SIZE ) S Ott AH Si 35 AA rth loader ob 2. Q

Rtty

OK 1VXO-OK1VVM have put into practice RTTY by using the micro computer ZX-81. The circuit of the contact between the computer, reception converter and generator AFSK is fit with the Circuit MH8 1012, MH3205, MH74GQ, NE555 The program was worked out by jErko OK1VXO From OK1JT received further information on his experiment with the ZX-81 He uses the teletypewriter RFT only for the recording of the received relations. He assures the transmission by means of the micro computer and the program. For...

Swan

R(tiei jgEJ. . - , PSOF S tSp*' 1& O ZA Amp j2-572B Si 5T9 PTaaO GirtCcv Xml SP960 Spkr AJdit) F.fr FT9 O Am F iff sr. Gen Gen FT107M OMS P 107E PS FT757GX Gen Ccv Xcvf FTiOlZD DN, Fan FT 101 ZD AM Ware Andt FTlOiZ CW, Fan FV1012 Remote VFO FT101 . CW GT1 1E, Fan FT101 , Fan FT 7 20W Xcvr FL-lQ AMP FT221 2M Aft Mode FT 221 W Preamp FP-757 H.D, FRG TTWMemorv 715 00 39 95 549 459 95 439 35 39.95

Load

L uaTCh ClOAO fORU A NESON4HT L, C CrRCUlT If a capacitor, inductor and resistor are combined to create a resonant circuit at the frequency where the reactance of the capacitor is equal to the reactance of the inductor (resonant frequency), the circuit will look to the generator as though this were only a resistive load. The current flowing in the capacitor would be cancelled by the current in the inductor and the only current flowing through the Rgen would be resistive current. The circuitof...

Enhanced Hfm Modem Option

The standard PK-64 will operate all modes with a phase-locMoop (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-100 Computer 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...

Dot

R Dt PA* i hi & pt I 4t) on Cl m 01 ACF i ttr i tt4i fqf -1 to 3 D't -itjt m 'iept 11 QIA-*D< I DIC 0> *> 0 A*DUI 13 INPUT ENTER DASH*, 'PQ1' OF * SPACE * * t rtl r OlJlT1 to I ft* it-- i- it f 1 jit- * - fifis1 am iii 'dc' thek to 14 FE*, l-i it) Cr IWICr * i if ik* off*' tmen j f.i h + l- -t I7f L 'BUT' -HE L i t iBd F *t*H P*- iw u4 J. if- MHC tii CI uai iNv ni - OR hi'HJijin ju uhj*L'j uu UM . -im ir i inv'lj-o- ij nwcdi 111 4 in - inu s invm-s.' i l h. ct * 7 IP 'H'l * I. 1 THEN t...

Gain

H Li 'l 1 TtlBN . . .1 ft CARPER tUBftG 2 I in 01 METER SPACEO TO L E NGTH Of A INCHES Motes (1) S 0,25. L1-L2 - open wire line, 4 copper spaced, 4 ' L1 must be exactly same length as L2. (2) L3-L4 RG-213 U or RG-8 U coaxial lines. May be any length but must be exactly the same length, (3) L5 RG-213 U or RG-8 LL L 162.36 f where f frequency and L leet. For 21.3 MHz, length of RG-8 U or RG-213 U 7 feeth 7Va inches. (4) Unidirectional pattern may be switched in either of two directions along apex...

Sca

Power Supply, etc Autopatch Reverse Patch, VW0 & 1 inhibit Dial Pufse Converter Aulodialer Phone line & ''over iha airp> command modes. Virtually all functions may be turned on off remotely. Touch Tone Control Of Timeout Hang Time1, Patch Timeout, TX Inhibit Reset, Patch & Reverse Patch Inhibit, Reset, P.L. ON OFF (w optional P.L board), etc. I Up to 6 Auxiliary Functions. More with TTC30a Fuji 16 Digit Decoding with Crystal Controlled Decoder IC Touch...

Infu T

Total count 3s eight, and two counts are used for a space, the six remaining counts are reserved for the dash with a ratio ot two to six (one to three), The dot generator is a simplification of the dash generator, requiring only the outputs QA and QB to generate he dots. As long as the paddle is held in the dot position. U3 pin 3 wilj be forced high, resulting in a low on pin 12 of U3 If the dash generator has completed its cycle, pin 11 of U3 w ill also be low I he resultant high on pin 13 ol...

Astron Power Supplies

' HEAVY DUTY HIGH QUALJTY * RUGGED RELIABLE * SOLID STATE ELECTRONICALLY REGULATED * FOLD-BACK CURREM LIMITING Protects Power Suppty fTum excessive current & continuous snored output. * CROWBAR OVER VOLTAGE PROTECTION on all Models except RS-4A. * MAINTAIN REGULATION LOW RIPPLE at low line input Voltage * HEAVY DUTY HEAT SINK * CHASSIS MOUNT FUSE * ONE YEAR WARRANTY MADE IN U.S.A

Liberia

EL2A UW86HFY Box 716 Ninety three and a half inches of rain in five weeks That was the recorded rainfall in Monrovia that was reported on The West African Net early last September, Until then it had been a very dryt wet season The accumulation was running more than 20 inches below the lowest records of the past four years The antennas were welt washed but communication was bad. Even 40 meters (which is our''workhorse band for calling up and down Liberia) sometimes...

Kwf

Fl KL i THEN IjOHUH I LSt 60GLJB 1300 PUT 220,1 GDSUL1 J030 OPIN I' P-A5C< fl*1 P P qhlt) I27 L P IF P > 3 TH N I770 if n l then p* g gdsub i5 0 p 2 gqsub MJSUB 153C p- IU SOSUti 1. .KIJ PRINTlGDTD pf lfjl A* IF TL tKN GOSUb 1 uju goto BOO I 0SU& I 530 tm JNI j pftitfT PP MI CLOSE frfJTB 1216 INT REH nm *t*ft RY l*U ir ftSL 111 Lit Z20,l fiOSLCt- 3030 f FL-J I> ih 1 720 F IP 1 1 TD 25 i 47 Pi l T 0 t* Pp i & OGuB p tf5 PfllNT MMlPl 1 GQBUtl Mt 1 iGOTO l< O FOR 1 1 TO L'fllEiPRUVT...

Ic

IC5 operates as an integrator due to high resis tances in the adding circuit, I constructed it with the use of an FE amplifier with high input resistance. IC 6 functions as a low pass filter it has to detect and signal through the diode LED the state of desynchro-ni ation of the frequency-locked loop Transistors Q2 and Q3 serve to neutralize the integrator when the vco is desynchronized and re store the state of synchronization of the loop. Desynchroni ation often takes place when changing the...

Nemal Electronics

12240 NE um A ve.hDep S r M,aniir FL 33161 Telephone (305 393-3924 15,00 34.00 155.00 140.00 80.00 80.00 scure the bottom portion of the trim Even if the corner is bare, the opening js still not noticeable since it's located well below the normal line of sight. A variation of this approach can be used if you wish to mount the Hidden Hypo on a flat wall Herer you'll have to use one piece of panel trim. (This trim may go under a number of names check Fig i for its profile, it's technically called...

Attention C Owners

LOOKING FOR HAM SOFTWARE FOR YOUR C 128 IN THE C 128 MODE HAVE NO FEAR CAUMTRONICS IS HERE AVAILABLE APRIL 25 S E YOU IN DAYTON COO orb i 319 74b-0360Of 219 405 371 s CftLM* fftOH*C S is < x* fcvptp our Q+mm Just because I started this column as a result of visiting DX hams is no reason you shouldn't put in your 2c worth and tet me know what DX news you find most interesting, My inclination is to have DX ops tett us what they think is interesting how we can get permission to operate if we're...

Wwd

The final amplifier of the transceiver and Roti is the equivalent resistance of the same circuit. If you went into your final amplifier you would not find this as an actual resistor, but the circuitry which is there can look as though it were exactly a single resistance I ookmg at the kilowatt input, the Rm is not an actual resistor eit ierr but all the circuitry attached to the input looks like this single resistor it all you can do is measure it at the input terminal. Another place where this...

Mooreland Ok

The Great Plains ARC fifth annual Northwest Oklahoma Eyeball & Swapmeet will be held in Mooreland OK on Sunday, April 13, starting at 9 am S2 admission at the door. Covered-dish dinner at noon. Local airport. Dealer and swap tables available at no charge. Talk-in on 147.72 .12, 146.13 .73 and 146,52 simplex, VE test given on Saturday, April 12. Campsites available. Direc* tions North on Main or Elm streets, across the tracks and west. For further information, call (405)-994-5394 or contact...

Help

I think I can generate around five million hams in China maybe ten. The Chinese seemed enthusiastic about my plan maybe you will be too. You'll be reading about this in 73. I'm going to make 73 fun to read, I'm looking for feedback from you on many things. I want to run a monthly listing of every piece of ham gear, along with your vote on how good it is. You'll have a chance to support manufacturers who produce something you think is great. Or gel in your two cents when you're...

Pna Ns

Lofk Prirt* (pflfKU fypai UtCk i.pantll iy(M C+nt .20) Pir iC CMOS 40VB.40UB. +Q50B. 40513 MCflaaiDTb . 10 100 OluMQOV Mylar cat IA J.I . 3W1QC 27128EP9DM 4 95 150ns Prime- HitatfLi tkteaJ Fa Mic Upgrades t kpinsiori ProjectsJ 4 5 S243 I I O Evader C' W Specs 2.95 UDN til 1H Ithsptay UiiWf tO per.35 jHiimiouipnitK to t oo

Mfj

Price slashed 50 to 169.95 Get a tun feature Super Keyboard that sends CW RTTY ASCH tor the price of a good memory keyer You gal thfl convenience of t dedicated keyboard no program to load no interface to connect iust turn rt on and it's ready to use. Thh 5 mode Super Keyboard tets you send CW. Baudot ASCII use it as a memory keyer and for Morse Code practice You get text buffer, program mabJe aid automatic message memories, error deletion. buffer preload. Duffer hold. TRIPLE OUTPUT LAB POWER...

Crystal

THEY LAUGHED WHEN I SAT DOWN TO BUILD , How would you like to gel involved with building some interesting ham projects Even if you've never pointed to 0 soldering iron in anger good grief, there I go dating myself again. Soldering iron, forsooth Okay, okay, soldenng pencil. While it isn't prudent to tackle building your own synthesized sideband transceiver these days, it's about the only way you're going to get many small gadgets that will be fun to have around your shack. And f have a sneaky...

Norfolk Island

We knew we were playing for time back in 1976 when the powers that be decided to install an FM transmitter in the Norfolk island broadcasting station. You won't need AM 1 they said. This is a big step forward, keeping up with modern technology ' it was maintained. Naturally, the people who made ah the decisions (and still do) know tittle or nothing about SWL eager beavers and other interested persons straining to hear the elusive signals from VL2NL Some time during the second half of November,...

Ufi

USWAX.25 is the AMRAD approved digital format STANDARD used on amateur packet radio networks. System Tested 4.5 x 6 board complete with alt fC s and programmed EPROMs personalized for each purchaser Requires only single 8 10 volt V* amp power. 1 year guarantee of hardware software AX 25 standard RS232 serial ASCII at any user baud rataRS232 HDLC for 202 modem used for AFSK or direct to RF equipment for FSK.

Mennv

KPC--2 Kantronies AX.25 Version 2 TNC features a built-in HF modem, full duplex operation, multiple connects, and over 100 software commands A serial RS-232 or TTL (C-64 VIC-20) port gives universal compatibility. The enhanced generic command structure fits any computer, even PC compatibles. All this combines to make KPC-2 the only TNC you'll ever need. Suggested retail 219.00. SMART means an internal microprocessor is used to improve performance and add versatility. 1 he Smart' Kantronies TU s...

Other Quality Cables

RG8X 95 Shield (mini 8) RG213 U Mil Spec 96 Shield RG2U U Mil Spec Silver 8G142B U Teflon - Silver RG217 U 5 8'' 50Ohm Dbl ShSO. RG223 U Mil Spec. Sliver ROTOR CABLE - 8 COND. 2 l8Ga.,6-22Ga, 2-16 Ga.n 6-20 Ga Heavy Duty HARDLINE - 1 T Smooth Afum w black jacket CorruG d, CoppSf (EO. Hehax LDFl 159.00 CONNECTORS - MADE IN U.S.A. Type N for Beiden 9913 Standard Plug tor RG6. 213 Amphenol PL259 PL2S9 Teflon Silver Type N for RG& , 213,214 Adapter for RG58 Call or mite tor complete Price List...

Beaverton Or

The 6th annual SEA-PAC Convention (formerly Oregon State) will be held from 5 pm Friday, June 6t to about 2 pm, Sunday, June 8 (open for setups at 10 am Friday), at the Seaside Convention Center, Seaside. OR Booth space is 8 ft. x 10 ft., with table, chairs, power, and soon for 120 24-hour securtty is provided For motef information, call (800M52-6740 (from Oregon only) or (503)-738-6391 for other information, write OTVARC, PO Box 5132, Beaverton OR 97006 or call , evenings only, (503)-640-5456...

L

Paris p acemem, component side. Hole sizes 69 drill bit except as otherwise nofed regulator (3 holes . bJ LI, 12, L3 (9 holes) 57 regulator and spacers (5 holes) 27 emitter leads ol Q3 (2 holes) 65-locate centers with 80 base of Q4, 8 ground-pac corners, ground side of C2f and 4 ends of thin bias feed stubs (14 holes) 73. C1> 47 pF chip C2 18 pF chip C4 0.01-uF ceramic C7 2 pF mica C8, C9 18-pF mica. is adjusted as explained in text( 2.7k is the initial value to start from, * 2-turn...

Catalog

Frequency Sfliartmty rE I activity A C Range Audio pu I 3.8-4 0 M H 0.5 jjV lor 10 dB SVN - G m fa 4 KM + BO dB rn + 3 r G out > 350 mW m> 8 ohms 15 J a MHz 30 nie 5 Ofirn-i IMD -30 dB Harmonics 2 1 -4 db 3ld -55 c SVjfl Immunity 30-1 u i I phase mules alC Amplified, tasl response rate quasi-processing) Voltage 20 Vdc regulated Cunebt 2A Irans mil. 65 rtiA receive RADIO KIT BOX 41 is Grmvilie. HH 03046 (603) 76-1033 > -33 Iftlex & 7697 RADIO KIT BOX 41 is Grmvilie. HH 03046 (603)...

The First Name In Electronic Test Gear

Save s30 an the RAMSEY 20MHz Dual Trace Oscilloscope Uii v.ii passed 1 piiiJiry at rin UftbeHtable pncc ihi Ramsey oscjllcscopr conv par> s others coaling hundreds more Features nclvdc a component testing circtiil tor capacitor tftg-ta) circuit anil diode testing TV v deo sync trtter * wkte bandwidth & high sensitivity internal gratmute * front panel trace rotator Z axis h giL- senS& vrty -> m ude * rt j ned fw supp i uj -n canton- rock soi'd triggering OR f.ign iju ltty h & k on...

Custom Communication Consoles

Personal, Commercial, Industrial & Governmental Applications Any shape & size to fil a corner or a room. Special design features & services are * Replaceable front panel, for equipment changes, * Precisely cut front panel holes by computerized equipment. * Computer aided design for Floor pfan lay-out, & console design. Design assistance, on-site analysis fit installation are available. Constructed from plastic laminated birch plywood & black anodized naVtOH. aluminum extrusions....

Transmit Converters

Wriy pay Dig bucks for a mufti modeng Tor each band Can be llnkud with receiveconvert-fori r.iwttwve. 2 Wails out put vhf. 1 Watluh . Send 1 for Complete Catalog (Send S2.00or4 IRC'S for overseas mailing) Order by phone or mail Add 3 S & H per order (Electronic answering service evenings & weekends) Use VISA, MASTERCARD, Check, or UPS COD. 65 D MOUL ROAD HILTON NY 14468 Phon t 716-392-9430 Hamffortics' is a resistUad msth

Vhf Models

Tu 113 S-3C (44-140 26-30 28-30 2r-2 4 0-30 SO- 54 28-30 144 145 144- 145 50-54 No Need to Pay 80 to 125 ior a GaAs FET Preamp, No Need to Pay 80 to 125 ior a GaAs FET Preamp, Very Low Nose 0 7dBVHR0 8dB UHF High Gain 13 to 20dS, Depending on Freq Wide Dynamic Range lor Overload Resistance Latest Dual-gate GaAsFET. Very Stable

Csg

Heavy Duty switch for true 1 Kw POWER - 2 Kw p.E.p. Single Pole. 3 Position. Desk or wall mount All unused positions grounded . . -b-f 9T noetora 36.50' 2 Pote, 2 Position, bypasses, linear*, reftectometers. antenna tuners etc Single Potet 5 Position, all unused positions grounded S 6G UHf contra* 32,00* - BNC CCOnectare 46.50 * * Shipping and handling tor any item add S2 each

Il

PIN RT ANGL HEADER C NC7R itO MRF90l4HtotK Cirade-& O Gac a 10 1 CJO tc Ass'i (HotMjy Gr fte. Some M rkedh3Q 5 r - tow Powftf ISO CHIOS TKhrwlogr Short Propagation D*lay > Improvad Noli* Margin* High Currant. 5 ink'So Lire Cfepabllhy 45C137 I > f H Invenetl Decoder i aich u MSCt3B-i Olfl inverted Decoder 74SC139 I Ol 4 Inverted DrtCOde' 4 C237 t O1 B Non (n rrli d Lalchtfd 4SC23S l C*t Won invert i c 74SC239 i Oi 4 Non inverted .-4SC240-& Tai Dnw In OtiaJ Buffer LioeDnvef-fJ 1SC24*...

Wall Transformers

Compact, wel-feguand wttfwig pow r fc pty de . dtooCw Vmi iri Tfymfrfiticomyulw j OUTPUT - 12 ydc 350 ma 1 + 5 vdc l 2 amp - 5 Vdc 2 0 m 51Z p ,fvii nigt J5 00 each USED Ehir fully rented SL70aacti Spti. I y cotl voMage desired Either 4 vdc or 120 vac LARGE QUANTITIES AVAILABLE A plugfrntcT * i -to i O -, jc outlet

Racketeering

I have seen the future and it is digital. After several months of abject poverty, brought about primarily by the purchase of a home satellite TV system, i finally decided to take the plunge and invest in a packet radio terminal node controller (TNC . The result has been the most fun I've had in amateur radio since I gave the local repeater coordinator a hotfoot at the 1978 LfMARC hamfest and flea market. Packet radio, fellow hams, is going to save our hobby. Don't let anyone else tell you...

Oxcc Standings

The best stations in Czechoslovakia to March 10, 1965 (first figure, DXCC land confirmed, second, Old DXCC) Mix (CW + Phone) OK3MM 31 5 355T OK1 ADM 3 1 5 346t and OK 1 MP 314 345 C W OK3JW 296 302, OK1TA 295 301, and OK3EY 295 299 Phone OK1ADM 314 340. OK1 MP 313 339. and OK1TA 310 325, The champion of Czechoslovakia of collective stations on UHF for the year 1984, in which the results of the biggest European races on UHF are being included, became the radio club OK1KRG from Prague with 131...

Oc Only

This publication is available in microform receded my moneys wvorrft w A usf one iss u*. stop to tead CTM. even though most other magannes t receive fand ivnre fori onfy get cursory piarfundfiort,,, Foreign S35-0DiUiid) S5S00(air) PermanenHU S Subscriptiorif S100.00 17QJ Sar Drive Bifm'nghafri Al 353 5

Fme

Notes Step 1 Make longitudinal time correction first (see text) Step 2 From selected date, determine number of minutes seasonal time correction required (see text) Step 3 Add or subtract seasonal time correction (minutes in right-hand column) to or from longitudinal time correction Step A Add total to local legal or official time (EST, CST MST, or PST). Table 3. Seasons time-correaion chan. end), the ratio of 0.5D to the leg length, L* equals the sine of the tilt angle, T. As shown in 1 able 1,...

To Xmtr

POP itJ OH > 10 METER OPERATION, INSERT 'B'-U lV E lEG Ab 5 V T R LOMG WIRE FOR KM-DIRECTIONAL AkTENNA EACH Of fOU* LOSES WAS ABOUT 2 43 SAlN ALSO CERATES ON 20 0 AO ME'iflS US ti-j 10AO*MG f.Vi. 'B'-U lV E lEG Ab 5 V T R LOMG WIRE FOR KM-DIRECTIONAL AkTENNA EACH Of fOU* LOSES WAS ABOUT 2 43 SAlN ALSO CERATES ON 20 0 AO ME'iflS US ti-j 10AO*MG f.Vi. exact ) solar noon, and the shadow of a vertically suspended line will be in the exact north and south position. To correct your standard time...

Acc Software Update

Advanced Computer Controls has released software for its RC-850 Repeater Controller. Version 3.4 supports multiple telephone tines (including up to ihree lines linked by radio), expands autodial storage to 250 telephone numbers, adds slots for 35-digil dialing sequences,, and offers several modes of paging, such as five-tone sequential, DTMF, CTCSSr and HSC. Analog measurements performed by the controller have been enhanced to include stored low and high vaf-ues on each channel, tagged with the...

Impedance

Ter see no reflected power The 50-0hm coax going to the antenna must see an impedance at the output of the matchbox which matches the 100-Ohm resistance in parallel with the 50-0hm capacitance appearing at its input. This will give our desired maximum power transfer mto the antenna transmission line. An L network will provide the conditions to match both transmission lines effectively. If we could measure the impedance looking intoport A(usingan antrnna noise bridge would work) we would be able...

Accessories

Run up to 1200 baud digital or packet radio signals through any FM transmitter DE 202 FSK DATA DEMODULATOR COft-2 KIT With audio mixer, local speaker amplifier ta< t A time-out timers. COR-3 KIT with courtesy beep DTMF DECODERJCONTROLLER KITS AUTOPATCH KITS. Provide repeater autopatch, reverse patch, phone line remote controt of repeater, secondary control CWID KITS * SIMPLEX AUTOPATCH

Print

H F-L 1 M P- EL F P lOlBOSUB liS(P IP INF i 732 J 1 C THEN 17)0 OUTO hrtM m k TITE BUFFtP TO DIS* RiJtiT INPUT Give thw U If 4* H4*V jnd EXT iN* T iZO PRINI fl t tCHH+ iPAtNl C HK* ( ' 2W n h vi Z SSO C50U1 .'-(X) fj C'J n JLri PR 1 Nt 'At yl 1 ' 0U1 500 7570 REM BUFFER STflTUS MESgflRE IF rt 3B2W IMIN 07Q ELBL I'MNI C 1 H1 i J LLilHil BO 759Ct I - h F1 7iOO IF 1 t> TI II U RF TUF N PfilNl ffflMT tH L PR I HI E.Mhif> I'D M Z6AO PR 1 NT f F-R M I liprp PRlFtfT 670 PftlHT Ft* I 7630 RE.TUKM...

Kantronies SMARTS

Presenting three intelligent, versatile, compatible terminal units. For more information contact your local Kantronies dealer or write 1202 E 23rd Street < 913) 842-7745 Lawrence, Kansas 66046 U ' U The Universal Terminal unit (UTU) is the original Smart amateur TU. CW, RTTY, ASCII, and AMTOR can all be worked with this single unit. Switched capacitance filters and LED display tuning make using the UTU easy for even the Novice. 12 Vdc 300mv power supply required. Suggested retail 199.95....

Flex

Significantly advances antenna shock absorption technology. - Eliminates RF noise in duplex radio systems from metal-to-metal contact in conventionaF steel springs. Drastically cuts whip vibration which can damage or break antennas with steel springs on high-vibration vehicles. - Solid brass adaptors molded into neoprene braid totally isolated through center cavity. Field-proven against heat, cold, humidity and abrasion extremes. * Models for roof, trunk or magnetic mounting, 2 meter, 220 MHz...

Ho

The predicted radiation pattern for the CLA. hook up the equipment and go although admittedly frustrating to those who feel obliged to tinker with their amateur radio gear. Since there are no moving parts, there's really nothing that can fail. 1 never have to worry about my rotor dying with the antenna pointed south just a_s JVI comes on the air. (Of course, I probably won't even hear him anyway, so I won't suffer by knowing what I'm missing.) The system has the additional advantage of...

Fmtf

Repeater offset switch. v Ky I a reverse, simplex, ' jOuLi fl Standard accessories HjpM H Quick change, locking battery case The rechargeable battery case snaps securely into place. Optional battery cases and adapters are available, Rugged, high impact molded case. The high impact case is scuff resistant, to retain its attractive styling even mih hard use. See your authorized Kenwood dealer and tak* home a pocketful of performance today1 Kenwood's advanced technology brings you a new standard...

New Developments

There are a lot of new developments in amateur radio that I've got to get you interested in like packet radio, repeater cross-banding, and so on. Many of you may be trapped in the past, spending your declining years talking with the same crowd every nighL I'm going to try and get you to try somethi ng new and excit ing. The one topic that came up the most at Miami was the need for youngsters in the hobby I've been griping about that lor how many years now As usual, sigh, I guess I was ahead of...

Te Systems

Box 25845 Los Angeles, CA 90025 (213) 478-0591 -*1 true noon will occur at W6TYH on June 26 of any year at 12 06 pm PST, Note that all local times are standard and not day light-saving time. Now that the preliminaries have been taken care of and you have determined the exact time of true solar noon at your antenna site, you can use this information to lay out a true north and south reference line through your antenna site from there you will be able to determine accurately great-circle...

Jt

Receded my moneys wvorrft w A usf one iss u*. MAKE CIRCUIT BOARDS THE NEW, EASY WAY * Copy circuit pattern on TEC-200 film using any plain paper copier * iron film on to copper clad board convenient x 11 siie With Complete instruct Ions A TISFA CTlOri GUARANTEED 5 Sheets for S3,95 10 Sheets only 5.95 add St 00 postage MY Res dd safes M* Dept. F, P.O. Box497 Northpon, Mew York J1766 55

Apr

The Dayton Amateur Radio Association, Inc,, will sponsor the Dayton Hamvention on April 2527. 1986. at the Hara Arena and Exhibition Center Dayton OH Admission, vafid for all three days, is 8.00 in advance, 10,00 at the door. Banquet tickets 14.00 in advance, 16.00 at the door if available. Ladies luncheon, 6.75, Advance saie deadlines April 5 (Canada) and April 12 (USA). Roy Neal K6DUE will be the banquei speaker. Giant Flea Market noon Friday through Sunday. All spaces sold out. Technical...

Alcoa

The mrw SATMAM Buyer's Guide iii a ntctsttij few ,iny prettpcctm nr cuncnt rjrth ttaiicm **wncf v. ho * jni 10 uvc hip mobry n rumc brand satellite product and rn vonti ttrj money. But direct, Do-h VoarvJf, and uvt with SATMAN ioffl tree Ordering, no SJki tax (IL onh )> major cnedii rds actepicd, huge in-siock mvcnionc available, and t PS shipping anywhere in U,S- < IWCfc with SATMAN before you buy M> n-ift nor be undttjo df I alt nam for your irw 24 pu tr SATMAN Buyer's Guide.

Am

73 for Radio Amateurs April, 1986 107 Heath Company Ad No. AM-448T Page Vertical, 2 C (Standard 4A Red) Astronauts were Rein hard Fur-rer 0D6CF, Ernst Messerschmidt DG2KM , and Wubbo Ockels PE1LFO, Here are some of Mes-serschmidfs comments. Regarding his amateur-radio activity in space. Ernst said think) made only a quarter hundred QSOs because of the immense program of worfc we had to do. The transceiver was just Sitting there and I had a chance to hit the button when only I passed by....

Callbooks

The Flying Horse has a great new look it's the biggest change in Callbook history Now there are 3 new CaHbooks for 1986, 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. possessions). The Catlbook Supplement is...

Ibb

AT LAST A VERY AFFOftDA LE C MP> UTtfl ' > AT A VERY AFFORDABLE PRl ftJWEPFUl UtL* PROGRAMMABLE ITH h Of Wf.W' .4* i POHTA BLf iWfl . 1 VH I NO MODULE SINGLE E THY WM HANDS PU 1MB LE KEY MEUflfiJiKF TYP KEYBOARD BASED FOUfl Cmp EbiGM- UG*TK hi + nnIQU SYNtO-CHEC* flEPonr CO -. f QR FPHOR IDENTITY-GRAPH ftFIAWINii AND AH--M*-TF 0 PttJ. PLAV-A(XaJRATE TO 9-1Q DECIMAL PLACES FOR PULL tUNQE MATH AH SlJt H Mi IC FUNCTIONS - Al AN AFFORDABLE F WE CANNOT tell tou THE MAKt Of THE COMPUTE BU it M*DF...

All You Need In One

full COLOH, sound, h live action ruSl ike t oadr TV Get on r s Rioting amateur moeo (nock- a oui aiiordatste feaoy to go -ice WHAT IS AEOUlRED FOR A COMPL TE OPERATING SVSTEM* The Q7Q 15 down conter ouipuis (o any TV on ch 3 lor receiving Conned a good 70 tm antenna and low loss coa* Plug in any composite video source you wani 10 ifanaiTilr Camera*. VCR computer etc Plug fn y low t dynamic mir or use color camera mic for Standard 4.5 mHj TV sound Corintcl to 13 S v< io for base mobile or...

NEW

A hita y duty snd 'iCCur.iie SCopi -Oi Sennce as wt- . ai r > duclp ii use Features incJtldc wide Irequency bandwidth optimal Sern sitivity iiifemti, rjr H-h disp * d-r ayed iriggefirtii sw& ep hold Oft -O Single sw ep + TV syn * 5X rr gi. ficalton XY or x Z operat im * HF LF noisi r duction

First Five Mode Data Controller

The Pakratt model PK-64 by AEA is the world's first computer interface that offers Morse, Baudot, ASCII, AMTOR and Packet ail in one box (hardware and software included) at a price many competitors charge for Packet alone (from Amateur net). Do not let the low price fool you coming from any other company but AEA it WOL _D be too good to be true The PK-64 works with virtually any voice transceiver. The Pakratt is the easiest of any to hook up and have operating in just a few minutes. In Packet...

Ontests

Robert W, Baker WB2GFF 15 Windsor Or AtCO NJ 08004 CONNECTICUT GSO PARTY Starts 2300 UTC April 5 Ends 1900 UTC April 6 Sponsored by the Candlewood ARAh there is a required rest period from 0500 to 1300 on April 6th, Phone and CW are to be considered the same contest. RS(T), OSO number, ARRL section or CT county. Phone 3.927, 7.250. 14.296, 21.370, 26.540, Novice 3.725, 7.125, 21,125, 28.125. Club station W10I counts 5 points. Novice QSOs count 2 points. OSCAR QSOs count 3 points, others 1 pomt...

Twee

TPEE MOVEMENT DURING tflNOSTOF-M CAUSES PAIL TO IDE UP ftMlJ DOwr* PAE VEHT. IHG OtMitiE TO AfiRAY TAP5 ADJUSTED AlaOUT l A UFN5 EACH SHJE Of L.I CENTER PCtNT DHM LINE PG- I-UJ TO TRANSMITTER i fcr I Fig . W6TYH vee beam for 5 meters. The interconnecting open-wire I me is referred to as a phasing line. To ensure that the two sections of the array, upper and lower, are driven in phase and receive equal-ampli-rude rt currents, the feedpoint for the system should be located at the center of the...

Design Evolution

Linear (all mode) RF power amp with automatic 77R switching (adjustable delays Amplifier useable with drive powers as qv, as Vi wati Linear (all mode) RF power amp with automatic 77R switching (adjustable delays Amplifier useable with drive powers as qv, as Vi wati Receive preamp option, featuring GaAs FETS lowest noise figure, better IMDj Device NF typically 5 dB. Thermal shutdown protection incorporated Remote control capability built-in Rugged components and conduction provide for superior...

Ever Say Die

Some just make a noise others call the police by telephone, others use radio Now if you reaNy want to get into it in a very big way. how about putting together some alarm kits and selling them by maii order II saw plenty of car alarms at the Consumer Electronic Show in Las Vegas m January, but little in home alarm kits, if i wasn't busy with a lot of other things i d do it myself. Just what I need-one more business, fd tell you about all the businesses I'm in now, but you wouldn't believe me....

Yaesus big gun The FT

DX and contest operation ts no place for a lightweight. That's why the FT-980 combines the latest in HF technology to give you the muscle to get you through. To begin with, its front panel gives you unsurpassed operating flexibility Store your favorite frequencies and operating mode independently in each of the 12 memory channels, Review the contents of any memory location without disturbing the QSO in progress with the checking function. Qutckly go from one programmed channel to another or...

Tty Loop

WA3AJR 6 Jenny Lane Pikesvifte MD 21208 I don't do this often, but in the spirit of ihis month's holiday, I hope you'll bear with me. In the beginning, the Teletype Corp. created the Model 12, and it was good. Next came the Model 14, and ii was good. Then came the Model 15, and it, also, was good. Soon thereafter came the Model 19, and it was very good. And then came the Model 28, and rt was very good, indeed But then came the Model 33r and it was the best yet. Ouch Well,...

Multiband Slopers

K f trt.Si-i-j Dl . r,li, AL 1 MiytK SWfl-Coii IDI4'D-Cw ' - r ULLT AiSfe W 3LE& to TOW timfflii t Iflw ImwncTwehbrt fin > itiT TT - V TT O m Qtufilt - CompHH Injtrmt ,Uri' Y ut u.o it U Ptod 4 BA MO SLOPE i L , 40L 30, Of 2 M U IL KMQ 4 MHt 1 Iho m AGM Ii - GO 4QM 4 ft - I 31 NO-rnAI1 IHrJ LE ' IG& . H0h 4 m* U.in lyrig i 1 3 - 0 1. 40M 0511. is il a nu spACt iAvrRDtPOi r ido umjioM 1 jw, h f *< tLH'ft widu -jr i, 4(fc U I ur> pr. il r*L> 5 E tftffiDWji tflJijii y ni n r ji iyMin...

Making Money

When you think about the enormous shortage of electronic technicians in the United States, you realize that there's lots of opportunities out there for anyone with entrepreneurial leanings to make money. It's so easy for any ham who is realiy interested to make money that I get a bit annoyed when I hear hams compiain ng about being short of money. It's out there in gobs. For instance, maybe 15 years ago I recommended that hams interested tn making a few extra bucks could do worse than get into...

Teletype Model Hookup

Common RS-232 levels of computer interface, all that is left to do is make the computer speak 110 baud of ASCII. The ASCN part should be easy it s the native language of most computers. As to the 110, it depends on the computer. We covered the CoCo in this column several months ago. Program 1 is a simple scheme to aHow the CoCo to output at 110 baud through the bit banger serial port on the rear apron Similar schemes should be just as easy for other computers. Even my old 6800 would slow down...

Next

It is usually necessary to prov ide some method of ensuring that the true i locked operation is simulated. This is accomplished in the above example by use of the INV(CK). Since CK is 1 every other alternation, Q will invert even other cycle, simulating a by-two frequency divider, in most cases, however, this is not sufficient, as often some form of gate is used to interrupt the clock signal. The result of this on the above routine will be a continual flipping of Q if CK is gated to a...

Y

Ceramic crystal socket for HC6 U Crystals (mount off ground) Charles Bryaiu. GW3SB G3SB 2 Pcnrhytit Saint Michaet s Rood Mint-head, Somerset TA24 SJP England This, the simplest of all antennas, has much to recommend it. II you've worked a number of Eastern European stations, you've probably been told by some of them that they were using a GP fgeneral purpose) antenna. As their signal is often adequate despite quite nn> dest power, you may well ask what is the secret. A GP antenna is just a...

Australia

Jim Joyce VK3YJ 44 Wren Street Altona, 3018 Australia Jaws, or The Great White Pointer Shark, has a reputation in most parts of the world for being a large fish, but in VK5, around Port Lincoln, world fishing records involving sharks have been broken time after time. There have been skeletal remains of the Great White Shark in this area recorded as being up to 60 feet long, and some fishermen swear that they are stiil around ai near this length. There is, nearly every year, some sort of White...

Ail Our Products Made In

Guairty Communication Products Since 1932 At axi' Dt& ftibuTorc wnte or caii 10 Canal Stneet. Bntoi PA 1< X 7 MH Next, after the board is completed (with Rfj preset and mounted in the case with the connectors soldered, tune-up consists of adjusting R as already explained, adjusting the local-oscillator frequency with its trimmer capacitor (with the power supply set at mtdrange), and then peaking the three slug-tuned output-amplifier inductors, which provides a 6-MHz overall bandpass...

Icom

ICOM America. inc., 23QQ- l th Ave NE, BeJfevue. WA 98004 3331 Towervwod Drive, Suite 307, Dai lay Tx 75234 - I -.MV- sp tf Jt n& an appronma *- vm - to dtangp mo cl t r ch o& ftg on 11 ICOM facVre < .r ' .mty FC vHjfflr- krtwi g notr, rmnvor* 7354 5 Toll free including Alaska & Hawaii Phone Hrs 9 30 a m lo 5 30 p.m. Pacific Time California and Arizona customers cat or visil nearest store California and Arizona residents please add sales lax Prices specifications, ftescripnons...

Germantown Md

In celebration of the 40th anniversary of Montgomery College, Montgomery County MD, the Germs ntown Campus Amateur Radio Club will operate KV3S on Sunday, July 27, 1986. from 1300Z to 2000Z. Frequencies 7,240 and 14.240 (approximate). A certificate will be awarded to alt. Special certificates will be awarded to those whose birth year is 1946 and to those who work KV3S on send QSL and large SASE to KV3S. Montgomery Coilege, Ger-mantown MD 20874. The 38th annual Upper Peninsula Hamfest, sponsored...

Code Practice On The

PC Full featured, menu driven, many options. 20. Write for fact sheet. Eric Lundstron, PO Box 21654, Concord CA 94521, BNB430 KENWOOD TS-660 transceiver. Covers 6, 10. 12, 15 meters, AM, FM, SS8, CW at 10 watts With PS-20 power supply and memory back-up. Like new in original box. 395. Also Kenwood R- 000 digital .3 to 30 MHz receiver. Also like new in original box. 285. Mike Faulkner N9CRJ, RR V2 Box 294A. Yorktown IN 47396. BNB431 REPEATER FOR SALE. Spectrum model SCR-1000 2-meter. 21 2 years...

Prist

Pii mt *< 3> - set tost 250 print 290 VTAB 22 i PRIXT ENTER THE NUMBER OF YOUR C80tCE GET A A - VAL ( AS) TF A < 1 0 A > 5 THEN 165 295 HOME 300 IF A - 5 THEN BOKE END 310 IF 3 i THEN 920 120 IF A < J THEN 360 330 HOME PRINT PRINT 340 PRINT ENTER THE PITCH (100 IS NORMAL INPUT PS P VAL (P ) It p < 0 oh p > 255 then j30 isq poke o.pi goto i jbo p a - l then 500 0 home t print press > > > reset< < < to exit this mode-jflo poke 34 1 )90 - . 1010,102 PORE 1011,213 POKE...

Works With The Popular C Computer

Low-cost C 64 because of the special architecture features making it especially suited to Amateur Radio applications. The C-64 should not be viewed as a mainframe, but rather a very economical accessory to your data communications system. Many owners of expensive computers such as IBM, TANDY, APPLE, KAY PRO, ATARI, etc., are now buying the low cost C-64 and dedicating it to their operating position. They si mply cannot find software for their machine that even approaches the power and user...

Vvd

Over the past several years my Yaesu FT-101T. has been modified rather extensively This was due in part to an interest in improving the receiver section for contesting The other factor was an uncontrollable need for its owner always to have a hot solder ing iron in his hand In any event, the radio gradually improved to the point where it seemed to play as rt should from a competitive sense However, a new feature became desirable during the past year the ability to monitor the transmitter's...

Tgb

Gates Ub (two), and mverters U4 (output pin 1 U5 (output pin 11), and U6 (output pin 1). The dash circuit will toggle on power-up until QA, QB, and QC are all high. This will cause pins 11 and 12 of U6 to go low, driving pin 2 of U5 high, If the paddle is in the space or dot position, pin 1 will also be high. This will drive pin i of U5 low, which is inverted by inverter US, driving pin 8 of U6 high, blocking further clock pulses to AfN If pin 6 of U6 is low (more on that later), then moving...

Mike

A upe- hnihin'i > irnsnD- I'M w u 'PSS m im- h I1 Tr nsrni' i Iii' if i.'g fl, 11 I yards A lh i I - tK> rys< tiy nviiiii. T5 bf-t to ruif Tt+ H . t m Ciii- ill J my rM fu ndtast rr D nV-. I'lv 1yJ36 Cjf il ill e R -II 9 V T j-h IM L-'in adfkKl r rim i i t- litijj age i-xyua n lri M vntf .> js df p r h . iitir hTning jfi-.I BUi gLUBralicin 1 ftc 5m*-f l ' 'M rncl df Of pan finj r See muw come a - . ditfefent hghts flkcher with music One light each 'oi. high m i J i ft n g & a r>...

Uhftv Preamp

(A leal TCKj in Radio Electronics Mari h May articles. 19B2) Th s tnQxpvn& ve anlennf mduuied crfe-iTip cmh add mxt mart 2b dB of ga n to rour iois o' ct sfO> **J j Hi'apeai < vd( F5 'or ffu* hrg tjua t Jt.r ne'vdei afl parrs PC Q Cue PowSupp yendflaiirn 134 50 AssamNed veojo ' 157 50 tmi MICRO MART accepts Wsa MC and iHephone COD s Mimntim orckr 10 00 Shaping-U S ordtra 1700 Canada and he couitriei 50 IrndudK ins) Snipping rat adjusted wheri applicable NJ rrsijents- add 6 sates tax...