S

2317 Vance Jackson Kd San Antonio TX 78213 Mon-Prt-am-5.Wi pni SdH- St 'i CO am - 2-.< pm 2317 Vance Jackson Kd San Antonio TX 78213 Mon-Prt-am-5.Wi pni SdH- St 'i CO am - 2-.< pm NEW* * COUNTY' 64+ + NEW COUNTY M* * + COUNTY' 64 COME WITH THE POWERFUL LOGGING FEATURES OF CONTENDER PLUS IK without WAZ & DXCCI f PLUS A SPECIAL COUNTY LOGGING SYSTEM THIS SYSTEM TAKES THE WORK OUT OF COUNTY RECORD KEEPING. OTHER LOGGING SYSTEM AVAILABLE FROM CRUMTRONICS ARE CONTENDER PLUS II.Ion disk 34.95...

Spectrum Analyzer

TS-101 UPM84 Analyzer for 10 Whito 44 GHz in 8 bands 20 KHi resolution 3 db poims Dispersion 0 b-2b Mhz atoe 55 MHz 0-60 db IF atienuation In 6 db steps With 5ADP7 GfiT requires 115,230 VAC. 17,3x19.5x26, ISO lbs sh. Used-reparable 265 ACCESSORY KIT including filters, attenuators, and adapters wsei purchase 85 TRAWSIT CAS 15 MANUAL, partial repro S15 R-1420 UHF RECEIVER, 30-300 MHz AM-FM-CW In two bards selectable 20 or 300 KHi bandwidth Same as CEi 9 5A. 3.5x 19> lSt 25 lbs sh Used reparab e...

Ground At Transmitter

Details of the stacked V beam with broadside curtain (lazy H). Both arrays operate in phase. wing sections are each at an angle of 55 with respect to their adjacent legs and at 90 with respect to the V bisector line Since two half-wave (180 ) linear radiators operated in phase have a gain of about 2 8 dB over that of a dipole, we may add this gain to that of the V beam. Thus, the 4.5-dB gain of the V plus the 2.8 dB of the pair of half-wave radiators equals 7 3 dB. iust to be on the safe...

Little Brown Jug

The Delaware County (OH) Amateur Radio Association, Inc., will operate Little Brown Jug special-event station W3GLS on Saturday and Sunday, September 1819. 1985, from 9 00 am to 8 00 pm, from the Delaware County Fair. Frequencies are 3860, 7235, and 14,235 (plus or minus). To OSL, send an SASE to W8QLS, do Staff Si afford NJ8F, 5987 Dublin Road, Delaware OH 43015. The Personal Computer and Standard Computer Interfacing for Scientific Instrument Automation Workshop, sponsored by Virginia Tech,...

Feed Like

Configuration of a centerfedt balanced verth cal dipole. a good earth ground, and a vertical will not always have good low-angle radiation We all know the general radiation pattern of a half-wave dipole Maximum radiation occurs perpendicular to the wire, and the least radiation is in line with the wire assuming the antenna is straight. If a dipole is set up in an east-west direction, for example, the best radiation will occur in north-south directions (generally) and the least in the...

Gainesville Oa

Tie I2lh annual Lanierland ARC Ham-fest will be nerd on Sunday September 22, 1985 beginning at 9 00 am in tne Holiday Hair of the Holiday Inn, Gainesville GA There will be free tables and an inside display area tor dealers reservmg in advance There is a larg parking lot for the free flea market there will be many activities and a ladies country store Novice through Extra walk-In exams will begin at 9 00 am Talk-in on Ti6.07i.67, For information or reservations, contact Paul Walkins W4FDK, Roule...

Deluxe Versa Tuner Ii

Match everything from 1.B *30 MHz, coax, randoms, balanced lines, up to 3QQW output, solid state or tubes. Tunei out SWR on di-poles, vees, long wires, verticals, whips, beams, quads. Built-in 4 1 balun. 300WH 50-ohm dummy load. SWR meter and 2 range wattmeter (30GW and 30W) 6 position antenna twitch on front panel. 12 position air-wound inductor coax connectors, binding posts, black and beige case 1Q x 3 x Tin

MFJ

A deluxe MFJ Keyer in a compacrtbnfiguration that fits rigM on the Bencher iambic paddie' MFJ Keyer small m size brg in features Curtis 8044-8 )C adjustable weight and tone.trontpanel volume and speed controls (8-50 WPM). Built-in dot-dash memories Speaker, sidetone and push button selection of semi-autorratc tune or automatic modes Solid state Keying. Bencher paddie is fufly adjustabfe, heavy steel base with non-skid feet. Uses 9 v battery or 110 VAC with optional adapter, MFj-1305. 9.95. Read...

Wm

C169 is a couple of light-duty insulated wires twisted together. 1 he amount of twist is adjusted (sounds very precise, doesn't it ) during the calibration procedure. I ho semiconductor complement is i 4 diodes, 30 transistors, and seven integrated circuits. With the total of 70, it might seem a lot, but don't hurry the task to get through it quickly. Mount the diodes first and again the pigtails should be kept as short as possible. Take particular care with the diodes that art1 mounted on end...

Smart Patch

CES Simple* AutDpatch 510 SA Wnl Pile h F M l ra-nsr.i i< r To Vou' Telephone Great For Telephone Cdlls Fiom Mofrie To Base Simple To Use s m 35 VoCom Mirage Daiwa Large inventory of Tokyo Hy-Power Saxton Wire & Cable Amplifiers & 5 8XHT Gain AMERITRON AMPLIFIER AUTHORIZED DEALER

Available At Participating Dealers

Quality Communication Products Since 1932 WRITE OR CALL 10 CANAL STREET, BRISTOL PA 19007 215-788-5561 Harry Dl Hooton W6 rVH 7-J20 Shamrock Lane Lincoln CA 95645 The problem A broadband antenna fed with coax exhibits narrowband response. The solution Use this exponential-line matching system. In high-power shortwave broadcast stations such as the VOA and others, the tapered or exponential line is generally used to match the high feedpoint impedance of a single-wire rhombic antenna to a...

Because Of Availability

Fjg 7+ A theoretical 50-0hm bridgei 50 73 for Radio Amateurs * September, 1985 compiished. First 47-Ohm, ViAVatt, 5 carbon resis tances are readily available, so if we built a bridge using them we would have a good 47-Ohm bridge. However, as almost all of our present-day equipment is based upon a 50-0hm impedance value, wo will design for that figure. It would be possible to file down the 47-Ohm resistors to 50 Ohms, but there is a much easier way. In the theoretical bridge circuit of Fig. if...

Barry International Telex Merchandise Taken On Consignment For Top Prices

Thursday to 8 PM. Saturday & Sunday 10 A.M to 5 P.M. (Freo Parking) AUTHORIZED DISTS MCKAY OYMEK FOR SHORTWAVE ANTENNAS & RECEIVERS tRT LEX-Spring SI. Stalion 1 Subways SMT-'Prince St. Slation INO' F Train-Bwy. Stalion We Stock AEA, ARRL. Alpha, Ameco* Antenna Specialists, Astatic, Astroa B & K, B & W, Bash, Bencher. Bird. Bultemut, CDE. CES, Collins, Communications Spec. Connectors, Covercrait, Cushcraft. CommefCiaJ Equipment Stocked ICOM. MAXON,...

Niagara Falls Ny

The 19& 5 HanvO-Rama will be held on Saturday, September 14, 1565, at the Niagara FalEs International Convention Center, Niagara Falis NY. General admission will be 33.50 In advance (before August 24) and 5.Q0 at gate. Outside flea-market spaces are 5.00. Inside flea-market tables are 15,00. Features include new-equipment displays, computer displays, technical programs, FCC exams, net and association meetrngsr and the annuaf W2RUF memorial code-proficiency test. (For more information about...

Engineering Consulting

583 CAN LEWOOD ST., BREA, CA 9S621 (714) S71-2009 With The H AZER Engineered for Rohn 20 & 25 Towers Antennas artf fo*a'or mount or HAZEfl complete system Trams Trj iiT m vestal upngM posihort Satety loc* system opefaEes wftile raring or lowering Never carr fan Easy to mstaJi and operate Complete kit for 50 O' ItfiS tows ' includes winch, caoie. hartiware and irrslructtons Hazer2 - Heavy duty alum 12sq tt toad S297.00 ppd Hai ' 3 - Standard alum 3 tt ioat) 213 00 ppd. Hajr j 4 Heavy gal...

But Look Before You Leap

Both units are Packet Radio Terminal Node controllers with AX.25 protocol, a standard RS-232 compatible port, and command format software But many differences exist too. Buying the Kantronics Packet Communicator makes sense. You know our reputation for quality products and after-saies-support. You knowthe Kantronicstradition of making com puter interfaces and sof twa re that work. So take your pick, the unassembled kit with no warranty, or the guaranteed Kantronics Packet Communicator, ready to...

Gain

FftEE SPACE PATTERN OT < Ett h' flflOADSlDf SECTION ALONE TH S IS ALSO F Ei.0 PATTERN F COWB'NA ON iA* F g. J. Rad ai on pat terns of m ulti-element phased arra ys. Now, if we add the four ii> phase half-wave linear elements to the V system as shown at test point A in Fig. 1H we add about another 6 dB of bi-directional gain to the system. Since both the V and curtain sections are driven in phase with each Other, their respective radiated fields add and produce a total bi-directional gain...

Engineering Consulting Introduces

TUNC THE WO LD FROM YOUR HANDHELD WHF UHF RADIO H FOUR Dt n O MV DECGDEI S, PL US 1 DJG1T KtyPALj CONTROL Pr i i ilIi.-iNnf poELEagc -nnd han-Jhm IJA n , .-il,.r r . * Mrt it Iin-l t t -asir .n n U 4U1 ti uj Ii. -ca- i 1 fcj' * -.ir i bT n lr -cti n ne - -1J+-.1 * iiTTr r i-j u.'A iu i0 Uf-.L'ii- nil. - ,. LjlHutl .dlu r irr HJ 'iiq *tt. (Itf* wL.gii

Info

Box 494, MisilulppI State, MS 39762 to oroer or for your nearest dealer. call toll-free 800-647-1800. Call 60V323-5869 in Miss, and outside continental USA Telex 53-4590 MFJ STKV Gary Rennie KC8BN 7 9124 t. C lencove Mesa AZ & 5207 BOTH ELEMENTS HAVE A 47Kil I WATT NESISTOR in PARALLEL TO THE CAPACITOR BOTH ELEMENTS HAVE A 47Kil I WATT NESISTOR in PARALLEL TO THE CAPACITOR

Coaxial

CtmUind, OH U135 (Zlfi) 267 2233 0inside Dftio, WATS (UM) Coaxial, Tele* 930-630 and announced the times as he runners passed various points. Everyone had a grand time. Some of ihe people who participated in the race ran. some walked, some rested now and then* hut everyone finished, One race was 5 kilometers and one was 10. Entry fees netted thirteen hundred dollars for the sponsors, and the runners aalready training for next year The work of ihe amateurs was...

Mhi

Current distribution (theoretical) for the antenna at 14, 21, and 28 MHz. Some gain occurs at 21 and 28 MHz as a result of the dual current loops. Aluminum tubing would be ideal for constructing this vertical dipole. 1 chose gal-vamzed-steel electrical conduit for two reasons (1) This area can be quite windy at times, and (2) none of the hardware stores nearby had any aluminum tubing. A complete parts list is given. The bottom section of the antenna is identical to the top section...

Usui Atdr

The original 75-meter dipole at W6TYH (see textjt pecially for shortwave receiving antennas and tor VHF and UHF arrays. As shown in Fig. 1, the spacing between the two line conductors is greatest at the end of the section connected to the antenna. At this point, the impedance of the line is high enough to closely match the impedance of the antenna feed-point for maximum transfer of rf energy. The other end of the line, in the direction of the transmitter has very close spacing between...

Sep

The Cleveland Hamfest and Computer Show will be held on Sunday, September 22, 1965, from 8 00 am to 5 00 pm, at the Cuyahoga County Fairgrounds, Be re a OH. Admission is 3.00 in advance and 3.50 at the gate (under 12 tree). Indoor tables are 10.00 for an 8-foot space and 8.00 for each additional 8-foot space (includes table and chairs set up Saturday 12 00 to 5 00 pm and Sunday from 6 00 am on). Outdoor flea-market spaces are 4.00 each (overnight parking will be available), Features include...

N

RF Connectors PL259 10 4.95 M358 2.50 ea. Type N Twist on (RG8 u> 4.75 ea. Sffll'WG HF INDUSTRY SfNCt t9 Phone (718) 646-6300 Ca CfCO for Your CC7 V Secant* And Color Production Requirements of control operators, etc. A functional block diagram of the control link and a sys-tern-network diagram should be included as part of the station log. Relevant sections of Part 97 rules include 973, 97,61(d), 97 88, 97.90, and 97126 The ability to carry your HF station with you anywhere changes the c...

Amateur Television

With a suitable modulation meter or monitor receiver, adjust VRbl for 5-kHz peak deviation The setting for 5-kHz peak de ia-tion should be approximately rotation of VR61. This should be adjusted at 146 MHz simplex (center ot band range). 2. Adjustment of twist capacitor C169 With dummy load connected to output, press PTT and adjust CI69 by tightening or loosening turns to achieve 90 FSDon the signal power meter in the transceiver. Once the alignment has been completed, the vco enclosure can be...

Selltrade

Call or Write Us Today For a Quote You 'll Find Us lo be Courteous, Knowledgtable Off DE RS 'WELCOMED . Thty'rt our buimtii P.O. Box 73 206 East Kemp Wateriowa SO 57201 P.O. Box 73 206 East Kemp Wateriowa SO 57201 THE AMTOR TERMINAL UNIT I Works with any ASCII terminal or personal computer with a terminal program. Also works RTTY. CW, ASCII. ORDER YOURS TODAY 1 Limited quantities* here is the next generation Repeater

Moving

Lei us know tt weeks in advance so that you won't miss a single issue of 73, Attach old label where indicated and print new address in space provided. Also include your mailing label whenever you write concerning your subscription. II helps us serve you promptly. Write to Lxk-nd mv subscription fine additional year ior only 519.97 Pavment encliiwd Bill me C jnidi jnd S4nko iJJ v nl> U4 fund drj n on US bjnk. Suifue tl . -l Ls funds dfj irt on US hini f fnei n Airmail, pleise inquire you have...

Card

Note Our TOLL FREE Ordering line 1-800-558-0411 is answered until 8 pm CST Monday thru Thursday. I have the following to Trade (What's your Deal ) Rush me your quote - i understand thai I ain under no obligation, Name_________ WICKLRFFE, Ohio 44092 28940 Euclid Avenue Phone (216) 585-7388 Ohio WATS I 800-363-0290 621 Commonweaith Ave. Phone (305) 894-3238 Fla. WATS 1-800-432-9424 Iff* 1-800-321-3594 gff 1-800-327-1917 CLEARWATER, Fla, 33575 1898 Drew Street Ptione (813) 461-4267 No In-State...

Louisville Ky

The 1385 Nalional ARAL Convention will be held on October 4-6, 1985. at the Kentucky Fair and Exposition Center (Exit 12 off of 1-264), Louisville, Kentucky Admission is 5.00 in advance and 6,00 al the door (12 and under are free), Features include a 200,000-square-foot Indoor exhibitors' and Hea market area. ARAL forums. packet radio, AMSAT, FCC. National Weather Service, and alternate activities. For more Information, contact the Greater Louisville Ifamtest Association, PO Box 34444,...

Old Westbury Nv

The Long Island Hamfaiir will be heid on Sunday, Septem* ' 2Z at the New York institute oi Technology, on Route 25A Mori hern Boulevard. Did rtestbury NY (1 rZ mile east of Glen Cove Road). Gen era admission is S3.0C Wives, children, and sweeihearis are Iree. There will be a S5.0C charge per car space for exhibitors. Talk-In on 146 66. For further Information call Hank Wener W82ALW at 5ifiHt 4-4323 (nights) or Bob Reed WB2DIN at (516 221 -S116 The Rhode Island Amateur FM Repealer Service, Inc.,...

Micro Tu

The most cast eitective terminal unit available tor getting started on RTTY tins is an uptf rJ uErutin ot the AHtely tUsiribrtEd plpgtam by KG3V A good iiwttr pTu jr i ft* new ft TT Y useti K19 includes PC board, full liQcumentipiuin antt n parts (gxcgpi casfl ami lower supply i.asy hookup and calibra i n Receives trum speakaudio FSK and rilkroph flfl AfSK outputs CUB DISCOUNTS AVAILABLE DEALER (M0UlRIES INVIT D Write toi further deiaifs Send check or money onler to Zellweger Elecnojiics ArJrf...

Amateur Electronic Supply

4828 W, Fond du Lac Avenue Milwaukee, Wl 53216 - Phone (414) 442-4200 WICKUFFE. Ohio 44092 2S340 Euclid Avenue Phone(216) 585 73B& Ohio WATS I 800 362 0290 ORLANDO, Fla. 32603 CLEARWATER. Fla. 33575 621 Commonwealth Ave 1898 Ore* Street Phone (305) 894-3238 Phone (813 461-4267 Fia WATS 1-800-432-9424 No In-St ale WAiS 1 800-321 3594 fiff 1-800-327-1917 No Nationwide WATS LAS VEGAS, Nev. 89106 072 H Ranchn Drive Phone(702)647-3114 Ho tn State WATS CHICAGO. Illinois 60630 ERiCKSON...

Frew Earth Stations

1977 toJune 1980 July 1980 to Present Add 1.00 per magazine for shipping, 10 or more back issues add 7.50 per order for shipping. 73 for Radio Amateurs Back Issue Order Dept. 80 Pine Street Peterborough, NH 03458 Prepayment by check or money order is required with your ad No discounts or commissions are available. Please make your payment to 73, Hates for multiple insertions are available on request Advertising must pertain to amateur radio products or services. No special layouts or positions...

Houston Tx

Houston Ham Conventions, Inc,, will sponsor Houston Com-Venllon 85 from Friday. September 20, 1985. through Sunday, September 22, 1985, at the Stouffer Greenway Plaza Hotel, Southwest Freeway (US 59) and Edloe Street, five miles southwest of Houston TX. Registration opens at 5 00 pm Friday night. Saturday hours are 3 00 am to 5 00 pm Sunday hours are 9 00 am to 3 00 pm. Features include an Indoor flea merket, forums, commercial exhibits, alternate activities, and a Saturday-night Texas BBQ...

Monolith Continuous Tuning Vertical Antenna

Frequency Range Model 4010 7-30 Mhz 8010 3-30 Mhz 16010 1.5-30 Mhz 5319 SW Westgate Drive, Sufte 113 Portland, OR 97221 (503)690-1108 -or information on the latest in Vertical Antenna technology, call or wnte for your free catalog of Quantum antenna products. This is quite a straightforward process, although you do need access to some test equipment (1) a digital multimeter, (2) a dummy load, e g . DSE cat. D-7027, (3) a 5MHz (or better) osc riloscope, arrci (4) a digital frequency meter. 1....

Attention

Do you vg Appfewoiks Have a 1 3K lie or lie7 Here's a data disk to ce used with ihe AppleWorks proqrarr con raining the current DXCC couniry listing and heir prer.xes. ITU A CC zonel , ann specif preiixes In addition each record nciudes thirteen labeled gala fields to record calls worked, efete fime. modu, H& T OSL status and any miscellaneous information ihe file Can be -ully searched. orde d, updated, fid pnnTecj ng Appl works Hew aboo re L-VAS award No pro ie rh iftts disk a so cpn ain a...

Also Has The Most Impressive Performance Features

(AND GIVES THEM TO YOU AS STANDARD EQUIPMENT') HIGH QUALITY XMTR & RCVR MODULES FOR REPE A TERS, LINKS. TELEMETRY, ETC. RECEIVING CONVERTERS LOW-NOJSE PREAMPS ACCESSORIES SENSITIVIT SECOND TO NONE 0.15 uV(VHF), 0.2 tiV UHF)TYP. SELECTIVITY THAT CANT BE BEAT BOTH 8 POLE XTAL FILTER & CERAMIC FILTER FOR > lOOdBAT 12KH2. HELICAL RESONATOR FRONT ENDS TO FIGHT DESENSE & INTERMOD. OTHER GREAT RECEIVER FEATURES FLUTTER-PROOF SQUELCH, AFC TO COMPENSATE FOR OFF-FREQ TRANSMITTERS, SEPARATE...

Bv Engineering Analysis Software

BVE's L C1PR0 software provides control-system and electronic engineers simple means to quickly deterrr-ine closed loop system stability from open loop transfer functions, LOCiPRO is a stand-alone computer program *hich quickly solves the locus of roots for systems up to 26th order and with ten loop elements. Output data can be vectored to a line primer ot to a data file All program inputs are tree-form at and menu-driven. All output files are compahble with other BVE programs, so you may add...

Element Fill In The Blank

on. and nobody gave him the slightest chance of survival it he ventured away from this retreat surrounded by the Cascade Mountains. Bui the kid did escape. Firsl he went east to Michigan, then south to Texas and Alabama, Now he has put his two cent's worth Into the way things are done in western Pennsylvania and Geor gla> Rumor has It that he is also heading west lo Hawaii, Weil, the kid Is making a bit of a name for himself, bui in ihe process he Is giving the 15-kHz folks a chance lo evade...

Triokenwood Communications

California 90220 High stability, duat digital VFOs. An optical encoder and the flywheel VFO knob give the TS-940S a positive tuning feeir 40 memory channels. Mode and frequency may be stored in 4 groups of 10 channels each. General coverage receiver 1 yr. limited warranty. Another Kenwood First, Ccmip'ere service mar ate are available tor aU Tr Kenwood transceivers and mosf at cossorte1 hcatioftS jnd prices are subfeci to chang* Mf io r notice or ot i gation

R M

In corpotaled (the League), the national association of amateur-radio operators licenced by the Commission, hereby respectfully requests tha the Commission issue a Notice ot Proposed Rule Making looking toward amendment of the Ama-leur Radio Service flules (47 C.FR Part 97) to enhance the operating privileges of NOvice-cJass amateur-radio operators. In support of this Petition, the League states as loi lows The Amateur Radio Service has always been self-reliant...

Top Element Sow Version

75GpF SILVER MICA CAPS 5 46 WIRE SECTrCNS 70 m LOMG 36 to, CAPACITY HATS AT END and it is quiet on receive compared to a regular half-wave inverted vee at the same altitude, I have no way to determine the radiation angles other than to accept what W4FD and W4ATE wrote in their articles, The darn thing works The CCD compares equally with my home-brew half-wave dipoles on received signal strength but is superior when receiving weak signals and signals with QSB. i am amazed, in that I must be...

Touchtone Dtmf

ALSO OlWl i fc UMTE& -5P*C6 AHTEHHAS 0 j(s1 n< jjnfl twiformm* f WMMMflfAMK i tftcwn( N n- w *ul l4> M Vw T I Jow S R'Co i(B -3 et> *i CJ IW cI' FULLf ASSEMBLED i-J YW HWElTrtd C n1w E< nu*JKV0Khb*itt) * Et1t to n rW V r f J.0W_B n n ito mein I rttT r u c 11 tlrtfc *& ui (Jfl t HJii*+ t 1 0 3 NO-m T1 UlPOLI B0 IK 4CfM i - - 40 iiD It leng B 11 40 II 11311 k n9 MM < 3-b4nd spftce-savtfi dipole i go j1 m * 4& 1i.lortn 4 Fl Li i li ii L wide rHign Un i J i AD 40 to, ill TA...

Ttc Touch Tone Controller

High performance, Supor versatile design Uses new high quality Xtal Controlled Decoder IC, w hltjh immunity (O lalsing 3 ON OFF Functions per Majn Card Easily ex-panda ie to any no of functions 'Expansion Cards. Field Programmable viaplug-in Cotfed Cards Latched or pulsed outputs many unique 3 drgn codes available. Nof jt s ca y 1-dtgit with compere i e units Translator Switch outputs can directly trigger solid slate circuitry or relays, etc. for any type of conirof lunclron. Inierfaceable to...

Digit Sequence Decoder

Opi-n oliecttM- ovTv > t Conrr-nl r ig s mu e flLi J.rj Fitf iH < ae mDSL rig --jnE on '2V C (35mii Vvtyr 1 500 dat rent cDdct Maket e*tiril(frit prr, jiecii qn hui,. repeate i Use il tu lum on HLfdKJ cr SDur a an iarm i MoTufriiary ri l tcHing oulputs nste'Uafd md tiLi ppted or seni c.hvi M Csl aridre S rirtrl pr-ir-i ini l,.rif> . shipping US i S nd to

Using The A Apogee Predictions

Apogee predictions for the month of September are provided for three sections of Ihe United Stales Washington DC al 39N 77W, Kansas at 39N 95W, and California at 33N 122W, Times a*e in UTC and apogee in this case Is mean anomaly 128 rounded to the nearest wholt hour. Use the chart as a guide In aiming your antenna, then fine-tune the aiimuth and elevation valuos lo peak the satellite's beacon signal. If you require more accurate orbilal predictions, contact AMSAT at PO Bon 27, Washington DC...

Model Pk

1 -J ffccry q op rai* < wired ind laiind * Operate with Val famciiwri ' Ell* Je rti. i ivf D apflrjilB * Suilt m PgchtC Msdirr. and CW idtnllhcillari * J 5* ich compunr rur- rial v fpn Uichini. ' T ffnrfifr *SCJJ if SAUOOT +5 to WW Utf ' Ruic Ljnfa SpKd 3f 900 WO or 1JW BfuC * Aniamjt'Uiir Hhielt Al.li or HDC-I * fltmoti Rcptatfi Cdinmtfrd Loctovl * Full fiididipMltf opvnllit 15 1 Om 90 Cwnmtndi lo dtsaUj t itt CJIns Hille t no*c 4 -filoel Od Tti i BJ-i VodH to* 4tlt '-ft Vri t M iirutltn td...

Radio Transcription Discs Want

Bo* 724 WG. RedmorKf WA 980734724. BNB347 CABLE CONVERTERS. Lowest price Dealer inquiries accepted. Quantity drs counis Free catalog P.G, Video Corp., 61 Gatcheil St , Dept 73. Buffalo NY 14212. BN& 349 TOO MANY MICROPHONES on youf operating desk WUh the SfSCO model 612 mike control you can now use one microphone with several rigs Prices start at 115.95. Southern Instrumentation, PO Box 5097, Orrnond Beach FL 32074 (904J-673. 1059 BNB351 MOVING TO CENTRAL FLORIDA...

Mfjt

Froo MFJ RTTY ASCII CW software on tape and able i VIC 21 Send and receive com puterized RTTY ASCII CW with nearly any personal computer (VtC-20, Apple, TRS-80C. Atari, TI-99, Commodore 64, etc.). Use Kantronics or most other RTTY CW software. Copies botft mark and space, any shift (including 170, 425. B50 Hz) a id any speed 5-100 WPM RTTY CW, 300 baud ASCII). Sharp a pole active filler for CW and 170 Hz shift. Sends 170 S50 Hz siiitt. Normal reverse switch, eliminates retuning. Automatic noise...

High Power Surveillance Ir Scope

Better communications start with your subscription Better communications start with your subscription Start my no-risk subscription today and send me 12 issues o 73 for 19.97. I'll save 33 off the newsstand price CHECK MO Bill Me (please make chmJ my able to 73) Canada & Moiko 22.97h ( ycnr only. US fundi Jrnwn on US bunk. Foreign surfinc 59.97 1 year only, US funds drown on US hank. Foreign airmail, please inquire. Please allow 6-8 wrcks for delivery. For more than 40 year we riove been...

Ho

73 for Radio Amateurs September, 1985 63 driven element and tighten it securely. Assemble director 2 as per the instruction manual. The tip-to-tip measurement of this element is 192.5 inches. Remember, each half of an element must be the same length as the other half. Again, you may add the two elements for vertical polarization if you wish, keeping in mind that this is only an option, not a necessity. Next, with a tape measure, measure a distance of 65 inches out from the 1 d i-rector. Make a...

A

Couple one turn to coo coil cup open w b length until resonant AT I J Hhj ONFiECT AT high impedance POlFjT see TEXT. fEST POtWT t- V R ETER SERIES HEfiE fEST POtWT t- V R ETER SERIES HEfiE nected across a copper-tubing coil. The coil consists of 5 turns of 1 4-inch copper tubing wound 2-1 2 inches in diameter and spaced to an overall length of about 4-1 2 inches The center point of the coil is grounded to the metal case ot the toroidal balun and the coaxial-line outer conductor (shield), The...

Heathkit Hd

The H04040 Terminat Node Controller TNC) has been added to the amateur-radio product lineup at Heath Company. The HD-4040isa version of the popular Tucson Amateur Packet Radio (TAPR) TNC which allows communication using terminal or computer control of any amateur-radio system. Packet radio ensures error-free communication and greatly increases communication speed The HD-4040 has a built-in 1200-baud modem, and baud rates of up to 9600 are possible with an externai modem. Both AX.25 and VADCG...

Element Multiple Choice

1 In a TTUype Circuit, the multipie-diode cluster ot the diode-transistor logic circuit is placed by a 3) sing leem Itte r t rans at or 2) A silicon-controlled rectifier is also known as a 3) Which of the following is not a liquid-crysial type 3) isotropic liquid-crystal 4 caicif ed liqmd-crystal 41 How many bits of memory does a 16 bn memory chip fealty have 5) Sefemum recW ers were ftrst devei oped around

M

Need for controlling them separately. With today's equipment, an unattended HF station is as practical as unattended repeaters. Frequency control of the VHF, UHF control transceivers is less important but can also be useful, particularly for telephone access and tor the ability to QSY. Any synthesized, BCD-controlled rig such as one which uses thumbwheel switches is easy to control by electrically simulating the thumbwheels externally. These rigs include many older ones that may right now be...

Astron

RS35M 25-35 Amp wmeter . . . 149.00 fly-1 stack Ciirome.Sy-2 Chrome 39 49 00 ZA-1A Batun 19 00 370-15 30m Folded Dipole 145.00 AT-110-5 Band Trap Dipole . . 76 00 AT-55 4 Gand Trap Dipole 58.00 Various Antennas 4 Coax Swilches m Stock Butternut HF30-Buiierfly Compact Beam 179.95 KF6 60-1 M Vertical 110.95 HF V 8& -40M VertJcal 115.00 TBR-160-S 160M Resonator . . . 49.00 Cushcraft A3 Tri bander 215.00 A P-1 OSCAR PKGE 149.00 Ringo Rangers 2M, 6M( 220. 450 39.95 oaiwa CN-620B1 & 150 MH2 Mtr...

Misc

Cubic Astro 150 . 5349.50 Collins Kwm 2k Round). HAL-OS4TDO ASfi ST-6000 (0 . . . CALL Wilson 1405 H T TT Pad Mic Standard 2M H.t. TT Pad 55.00 Realistic Hi-Lo Pocket Scanner 45.50 Natl NC-27 Rcvr 99.95 Tempo l0-fl00W 6M Amp 75 00 KDK 2015R W-TT Mic 2 MTR 169.50 Shure 444 HiZ Desk Mic 25.00

Washington State

QSO PARTY 0100 UTC September 14 to 0700 UTC September 14 1300 UTC September 14 to 0700 UTC September 15 1300 UTC September 15 to 0100 UTC September 16 The twentieth annual contest sponsored by the Boeing Employees' Amateur Radio Society (BEARS) Is divided into three operating periods, as shown. All am-aieurs are invlled to participate All bands and modes may be used, but no CW QSOs are allowed in the phone bands. Stations may be worked once on each band and more for contact points and more than...

Heil Equipment

BENCHER PADDLES, BALUNS, AUDIO FILTERS, IN STOCK MIRAGE AMPLIFIERS ASTRON POWER SUPPLIES Alinco Falcon Amps 2591HT, Corsair II, Argosy J I, Century 22 MAIL ALL ORDERS TO BARRY ELECTRONICS CORP., 512 BROADWAY, NEW YORK CITY, NY 10012. Maw Ynrk ritw* LARGEST STOCKING HAM DEALER nvn jr COMPLETE REPAIR LAB ON PREMISES

The Problem Solver

The RF Wattmeter Mode 810004 from Coaxial Dynamics, Inc. does more than provide accurate rf measurements. Testing of transmission lines, antennas, connectors, fitters and related components can reveal unknown problems and assure optimum equipment performance The 81000-AK Wattkrt features this easy-to-read RF Wattmeter (pictured here), with its optional carrying case and . an array of elements and Dynamics elements can be INK I Purchaseif separately for I use in other manufac- I more information...

Westech Electronics

RTE 286 Presque Isle Plaza Pittsburgh, PA 15239 Dayton photo-journey, cordless phones, construction methods Touch tone data display, transistor tutor tine conditioner COM mods, extra VIC-20 memory, shoestring K I 1Y OSCAR uplink amp, HF helicals, 15 meter CB Volunteer exams, I& iking repeater controller Dayton Haiiri ntion special Ishmod' journaE, the amazing Hat Tenn i Dayton in pictures, world's largest array, addon digital display Build a 2 m t ran see i vet razor blade radio, HW101...

Mountain State Award

The Logan County ARC will hold its fifth annuai 'Mountain State Award'1 expedition from a West Virginia mountalntop in Logan County from 16 Q UTC, September 14,190S, to 0200 UTC, September 15, 1985. Phone operating frequencies will be approximately 25 kHz from the low end of the General SO- and 40-meter phone bands, as propagation allows. The callsign will be KJ E. A handsome 8' x 10 certificate will be awarded to all contacts submitting a QSL and a legal size SASE to Robert T. Johnson WBVEN,...

Qhs

Til boxes 2,000 stations now, id more every da On 10,147 MHz 14,103 145,832 MHz 145.01 MHz OSCAR 10 and other bands you need Is your home station. a computer, some com your AEA dealer, or complete mformation package TODAY. You can find out about PACKET by reading WB7GXl)'s September and October 19 3, and P.O. BoSt C-21 LYNN WOOD, WA 98036 (206) 775-7373 TEpX 1S2S71 AEA- INTL

Handheld Meter Transceivers

Optional ArC. adapter and mobile power cords < 19,95) Fbreign Orders - 55.00 Charges in 15 minutes Constant Current Automatic Voltage cut-off Battery doesn't heat-up 12v-14vdc input. Charge From any point in discharge without developing memory Proven in daily use Please add S3 f r Shipping and Handling Call far COD Information. Florida Residents Please Add 5 Sales Tax To All Orders. P.O. Box 17015 Plantation, Florida 33318 Jim's Electronics. 391 ) Squiiveda hivd.T Cuher City CA 90230,...

Glb Electronics J Nc

151 Commerce Pkwy,, Buffalo, NY 14224 716*675-6740 9 to 4 USA AX.25 is the AMRAD approved digital format STANDARD used on amateur packet radio networks._ Assembled Tested. NolCa. 90day warranty Package of all ICs except 2-2716 EPROMs 80.00 System Tested 4,5 x 6 board complete with all ICs and programmed EPROMs personalized for each purchaser. Requires only single 8-10 volt Vz amp power, 1 year guarantee of hardware soft-ware AX.25 standard RS232 serial ASCIf at any user baud rate.RS232 HDLC for...

Ne

Physical attachment of the slats. Fig. 7. the feedline is connected to the center oi the antenna using hose clamps and electrical tape (see te t for details). at the 30-meter paradise.) I did have a few rag-chews amidst the heterodynes of the shortwave broadcast stations, but the reports were marginal. Using this antenna at 3 5 MHz gave no surprises. The fact that it tuned up was evidently a coincidence, resulting from the line length and the length of the antenna elements A few...

Hiding Behind

If ihe U ijue's Board of Directors had aver envisioned the furor that their endorsement of a 2-meter repeater oand plan has brought about, I doubt if they would ever have given the plan their blessing. But hindsight Is wonderful, and what's done la done. In a way, the Board did those Involved In the coordination of 2-meter repeaters a favor. For years, there had been a definite adversarial relationship between the proponents of iwo dlllerent forms of 15-kHz plans, but lhanks to the ARRL Board-,...

Jiz

Each month, 73 brings you ham-radio news from around the world> in this collection of reports from our foreign correspondents. we present the latest news in OX, contests and eventsr as well as keep you abreast of the technical achievements of hams in other countries. If you would like to contribute to your country's column, write to your country's correspondent or to 73 magazine, Pine Street,. Peterborough NH 03458t USA, Attn Perry Donham KW1Q>

Slk

US'Cari diin Arid 3, Foreign Ordms Adit S5 US fuiuh Oniy CHECK MCTi VISA & MC ctPfiiMl No CQOmrf Q.a EX IK i CATAMHv to be sent I feiuit ftwd witn & *tirv sii nnll Mni riflipirMI iii'il ftr d 21 frse prrr r nrr-.S, ISIKjSl WUfi. SiOO oteisn. CBLBlfin rwqunst wrtfroul pntmfl rt wilt bp Sflffit bulk mail 5025 S Rang dins Rd. W Milron. QH 45383 I * 1Q QO a m 5 00 p.iri, EST Mon. thru Fn j i * (513) 6eS'563fl or 1513) 333 1 725

Lql

Greatly improve your RTTY copying capabilities. Add a crosshair LED Tuning Indicator that makes tuning quick, easy with pin-point accuracy. Add mark and space outputs for scope tuning. Add LEDs that indicate 170, 425, 850 Hz shifts. Great fof copying RTTY outside ham bands. Add sharp mark and space fillers to improve copy under crowded weak conditions. 170. 425, 850 H2 shifts, Add Normal Reverse switch to check for inverted RTTY without retuning. Add output level control to adjust signal into...

Items

During the improved tropOSpherlc conditions of propagation in October 1964, there were many contacts made between OK and G In the 145-MHz band, bul only G4LAW was successful in making contact from an automobile with OK1KHI P with a transmitter of 10 Watts and a quarter-wave antenna. The satellites RS At tha beginning of 1985, the satellites RS5, RS7, and RS6 were working safely. RS7 was switched on only when operating robot 1 RS5 was used occasionally for 'codestcre, and Its robot was switched...

Leaeaeae

Mike 7a mow ski W'D9tLC 2927 A f sr ftorts ord Avenue Saint Francis W f 53207 Its every ham s dream An 80m antenna with a flat swr of 1.5 1 from 3.5 to 4.0 MHz. And it couldn't be simpler. Are you content with be ing stuck in one narrow segment of the 80-meter band Do you enjoy tuning your transrnatch so your soi-id-state rig will function properly If you answered no to either of these questions, you may be interested in this antenna. It works wefl across the entire band The swr is better than...

Mfj Kw Roller Inductor Versa Tuner V

It hi ill the features you asked i * * for, including the new smaller size to match new smaller rigs - (+110) onry 10 3 4 W X 4 1 r H x 14 7 8 D, Matches coix, ibaianced tines, random wires t,6 to 30 MHz. 3 KW PEP-the power rating you won't outgrow (250 pf-6KV caps). Roller Inductor with a 3-digit turns counter plus a spinner knob for precise Inductance control to get that SWR down to minimum every time. BulIMn 300 wett, 50 ohm dummy load, built-in 4 1 ferrlte balun. Built-in...

Meter Midget

Wflaf tot.'Qws fS the text of the ARRL's pe ttUan to fa* FCC requesting art expansion ct Novf ce prfviie es. The Commission he s received several petitions covering roughty the same area, and any Notice of Proposed flute Making NPRM) that the FCC generj res will lively > e a s ynthesis o ait of them. However, we ieei that the League's proposai embodais the heart of the issup and that the NPRM will co& lain most pt the items reouested in this petition. Please read it carefully A vote...

Mfjb S

Dual fllton give unmatched performance The primary filter lets you peak notch, low pass or high pass with extra steep skirts. Auxiliary filter gives 70 db notch, 40 Hz peak. Both filters tune from 300 to 3000 Hz with variable bandwidth from 40 Hz to neariy ffat. Constant output as bandwidth is varied, linear frequency control, Switchable noise limiter tor impulse noise Simulated stereo sound for CW lets ears and mind reject GBM inputs for 2 rigs Plugs into phone jack Two watts for speaker Off...

Micro Control Specialties

Division of Kendecom Inc. 23 Elm Park, Groveiand, MA 01834 (617) 372-3442 Robert Baker W& 2GFE 15 Windsor Dr. A too NJ 08004 ARRL VHF QSO PARTY Starts 1800 UTC September 14 Ends 0300 UTC September 15 Sponsored by the ARRL. the objective of this contest is to wort as many amateur stations in as many different 2 k i prirt squares as possible using authorized amateur frequencies above 50 Mhj Operating categories include single operator mum- or single band and multi-operator Single-band entries...

Ndrw

The problem A broadband antenna fed with coax exhibits narrowband response. The solution Use this exponential-tine matching system W6TYH Here's the slickest application of the wheatstone circuit yet devised. The Nuller Bridge is the only instrument you II need to adjust your antenna matching unit to peak Stand them on end Sounds odd. but W1GV presents an excellent case for HF vertical Get range-tested 12-dB gain for under S5f K.C Jones engineered this 2m delta beam for maximum bang per Ravage...

Newsletter Of The Month

The Florida Ar jiieur glial Communications Association FADCA- recedes September s prize tor tis ouistanding publication, the FADCA> BEACON. You'N noi fmd a great deal of information about FADC in he BEACON, no minute* ot the last meeting, no endless pleas fOf ctub participation. In the r place is a Hood of material about packet radio reviews of new equipment, modification and construction ancles, tips and lechmques. all packed into a rtjlume that becomes more a reference book than a...

O

Loss as a function of frequency for common 5O-Ohm coaxial cables Foam-dielectric cables ha e lower loss but may age more rapidly. These figures are in dB per foot to find the overall line loss, multiply by the line length in feet Fhe result is the loss in your transmission line, assuming a perfect match. Fig. 1. Loss as a function of frequency for common 5O-Ohm coaxial cables Foam-dielectric cables ha e lower loss but may age more rapidly. These figures are in dB per foot to find the...

On

TRANSFORMER u AND t wfXlHD ON AU 4 - FERptTE f ig, 5, (a) A fnp e-conducfor system for 40 meters, (b) Method of coup ng exponential line to a transmitter. Fig. 6. Graph of impedance ersus length for the > meter exponential section 'ofe hat the cur e is linear, Fig. 6. Graph of impedance ersus length for the > meter exponential section 'ofe hat the cur e is linear, antenna was fed by a tuned feeder system made from two 12 copper wires 60 ieet long spaced b inches apart At the...

Onjlv Smart Patch Has All Of The Above

Now Mobile Operators Can Enjoy An Affordable Personal Phone Patch. . * Using anv KM tranceiver as a base station. * rhe secTet is d SIMPLEX an topa i eh, The SMART PATCH. To install SMART PATCHt connect the multicolored computer style ribbon cable to mic audio, receiver discriminator, lrlTn and power. A modular phone cord is provided for connection to your phone system. Sound simple - * . IT IS

Pc Board

PLATED THRU HOLES We specialize in prototype, ane ff and small quantity runs of PC boards. We eail fab your PC board frxjm ctirtiera-reajtiy artwork for oonfcider& bly lese than the pro duotiqn shope, but with professional A-l quality. If you don't have artwork we pan design it for you. Give ue u uall, or write j ALL BAND TRAP SLOPERANTENNAS FULL COVERAGE ALL B A N PS I AUTO Ml A TIC SELECTION wIlhPROVEN W aet etprocf sealed Traps . tB Ga Copptrweld Wire) GROUND MOUNT...

Pds Telephone Security System

Electronic Specialists' product line now Includes Ihe Kleen Line PDS-21 secondary telephone security system. Commonly used for office and factory Installations, Ihe PDS-21 suppresses transient voltage spikes and filters against rt interference. Special models tailored for telephone. data, or remoteoontrol applications may be ordered One Ihrough twenty-five pairs may be accommodated For more Information, contact Elec tronic Specialists, lnc 171 S Main Street. PO Box 389, Natick MA 0 760...

Regulations Upqateo And Liberalized

Beginning the first ol May, a ne* table of frequency allocations and power outputs went Into effect which has now brought the privileges ol Israeli amateurs in line with those ot hams Irom the most advanced countries. The big item was the allowing of 1500 Watts output on all HF bands (excluding 10, 24. and 18 MHz where maximum out put Is 1 kWi for amateurs holding the Grade A license Grade B licensees are now allowed 150 Watts out, and Novices 15 Watts out, gaining exemption Irom the need to be...

Ramsey D Vdm Multitester

Co iipJJfJl JinO reliable deSigm* 10 -r ivNCi- 1 iflrnrty c l f QuJpmenl. Fe incwc m ir& f t c* > ca dGuDk jtwelefl precision rtujvmg c& t double anrioadprp- 1, , - ,jji * li- me< 1 i luw cqtl yfni tor J1 pr i1 - J'jft * l' nrtQM Irotn 0 5 to Q2 t& o** Mhr ad ttc* tnc > Xi MMpmVTCIlHP * In* tr g loum. Cw. CHZ UTE n n-.fcj md ATTcmM V moQ Y * Ironf panai a tttt. Z ua PT*JI * *< WKr-urO iPtg HT rt-l iPfUtfr , u u-z i'tf * 3j satE a c O tpwrt feitotoCu *ngt *M*p * HUB f

Specialists

CA 92665-42 Local (714 998-3021 FAX (714) 974- 420 contacts in the 1 -MH band, opiating SSB. in the contest, they were wording with transceiver UW3DI (their own 0K3CZM product and a vertical antenna 20 meters high, wilh a total length of the radial system 2,000 meters. They made 1,200 contacts, t.OOO of which were with the USSR f1.fi MHz is in a local band In the USSR, where there are a great many radio amateurs with various prefixes j Under very had conditions they...

The First Name In Electronic Test Gear

Unurpawnj aw , mi unba*iiDi me Ramsey o c k> - scop compares lO Olh r cosnnQ twnarmn more Features include stt . L-. I atircuilfy . l .il' ipjc 2 -.i circuit ana cJictOft iwttng TV lync He* wt bMawtth & ftigft t . , 1 ft.*' fi - fir Traci ttliUl ' * Z a.* ligh I-. iff. , rr-.-jtH n - n'-Uti 1 pcr*ef ipp * tuM-m alibflot ' > usa-add h0.qo uhn 1< m p ilao , add IS1, of lolai ordar ft> r r uBi Surf * MUil

To Transmitter

Fig. 3. (a) A triple-conductor system for 75 meters, fb) Method of coupling exponential line to a transmitter center-to-center spacing between the two conductors and d is the diameter of one conductor Both S and d must be expressed in the same basic units. 4) To determine the cen-terto-center spacing, S, between the two conductors at the various points along the line, use the following formula S (d x antilogy (Z0 276)) 2, where Z0 is the impedance at the point on the line (above), d is the...

Useca

Members of the Utica-Shelby Emergency Communications Association will operate two spec fat-event stations from 1300 UTC on Saturday, September 14, lege football coach in history, Paul Sear Bryant, The Bear Bryant Station wHl operate from the campus of the University of Alabama from 1300 UTC to 2400 UTC. Phone frequencies will be the bottom 25 kHz of the General 40-10-meter phone bands, WAARS w ll atso work Novices on the bottom 25 kHz of the Novice bands. For further information, write to the...

Weather

ONE OF your MOST TALKED-ABOUT TOPICS Why not share with other weather enthusiasts around the nation. Your weather experiences may provide valuable education for others who also enjoy our magnificent atmosphere includes one year membership and 12 New issues of the American Weather Observer Association of American Weather Observers PO Box 455 Belvidere. IL 61008

York Pa

The York Hamfest Committee will present its annual hamfest on Saturday and Sunday, September 21 and 22. 1985. at the York Fairgrounds, State Route 74, York PA, Registration wilt be 2.00 on Saturday, 4,00 on Sunday, or 5.00 for both days. XYLs and junior ops under 12 will be free. There will be a Saturday-evening banquet ( 10.00 by advance registration only). Tailgating 10 loot space) will be 4.00yday or 6.00 for both days, indoor display area tables will be 55.00 and up per day. Vendor setup...

Antennas

Uor Wm t rO t Hnirii W fc4i i druih of our VHF UHF items. Prc-selector Hlters Pre-amplifiers Antennas Lo* pass fillers Transvencrs C'rysuil Fillers Varaclor iriplcrs Converters Spectrum InirrnaiionftE, Inc. Post Of five Boi 1084S Concord, Mssi+ 01742 USA PrrrqiJ3lrtV hl3i7St in r11 rr> e n - 3 se f i ts st jrv ,i r r I 19 racks.tyjp.rail thuy 1 6 75 a 3 8 , 5.5 Supplied fut 11V Bflmblv tiikis pusl i r onplp mimics Hove you priced o ouill up wartmeter lote I v -> lii1 re-teased featuring...

Advertisers

AEA Advanced Electronic Applications Amateur Electronic Supply . Association of American Weath Barker & Williamson Barry Electronics ,. Bill Ashby Sl Son .,. Burghardt Amateur Center h Computer Trader. Connect Systems. Inc. . Electronics Book Club . Engineering Consulting Fair Radio Sales Fox-Tango Corp. Micro Control Specialties National Comm. Group

Eview

MFJ'S PORTABLE ANTENNA AND ANTENNA BRIDGE Every active ham Tve ever known has, at one time or another, found himself or herself in a real pickle concerning a suitable antenna. No, I don't mean at the home station usually (but it has happened there, too what I'm getting at is the portable situation in a hotel room, a motel, at a vacation site, or even If I topping' in the car Let's take a f'rlnslance that happened to me recently, I was forcibly ejected from my shack1' the spare bedroom) because...

Aea

Advanced Electronic Applications P.O. Box C-2160 Lynn wood, WA 98036 (206) 775*7373 TELEX 152571 AEA INTL lEAE EAEAEAE AEAEAEAEAEAEAE AEAEAEAEAEAEAEAEAE IC-735 Xcvi SW PS-55 Power AH20 Automatic antenna tuner TBA FL-32 EX-243 Electronic keyer unit 50.00 IC-730 8-band 200w PEP *tvi w mic 829.00 Ft-30 SSB fffler (passend tuning 59 SO Ft - A SSB filter (2nd IF) 159 00 FL-45 500 Hz CW EX -195 Marker uful 39 00 EX-202 LDA interface 730 2KL Aff1 27.50 EX-203 150 H CW audio filter 39.00 EX-205 Tra...

Mark Ch

No other repeaters or controllers match Mark 4 in capability and features. ThatHs why Mark 4 is the performance leader at amateur and commercial repeater sites around the world. Only Mark 4 gives you Message Master real speech voice readout of received signal strength, deviation, and frequency error 4-channel receiver voting * clock time announcements and function control 7-heiical filter receiver extensive phone patch functions. Unlike others, Mark 4 even includes power supply and a handsome...

Kenwood Tss Hf Transceiver

For a limited time - purchase a TS-430S at our normal Low Sale Price and receive the optional FM-43Q FM unit FREE JheFftM3G provides HF FM transmit receive or bands where authorized CALL for Sale Price. KEtfWOOD TVMDODA 2m 70-cm fW Dual Bander Covers 142 148.995 MHz and 440-449,995 MHz with 25W out GaAs FET RF amplifiers, dual digital VFO'S, LCD display, 10 memories w oftset recall, scan & lithium battery back-up. Band & common channel scan, priority watch. 16-key Autopatch UP DN...

Fl

FL-6 6Hi Q Resonators with Lo-Noise PL-4H, 4Hi O helical resonators & U> Noise Tr. Amp. in shielded housing. (420-470 MHz) Extremely helpful at sites with many nearby transmitters to filter-out these oul-ofband signals. Provides all Dasic autopaich functions Secure 3 Digit Access 1 Aux On Off lunchon, Audio AGC Built in timers, etc Beautiful Audio1 Writ& can tot details and a data sheet Used * SCap ooard to provide Reverse Parch and La d L-ne Coniroi ol w tiedfe- includes Jr> d nne...

Weather Proof Enclosure

W6TYH combination array for 75 meters, 26 73 tor Radio Amateurs * September, 1985 with this term, it refers to patches of relatively in tense ionization ionized clouds of varying intensity and size, moving, appearing, and disappearing at random. At times, the intensity of ionization in a sporadic-E patch is much higher than that of the normal E layer When this happens, the radio wave is refracted from the electrical cloud and the signals, usually at a distance of 1200 to 1500 miles, are...

Qrp In Czechoslovakia

During the last tfiree rears totlow ing stations were occupied with operating QRP 0K1AIJ OK 1 AM V OK1DMP OK1DOC, 0K1DWG. OK1DZD, OKHFAO OKI AR. 0K1M3K OKlMNV OK2BEI 0K26MA. OK2BTT OK2PAW OK2SSJ, OK3YAC, OL1BBR, and ex-OL5AYF Among the most active hams is Pavet 0K2BMA who has been operating QRP since 1979, He has made about 3,000 con tacts altogether, *ith 100 DXCC countries on alt shortwave bands He uses his own homemade equipment. Jindra OKIAMM has also fulfilled the conditions for DXCC when...