Chile

CE3GN Ceramic a Espejo S.A. Caile Maipu 269 Cast Ha 14781 On the 21 st of August, Rogelio Gomez CE3GF, president of Radio Club de Chile, gave me a phone call and told me Patricio, this is itl The Navy has finally authorized the expedition. Vou have exactly ten days to organize everything and that Includes the training of the operators who, although licensed hams from the Navy, have had very little experience in DXing and only spotty knowledge of the English language, Under...

Callbooks

Callbook also sts the amateurs In Canada and Mexico You get the complete and accurate US. listings (prepared by our own editorial staff), all the usual up-to-date Callbook charts and tables, PLUS Canada and Mexico. Now that*s real value Of course, Canadian and Mexican amateurs are also listed In the 1985 Foreign Callbook. Don't delay The graat new 1985 Callbooks were publisned December lr 1984. tAS CallkOQk 21.95 3.05 25.00 Foreign Callbook 20.95 3.05 24.00...

Info

Of division (pin 3), The second section is forced to divide-by-seven by detecting the count of seven with IC2C and IC2D and immediately resetting to zero I he divide-by-seven output is taken from pin 13. The divide-by-two output is applied to the reference input of the PLL ( C4) and to the network of R30 and C6, which creates the ramp waveform tor the

January Ham Conference

Ference met in Winter Park, Colorado, this January. In addition to discussions of potential solutions to the loss of high-tech career people which the fading away of amateur radio as a hobby has caused, there were demonstrations of some of the newest in microelectronics and ham gear. The most impressive new piece of ham gear for me was the tiny new Kenwood HT. Incredible. And yet the tiny thing worked just fine when substituted for my now huge old 2400 Kenwood HT. We gave the HTs a good...

Phoenix Az

1702 W Camelback Road. (602) 242-3515, East of Highway 17 5375 Kearny Villa Road, (619) 560-4900, Highway 163 and Clairemoni Mesa outevard 6265 Sepulveda Blvd (818) 988-2212 San Diego Freeway at Victory Boulevard At * j.v I* *L.P*A AMECO AMPHfc NOl * 1NI rt'R MAfir NMA - ftfli - RON BASH OF F lt eiENf -if - iifiD ' UTTF RKiUT l.mb > ig pi ri - csfSHC A -1 PAiyUA ' r> RAh E - PJIED E EiMAC * ilL Ff n Hi I - HUSTLE QAW - (COM - JSC j W WILLAH KANTROMl S -K-fzNnjVOOD * RI M UARSFN* l. UN AH -...

Mailbox

Thanks to W0KXP and NGD5A for noticing the error in Eiemenl I, Question 2 of September, 1984's FunI1' The official Conefrad frequencies were 640 and 1240 kHz, not 540 and SdO KHz, as my answer indicated. And no, the radio in my '62 Chevy isn't wrong although Til have to replace that burned-out dial lamp. ASTRON CORPORATION IARSEN ANTENNAS BENCHER, INC. FALCON COMMUNICATIONS 33 McKinley Ave. w. orange, NJ. 07052

Newsletter Of The Month

Only rarely have we mentioned newsletter logos here. Oddly, newsletters sporting fantastic artwork often fall short in their editorial content, and vice versa. This month's winner, however, makes the grade In both departments. The NARC Newsette. chronicle of the Nittany Amateur Radio Club (PA), veritably sparkles. Richard Sine KB3WN is Ihe editor of this fine publication, assisted by Richard Thompson K3BI& . Richard writes a wonderful column, ' Boring Interesting Enter-tainingrhd that takes...

Putnam County In

The Putnam County Amateur Radio Club will hold (5 third annua auction and Ilea marfcei on April 6. 13B5. beginning at 0 < K) am, at the Putnam County Fair flrounds, north of Greencastta IN, Admis sron for this all-indoor event is S-3. G per person and children under 12 are tree. Flea market latiles are 2.00 each, Setup begins at 6 00 am. The auction will t> egin at 1 00 pm. Food and drink will be available. For more Information, send an SASE lo John S. Underwood K9IIS, RFD 1, Box 10,...

MFJ

Huge 5 8 Inch bold black LCD numerals make these two 24 Hour clocks a must for your shack Choose from a dual dock that features seperate UTC and local time display or a single clock that displays 24 Hour time. Mounted In a brushed aluminum frame, these clocks feature huge 5 8 inch LCD numerals and a sloped face tor across the room viewing Easy set month, day, hour, minute and second functiom. Clocks can C* operated in an alternating time-date display mode MFJ-108, 4Vzx1x2 inches MFJ-107, 2 x1x2...

N Table

Fig. 8(b), Physical layout of my station. antenna to the (usually) low impedance of the transmission line. Almost invariably, discussions of the longwire tell us that a good ground is needed (often without discussing what constitutes a good ground ). As one who had tried to operate longwires in the absence of a good ground, t can confirm that fine advice. Unfortunately, the very factors which lead us to using a longwire also prevent us from obtaining a good ground for the longwire A...

Prices Subject To Change Without Notice

COLLINS Mechanical Filter 526-972 -010 MODEL F 55Z32F 455KH2 at 3.2KHZ wide. May be other rrodels but equivalent, May be used or new, 15t99 8 pole 2,7KHz wide Upper sideband, Inpedence 800ohms 15pf In 800ohms Opf out. 19.99 8 pole 2.7Khz wide Upper sideband. Brpedence 8O0ohms 15pf In 800ohms Opf out. 19,99 5 595-, 500 4, 5,595-, 500 4 4 pole 500 cycles wide OW. Impedance 800ohms 15pf In 800ohms Opf out. 19,99 6 pole 2.7KHZ wide at 6dB, Impedance 680ohms 7pf In 300ohms 8pf out. CW-1599Hz 19.99...

Wab

A method for improving uround-rod effectiveness in very dry or sandy soil. short in the first place. The 4-foot size is always too short, and a 6-foot rod is considered marginal The best is the 8-foot size, driven into the ground so that only 4 to 6 inches show as seen in Pig. 2(a), The wire lead between your equipment and the buried ground rod should be low inductance, For this reason, small-diameter wire is not suitable Perhaps best is braid wire, or, if braid is too expensive, use...

Vdc Amp Switching Power Supply

We just got in a small lot of ruggedly built, lightweight (4 lb.)f compact (11 if 5 x 1 4)f fully enclosed (cover removed for pic.), regulated, switching, power supplies made by RO Industries. Input of 115 230 vac is attached thru convenient, clearly marked screw terminals. The hefty 5 vdc 25 amp output is via heavy dutyf brass lugs with a Red LED sta tus indicator. All appear to be unused and in excellent condition. Shpg. wt 6 lb. PS*8 50.00 Phone (617) 595*2275 to place your order by phone....

Toroid

F-56& -1-H 2.4PT OD M 900 popular for broad band bal un (Inc. 160 m) and FtFII Greenville NH 030 (603) 878-1033 telflx 637697 Greenville NH 030 (603) 878-1033 telflx 637697 Santa Rosa CA 95402 APRIL IS DX MONTH Apm provides pfenty of excitemem to the deserving DXer. Although the sun spots iirxf propagation hav not provided (he thrilis of previous years, there is still enough DX on the bands to keep a 13 but the 250 + couniry types Qluad to their radios. And aven the diehard DXer will warn to...

Ultima Nicad Battery Charger

Ultima Electronics1 new low-cost UL-100 battery charger can recharge up to 4 nicad batteries at one time for jusi pennies a day. Ultima's UL-100 hattery charger is fully automatic and can never overcharge your batteries. It features three separate charging sections which accept 2 or 4 pairs of AAA, AA, C, or 0 cells, or one pair of cells and one 9-V battery at one time. Two convenient LED Indicator lights monitor battery pairs In each charging compartment to determine proper charging. A third...

Standard Features

Autopatch Reverse Patch, W 0 & 1 Inhibit Dial Pulse Converter Autodiaier Phone Line & Over the Air Command Modes. Virtually all functions may be turned On Off Remotely. Touch Tone Control of Timeout', 'Hang Time', Patch Timeout, TX Inhibit Reset, Patch & Reverse Patch inhibit Reset, P.L On Off (w optional P,L board), eta Up to 6 Auxiliary Functions. More yyith TTC300. Full 16 Digit Decoding with crystal Controlled Decoder ICj r Touch Tone Mute Unique Courtesy tone Kerchunk Killer

Sued

Ask me how it feels to be sued by multi-biltiorvdollar organizations. Tm getting to be an expert. Ten years ago AT& T was after me, and now it's CBS With large firms tike those, one never actually knows the real purpose of the suit. Several members of the press have called CBS to try to find out what's behind this latest attack on Wayne Green, but ail they get is either a no comment ort more often, no returned call. The suit has to do with my starting a magazine a few months ago called...

Accessories

HELICAL RESONATOR FILTERS available separately or pcb w connectors. HRF-144 for 143-150 MHz 38 HRF-220 for 213-233 MHz 38 HRF-432 for 420-450 MHz 48 COR -2 KIT With audio mixer, local speaker amplifier tail & time-out timers. Only S38, COR-3 KIT as above, but with courtesy beep. Only 58. CWID KITS 158 bits field programmable, clean audio* rugged ttl iogia Kit only S68 Control 2 separate on off functions with touchtonesV e.g., repeater and aulopatch Use with main or aux. receiver or with...

Am Help

Does anybody have information on how to build a ferrite-bead antenna Marvin Rosen N3BQA 20 W Madison Street Haiti more MD 21201 I need 211 (311, VT4C) tubes and meters from a B0375 transmitter. Robert S, McMullen NiFVN 24 W, 56 Terrace Kansas City MO 64113 Can anyone provide assistance or information in converting the HyGain 3750 to using the 6146 tube Also, I desperately need a 19-kHz crystal for the RCA stereo FM signal simulator model WR-52A. I will pay any reasonable price for the...

Antennas

D8-2M 1296-LY 1 XY-2M 70 cm MBM 48 70 tm MBM 88 LOW input 10W inpul M M L A LS IW or SW in Send 40< c stamps for fuil details of our VHF UHF items. Pre-selector filters Pre-amplifiers Antennas Low -p& SS fitters Transverterii Crystal Filters Varacior triplets Converters Spectrum International, Inc. Post Office Bo* 1084S Concord, Mass. 01742 USA If you already have a dish, then you need the best in satellite TV programming > 39.00 per yr. 52 weekly issues) Visa MasterCard accepted...

April

Dayton Directions Photo courtesy of John Wood WA4BPL 59 Barter Buy 59, 63 Ham Help 60 Special Eventa 62 Satellites 94 Dealer Directory 94 Propagation It's almost herel Take an inside peek at the what, when, and where of ham radio's biggest bash of the year with 73s annual Dayton Hamvention sneak preview WA48PI Stop settling for second-rate signals from OSCAR. You've really no excuse. W6IOJ's tow-noise preamp is easy to build and includes all the circuits necessary for alignment. So do it W6IOJ...

Armed Forces Day

The 36th annual Armed Forces Day will be held on Saturday, May 18, 1985, from 1400 to 2200 UTC, ARS W40DR, located at Maval Air Station Memphis, Mlllington TN, wifi be operated by active-duty, reserve, and retired sailors and Marines. Plans call for SSB operation on 7 230, 14.260, and 21.370 MHz i - 10 kHz). CW frequencies will be 21,145 and 28.145 MHz, 2-meter operation will be on 146.52 simplex. A special red, white, and blue certificate will be available to anyone who works W40DR, No SASE is...

Ateur Television

Is up to 95 shorter than whip antennas yet it gives you better radio communication and perfect tuning Low profile Untenna eliminates vehicle clearance problems Says goodbye to inter-mod exclusive narrow band width tunes out adjacent channel interference. Cives a perfect match anywhere on the band. Eliminates mobile flutter by its rigid construction. Offers a wide choice of models Standard and customized. Untenna is unequalled for mobile, portable, or fixed radios, 25 Imson St. Buffalo, N.Y....

Bearcat

260 16 eft mobile 201 i6-chantiei.Jaircf4 t 020 40-tn jircrjii 210XL Amslflur Software fof thff VJC 20 and Commodore 64 nr > ril(rno Conieit Lot) 10 95 29 95 SONY RECEIVERS Anlenoa Detlpn 9 95 Ii 95 20Q2 SWl, Receiver 209.95 Compter Morse 9 95 t2 95 4000 VYL Receiver B .00 Prcipagallon Chari 1095 95 76D0A SWL Recfliw i39.95 Super Log IV - 23.95

Bemjdji Mm

The Bemidji Amaleur Radio Club will hold its annual hamfest swapfest on Saturday, May 4. 1985, from 9 00 am lo 4 00 pm. at the Middie School cafeteria, Bemidji MN. Licensing exams witf be given. Talk-in on 146.13A.73, For more information, write TUBES 2,000 TYPES DISCOUNT PRICES New 24-pg. wholesale catalog forthe radio collector hobbiest Antique, hard-tofinc and modern lubes. Also transformer capacitors and parts for tube equipment, and books, etc. SEND it00 FOP 24 PAGE WHOLESALE CATALOG 1725...

Ble

Ml 1 41ri 3- CONDUCTOR * H JACK sync output. The divide-by-seven output from IC3 is applied to the vco input of the PLL, pin 3. The PLL control voltage is output on IC4 pin 13, This voltage drives network R31-R32-C7, which basically sets the dynamics of the loop R33 and C8 provide ripple filtering for the PLL control voltage, which is routed back to Q1, R34 and R35 provide a test voltage for tune-up purposes. Photo A will give you my opinion of a functional front-panel layout and Photo F some...

Cagen Contest

CaGen Software has released its new Contest Log program, designed for the Commodore 64 with disk drive and op tional printer. The CaGen Contest Log is a rapid-action, machine-language program that eliminates duplicate contest OSOs and prints permanent contest logs and dupe sheets. Because of its universal design, the pro gram can be used For all contest situations, allowing duplicate checks by callsign alone or by callsign, band, and mode. A single disk file wilt log and check up to 2500...

Call Long Distance On Your Handheld

The Model 335A will deliver 35 watts of power using the J test state-of-the-art circuitry, The amplifier will operate SSS or FM and is compatible with most handheld transceivers, including the TR2400, TR2500, C-2ATP Yaesu, Santec, and Ten-Tec. Only 300 mw input will deliver 5 watts out 3 watts in will deliver 35 watts out. Maximum input drive levet is 5 watts, Our products are backed by prompt factory service and technical assistance. To become familiar with our other fine products in the...

Code Training On The Apple

IUTORSOFT teaches Character, Word, Callsign, and QSO Phrase recognition. STATURES Randomized, Interac tive routines, Programmed Learning, Automated Menus, Automatic ing, Variable speed and pitch. CW- TUTORSOFT, diskette and Study Guide, SM dollars, postpaid. CM I ESTMASTER generates i CX Type QSO paragraph with 13 random, or user-programmable, variables, i.e. call sign, RST, QTH, rig, etc. Automated quiz scores user comprehension. O W. TESTMASTER, diskette and Study Guide, 30 dollars,...

Certified Communications

41 SOL- T H E H H.IS F RE MOM MICHIGAN 4941 Of all the modes that amateurs operate, the one which has seen one of the most dramatic usage increases in recent years Is RTTY (radioteletype). This upsurge In the popularity of RTTY can be correlated directly with advancements In both soiid-state technology and the microcomputer Industry, Many of the early microcomputer experimenters were also amateur-radio operators, so micros were in the ham shack before the microcomputer industry had even begun...

Computerized Oscilloscope

Rapid Systems has announced their Digital Osciffcscope Peripheral for IBM, Appler and Commodore personal computers. The peripheral simply plugs Into the personal computer, trie supplied disk slips in, and the personal computer becomes a digital oscilloscope, ready to go to work. Rapid Systems' new peripheral provides a powerful digital oscilloscope the personal computer provides intelligent control and analysis. The system is a 4-channel digital oscilloscope, with a 2-MHz sampling rate, 500-kHz...

Connect Systems Incorporated

23731 MADISON ST., TORRANCE, CA 90505 oseph i Carr K4IPV 5440 South f tb Ro d Arlington VA 22204 Here are the down-to-earth details you need to install a perfect ground system. Every book on long wire i or vertical antennas stresses the need for a good ground. If you have ever tried to make an endled longwire work without a good ground, then you understand why it is so important We are also told in countless books and articles that a good ground is necessary to prevent TVI and protect against...

Each

COM rAINS 6 SINGLE POLE NORMALLV OPEN SWl TCHES. MEASURES 4 V LONG RATED CONTROL- . R-1& VDC LOAO IZOVAC AMPS T.T.i COMPILE SfZE l11 X HIGH 3.50 EACH 10 FOR 32.00 SOI.DTR TYPE SUEJ WINJATU E CONNECTORS USED FOR COMPUTER HOOK UPS DB-i5FLUG 52.75 DB J& SOCKET 4.00 DB-15H0GD (1.50 06-25 PLUG (2.75 D8-25S0CKF.T 3,50 P 36 PIN MALE USED fe SP ON 'PARALLEL' TTT ,. DATA CABLES

Element Multiple Choice

One man with a dream was Stew Perry W1BB. His goal, which he achieved, was to 1) Work 100 countries on 160 meters 2) Fly a radio-controlled airplane 4) Accompany s DXpedition to XZ-land 2) Tim Chen BV2A BV2B. currently well-known to DXers, was 1) The first winner of the ARRL's Worked All Continents Award 2) The first licensed ham on Taiwan 3) The first ham to operate from an airplane 4 The first ham to operate from Kure Island 3) Father Moran 9N1MM Is the only licensed ham in 4) Bill Smith...

Engineering Consulting

583 CAIUDLEW OD ST., BftEA, CA 92621 (714) 671-2009 cost will be minimal class materials only. For more information, contact the 19-79 Amateur Rsdro Association, PO Box 171. Chelsea MA 02150. Please enclose your phone number You asked for one reason, one convinc ing reason why CW is the most efficient use of our crowded radio spectrum. To convince high schoolers, simply don't tell them about phone until after they're Novices then let the cat out of the bag. Japan's high-tech boom has cultural...

Equipment

KENWOOD 'JVfe itqc* tra pQNwOOO lino jO Q Tr-e new producn The TS fiiA 2 an mraa IMliA 7Dem aM moa and the IS-6 0 afl moae fcy ano 6 meferi These netw f> gs rnatcr, The 'S-JJC5 r-o motto beautiful oaaitions io any snaci We niw the new Jime nona eia ri s. ihe th iat ano TH41AT CALL FOP PRICES KENWOOD WL fi-2 0Q. (f DD L fo- O fclMl CALL KENWOOD IB-9303 QriO TS'43QS. ICOM 02AT VAE SU FT203R Mift AGE A MPS D NmON GLT10O0 1KW Ft luner COM R IA

Esc I Pll Digital Synthesizer

Inc., has announced the availability of a singleboard PLL digital frequency synthesizer The board is designed to be used with a microcomputer as the controller and tunes from 50-5.S MHz in 100 Hz steps. The plug-board construction has edge fingers which match with the well-known STD bus plnouts. The module Is one In a series which will be introduced to allow a complete intelligent HF synthesized station to be constructed by interconnecting the modules. For more...

Fcc Exams

Advanced registration only DEADLINE TO REGISTER March 27.1985. 4.00 check or money order made payable to ARRL VEC Completed 610 form with copy of license Indicate preferred sitting time Sat. 9 a.m Sat. 1 p.m., Sua 9 a.m. Mail registration to FCC Exams, 203 Bellewood St. Sponsored by The Dayton Amateur Radio Association, Inc. Piedmont Airlines Harnvention Special Fares Call 1-800-334-8644 for details and reservations. John C Reed W610I 770 La Buena Tierra Santa...

Fxk

Part P 300-11173 120Vac Type BNC Same FSN 5985-3-IS50 T RWS DOHrSTJC Prspiid, C- . Cradll Carti FOfltt PM pfBtuiil wly. U.a. Fundi. Marwy Of u. or CmIiKw'i Chuck Onty C.O.P. JUii Tt)rJbt M pr Anil PaymEPf firm cu tom f Hl Eh b* CAIh. Moniy Of Jan, or Cismars Owe*. We ara warjy KfiipptO by J.r Only nrt rru UrtHlfltl PfifCfit SwVICj . but WtfR ehacu tor C.O .s G.O.D 's CWFIPkHHQ ** HjU thir DnflFfnin o en on c AHCfi m mm no- .m iaast hgahd. VLSJ . AND AMI CX HESS B*TA SHEETS' MA 1 hi III oft...

General Information

Hamvention information (513> 433-7720 Flea-Market Hotline 513)-223-0923 Flea-market setup day Thursday, April 25* Registration tickets and flea-market permits must be shown together for admission to the flea market. Deadline for ordering tickets and flea-market permits-April 12. Prices registration tickets in advance 8.00, at door 10.00 fiea-market spaces 17.00 alternative activities 6.00 banquet tickets in advance 14.00, at door 16,00, TaIMn Frequencies 146.94, DARA repeater. Other...

H

All resistors comp, or film (non-inductive). Fuse is thin copper strand from zip cord, 7 2 to 3 4 long. Connect SO-239 connectors with RC-8 center conductor wire. Keep BNC connector 3 away from SO-239s space resistor sets 3 8 apart Test run sampler at full power before connecting to scope. Maximum power 2 kW PEP 1 kW CW. Maximum vswr 2 1,

Pae

ASCII, this bit svnc occurs naturalh u itli each stop bit, But with the synchronous ARQ code as used in AMTOR. which has no start stop bit, a very sophisticated decoding algorithm is required so that minor Iimint differences between two terminals can he quickly compensated for. W ithout this, synchronous < ode operation is eventual ) lost as the two T dictai communications technique oi continually adjusting un internat clock to match the received signals bit rate. clocks lose' each other. Our...

Haltronix Dayton Specials

IBEXEiiDEiiffln nnn ffin c tKEB sniniCB (CEJ3l lE 11ffiflt9IW6 t> > tv at last a very affordable compute polnefiffcfc fliliy pfiogram ma bl with 3k OF mf morv - porta B JE k 1-3 inch module single* ey entrv comma nds--ixjra& le 40 ke ' membrane i*pe ke*board zbga based four chif* design idlfcatiohai unique syntax-chech report codes fop e*r0r identirr-gkaph draw'hg and animated display-accurate to t s (jeclmal puces oh fulj. range math ahu scientific funchdne an affordable phice WE CANNOT...

Ham Data Programs For Commodore Computers

Some ham shacks are neat and orderly, but I have a suspicion that many of rhem aro like mine an unfinished project here, a piece ot coax there. Somewhere buried In the rubble is a Logbook, You rernerry ber It's one o those things you used to be required by law to keep This haphazard approach to ham life la OK. at least until you decide you want to enter a contest or work toward one or more awards. Then if time to drag out the paper and pen, perhaps a tew shoe-boxes for the QSU and make a...

Hardline

Two styles, two sizes for all installation needs * Aluminum OuW Conducioi Willi Palv rhytene Jachel V2 inch loss .48 tJ8 100 l 30 MH 3.& K dfi 100 It. 1000 MHz V25 tl. 7 8 inch loss .28 dB 1Q0 I w. 3Q MHz Corrugated Cup par Qui or Conductor with Polyethylene Jacket Inch loss MdBHOQtt & 30 MHz jfLCl2 5QJ) 2 70 d8 100 fl 1000 MH SI 59 fl 7 9 fnch loss 13 Ufc lOO ft. m 30 MH (FLC12-7& J) 13 dBMOO ft ft 1000 MHz S3 92 U COMPARE Rfi 213 1 25 itB 100 & 30 MHz

Heads In The Sand

The other ev r-ng, as I was listening to a repeater. I wo pieces of information cropped up The first was a rvotice of a possible renewal of ihe attack on 20 MHz and the second was about the 30-kHz two-meter repeater spacing which seems looe creeping across the country. Do you know which of the two elicited the most comment The two meter band plan, or course The Operators on this repeater reflected a liesd-in i he-sand attitude which isn't uncommon, but which is hard lo under-siand In ihto dfiy...

Highperformance Receiver Modules

O.i 5uV sens. 8 pofe xtal filter S ceramic filter in H helical resonator front end for exceptional selectivity, more than -100 dBat 12 kHz. best available today. Flutter-proof squeich. AFC tracks drifting xmtrs. Xtal oven avail. Kit only S138. R451 FM RCVR Same but tor uhf.Tuned line front end, 0.3 uV sens Kit only 138. R76 FM RCVR for 10M+ 6Mt 2Mt 220. or commercial bands. As above, but w oAFC or hef. res. Kits onty S118. Also avait w 4 pole filter, only 98...

Hints

Secure room reservations for the nights of April 26 and 27, and if you plan to arrive on Thursday, include the night of April 25 in your reservations. Get the group together so you'll know who plans to got then you can figure on how many cars you'll need to make the Save money by ordering your registration tickets in advance. and at the same time order your flea-marfcet permits, if Talk to the boss and arrange for tine off on the appropriate dates April 26 plus any days needed for travel, Save...

Hot

Ac hievt 1 or 2 db gam over ANY wave (wo rnerei telescopic int nria The AEA model Hfl-i Hoi Rod'* antenna was designed r. O- DK Reynolds (designer of I in e t < F i1 to deliver ** a * i m u rrs performance ' r any hana-he-'.j transc eiver with a BNC fitting Tne facictry-tuned Hft 1 s 20 shorter h jnter ant piai.es far Jess ress on your hand-held connector and case It wnl easily handle over 25 watts of power making H an excellent emergency base or mobile antenna In ihe collapsed position, the...

Hustler

6 0TV 0 BOm Vertical ttii 30m 124 95 5 & TV10 SSOm VefTical 104 95 wmiltftfSOHAT RSStanstanl Suiws HY*GA1N (hmitea Stockt 391S 1H7DX 7-t * 10-15-r'Om 446.95 393S TH5DX 5 ele 0 15 20m 386.95 335S t.xplorcr 14 304 95 Ortfet Hy Gtintoww, Hy-Gain antenna t & Hy-Gain rotor Qtu loin stopping on all

Tm

See your favorite amateur dealer or write for a free amateur catalog. IN USA Lflrsen teCMOnteS Inc T1611 N 5QH1 We. PO Bo* 1799 Vancouver WA 986tifi LARSEN* K LROD AND KULDUCKIE* ARE REGISTERED TRADEMARKS OF LARSEN ELECTRONICS INC IN CANADA C ir> uli-n Larsen Electronics I tc 149 Wffl fn Av 'vincfluvrT' BC V5Y 1K3 6CW 872 85t7 Photo C. Construction detail of the L-pad sampler. Although simple, build the L-pad carefully since it handles high power

Wqz

Yes, now you can take it with you The new HAL CWR-6850 Telereader is the smallest RTTY and CW terminal available, comelqte ifliflRT display screen. Stay active while traveling the CWR-6850 site na CW friends even Titstand ir features of Pretype up tb 15 Iiri s of text External keyboard mcl Runs on +12 VDC fi Small size (12.75 x fx TT5ff) Write or call for more details. See the CWR-6850 at your favorite HAL dealer.

In Stock Over Items Complete Ones

Program On Auto-Start Cartridge 100 Machine Language Completely Programmable With DTMF Commands > Simple Interface To Your Repeater. Schematic Included Full-Screen Status Indicators And Keyboard For Local Control Autopatch Includes Reverse Patch And Toll Restrict 3 Selectable CW IDs. One Is User Programmable And Connections To Phone Patch JfiBSffi 614-882-8965 Or Send Check Or Money Order to SC IE UFK f STRL MI TCE Ti R INC 134 Graphic Way WestervilleOhio 43081 Si tp siv Compute' And CW iD...

Inc

925 Sherwood Dr., Box 247 Lake luff, IL 60044, USA 925 Sherwood Dr., Box 247 Lake luff, IL 60044, USA DX-1 determines MUF FOT, Creyline, distance Azimuth, Sunrise Sunset plus 433 country database OX-2 determines MUFiFOTT dLsiame Azimuth, Sunrise Sunset plus 433 country database Refer to 73 Magazine, September 84 Issue, page and Ham Radio Magazine, August 54 issue, page 81. DX-1____S42.45 s h incL CA res. add 2.fifl DX-2 _____ 22.45 s h incL CA res. add SI 30 DX Enterprises 5861 Bridle Way San...

Inic Test Gear

Un*--HMiKl uuJWy JH munt int TWPt*. flifluw rnttfo- OH scopt competc* u> atfwrt co ing hufrfrefe kw Fiaiitfes incHida 1 j tircLiiT*PF TV11 ' capecit i ig n iE Ccuii M V V taabng TV vxfeo tync Mi*f * **de tjand*vxtti & htgfc a H5r **** on 1. * ii * ft .-'lf.a triaci jI Zurs * n< gn pnjb neMJed st-nt - < > i, . r mod i ji*t fpowv iupptv * t**at-ir ca D rot* tc*4 figgif- , , uSa_A< M VHU par onli tor Ortraeea ort** hM t*K Ol tfltal Prtir toi Imurad Surf MaH

Is All You Ever Need For Effective Battery Management

ARE YOU EXPERIENCING BATTERY PROBLEMS WITH YOUR PORTABLE RADIOS DO YOU REPLACE YOUR BATTERIES IN LESS THAN 3 YEARS DO YOU CHARGE YOUR BATTERIES EVERY DAY DO YOU LET YOUR RADIO GO DEAD BEFORE RECHARGING IF YOU ANSWERED YESf TO ANY OR ALL OF THE ABOVE QUES T ONS, YOU NEED THE BATTERY EXERCISER REGULAR EXERCISING OF YOUR BATTERIES EXTENDS THEIR LIFE. PREVENTS EXCESSIVE CAPACITY LOSS FROM OVERCHARGING, AND REMOVES THE MEMORY EFFECT The EXERCISER tits inside your charger onfy 3 soki r connections...

Israel

Negev Mobile Post Office 85530 Israel The lowest spot on the face of the Earth Is the Dead Sea, 394 meters (Yv mile) below sea level. From the north, the Jordan River drains into 11, and from all other sides It receives the winter runoff from the wadls (dry river beds of the surrounding desert. ltJs 76 kilometers (48 miles) long and 18 kilometers 11 miies) at its widest spot. Due to the great evaporation and continual Inflow of water, its sail content is 25 percent of its water by volume, which...

L

Remote Programming of 3 Timers for 2 different timing cycles, or No Time Out Microprocessor Memory J Battery Backup' Autopatch AGO for constant levels Local Status Indication via 12 Function panel LED Display Front Panel Touchtone Pad for Local Control NEW Improved Rcvr, UHF Xmtr, Power Supply Fut Panel Metering Rcvr & Xmtr functions plus c SC200X Controller & Interface Boards also available ) Unusually massive deep fin'1 heat sink lor cool operation & Jong life. Allows much higher...

Jl

Drake ESR 240 System Drake ESR 324 System Luxor Mark II System Dexcel 1200-01 System Dexcel 9 0-01 System Little Wil by Wilson Boman SR1500 System 1133 Sigma Mark 5 BL Sys. STS MBS-SR System PM 9* Dish 60 PM 10' Dish 140 Proitelin 10' Dish 400 Banger 11' Mesh Dish 300 Magnum 12' Dish 400 NSS Memory Tracker 100 Houston Tracker IV 325 Houston Tracker IV + 425 Photo F. Interior layout of the two-tone generator. Construction is quick and simple. the L-pad sampler and f'hoto C provides a view of the...

Cbb

Our TE-12P Encoder might be just the solution to pull you out of a sticky situation. Need a different CTCSS tone for each channel in a multi channel Public Safety System How about customer access to multiple re* peater sites on the same channel Or use it to generate any of the twelve tones for EMS use. Also, it can be used to access Amateur repeaters or just as a piece of ver satile test equipment. Any of the CTCSS tones may be accessed with the TE-12PA, any of the audible frequencies with the...

Kearney Ne

The Midway ARC of Kearney, Nebraska, will hold its Bth annual ARRL Spring Convention gn March 30-31, 1985, at the Holiday Ina Kearney NE The Friday-night pre activity will be Ihe North American Tele conference Radio Network Jive from ihe Holidome. During the weekend there will be symposia en AMSAT. packet radio, and frequency coordination and RR. There will be alternate activities for non-hams, There will be a banquet, f our Keys mo sic. ven triloquism Qeivin B. Bump's humor, and more For more...

M

Si V-1 ti, i f-iiii1 11 ' v 1 . - 7K IfT -, ' r .-JI- -v-v . - 7K IfT -, ' r .-JI- -v-v . ShackMaster puts your home station in the palm of your hand. Whether portable, mobile, around the yard or around town you'll be linked through your handheld to your high performance equipment at home. Even call home from any Touch-Tone phone and operate Scan the bands, change modes, select antennas, turn gear on and off - all from your Touch-Tone keypad. Check into nets, work skeds, ragchew and DX without...

Licensing

Unlike many administrative licensing systems where the requirements are solely based upon Ihe knowledge of Morse code (CW) and electronic theory, ihe qualifications lor becoming an operator are not based on ihe above-mentioned standards only. In fact, Montserrat, being a 391 -square-mile British Colony, has only two classes of licenses, A and B but because of ihe taci ihat each resident con. siders himself to be an ambassador ot his country on an international level isome might not realize...

Made In

* Covers 100 MHz to 199.999 MHz in I kHz steps with thumbwheel dial * Accuracy I 1 paft per 10 million at all frequencies * Internal FM adjustable from 0 to 100 kHz al a 1 kHz raie * External FM input accepts tones or voice Spurs and noise at least 60 dB below carrier * Output adjustable from 5-500 mV at 50 Ohms * Operates on 12 Vdc < > Y Amp * Available for immediate delivery 29,95 delivered * Add on accessories available to extend freq range, add in Finite resolution, AMH and a precision...

Magnet Mounts

For HT owners operating inside a vehicle and want* Ing increased T R range, BF PRODUCTS has the low cost solution. Remove your BNC antenna from the HT and mount on the RF PRODUCTS BNC magnet mount. Install the magnet mount on the roof top and connect the BNC co-ax connector. The magnet mount (part no. 199-445) has 10 feet of small (5 32 *) co-ax with SNC conector attached, PRICE 15,95 M.O. or cashiers cfc.t via UPS grid, Fla residents add 5 tax, for air UPS add S3.25 The RF PRODUCTS Magnet...

Meter Mobile

4 MEMORYS - 3 WAY AUTO SCAN, DUAL VFO, IF SHIFT, CW-Wr 400 Hz. CW N 200 Hz. ALL 9 BANDS PLUS MARS BUILT IN AC DC POWER. SSB. CW OR RTTY. I F. TUNE 3-STEP TUNING SPEED, 200 WATT PEP, MICROPHONE IMPEDANCE 60Q-50K OHM HAND MIC, INCLUDED. WITH THE QUALITY YOU HAVE ALWAYS LOOKED FOR 40,15 AND 6 METERS ARE YOUR BASE STATION OR MOBILE WITH AC DC BUILT IN POWER SUPPLY CW-N 200 Hz OR USB, 2,S0239 ANTENNA CONNECTORS, HAND MIC. BUILT IN TVI FILTER LITTLE TO NO TV INTERFERENCE, 20 WATTS PEP, MARS ON 40 AND...

Mhz Microwave Downconverter

* Model BP + . . , 495 (25 miles) Send check or money order to K& S ENTERPRISES Box 741 dramailc a difference, but (he difference hi be real, nevertheless. The terminator can give you that extra edge you need Iq make contacts when others can't. The terminator works both ways, Not only do you enjoy ennartced radio propa gallon at local sunrise and sunset, but so, too, does the DX station. His signal strength wril increase at your location wften it is sunrise Of sunset at his QTH This means...

Micro Tu

The most cost effective terminal unit available for getting started on RTTY. Tiits n w updated versiEHi at the lely sit4ktie prayain bt XG3V A goodUaner program lor new rtty mei Kil includes PC board, lull documentation and all parti (except case and power supply Easy hookup and calibration Hetijives from speaker audio FSK and microphone AFSK outputs Stmd check ur money order to Zeltwanger Electronics Cl.ua DISCOUNTS AVAILABLE Lit ALE R INQUIRIES INVITED Write loi further d faits ftilil S2 00...

Mm

IJHI S 1.50 15,00 12.25 12.25 22.21 7. 50 13.08 13.00 45.00 13,30 45,00 10.00 30.00 92,70 57.00 2.50 20.00 20,00 10,00 18,00 24.00 1.6,00 92.70 95.00 26,30 152.95 20.00 27,90 56.90 30.O 42.00 55.00 70.00 20,00 25,00 22.00 19.00 14.00 47.00 12.00 24.00 24.00 35,00 20.00 16,00 58.00 25,00 25.00 2,50 4.95 11,40 30,00 10,00 19.90 25.00 11,34 10.00 112.00 38.00 32.00 32.00 30.00 50.00 50.00 75.00 44.00 44.00 7.00 31,00 68.00 31.00 33,00 1,00 10.00 25,00 24,00 25.00 25.00 13,75 All parts may be new...

Mimqhy

PL reauencies The 'A 37A 47A come cor - The ICOM compacts measure only 5 WW x x TD (IC-37A is 9 deep ., which allows them to be mounted in various compact locations Yet the compacts have large operating knobs which are easy to use in the mobile environment The IC-27A 37A 47A provide superb performance in channeL.and the See th ipeed is adjustable dealer tftt limiting tpurious ernttvom MOBfLESlW iCOM America, inc., 2380-1 f 6 th Ave NE, Beifevue, WA 98004 3331 T. IMW jtpi< j ujt ect to ctmnge...

Movin

Let us know 8 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. it helps us serve you promptly. Write to Extend my subscription one additional year for only 19.97 I Payment enclosed I Bill mc Cjnadd anil Mexico 22,97fl > r. Only US funds drat*n on US Foreign Suriste 519,97M yr, only US funds drawn on US hank. FureiRn Airmail...

New Lownoise Preamps Receiving Converters Transmit Converters

No Need to Pay 80 to 125 for a GaAs FET Preamp, Hamtronics Breaks the Price Barrier No Need to Pay 80 to 125 for a GaAs FET Preamp, Very Low Noise 0,7 dB VHP, 0.6 dB UHF High Gain 18to 28 dB, Depending on Freq. Wide Dynamic Range for Overbad Resistance Latest Dual-gate GaAs FET, Stable Over Wide Range of Conditions Ruggedh Diode-protected Transistors Easy to Tune Operates on Standard 12 to 14 Vdc Supply Can be Tower Mounted

New President Of Labre

For about two years, Valmir Jacinto Pereira PT2FA was the president of the Brazilian Amateur Radio League (LABRE) During the time he commanded the League, Valmir gave his best efforts to es-tabtish reciprocal agreements with the leagues of almost all foreign countries. Most of them accepted his offer, and a few agreements were signed. Due to his excellent administration, PT2FA received from the Brazilian government the Merit of the Communications Medal On September 25, a new president was...

News From Amsat Rrael

The Israeli chapter of AMSAT has been officially formed and meets on Sunday evenings once every two weeks at the Tel Aviv University. In the same building that houses 4XGTU, the beacon that appears on the International Beacon Frequency of 14.100 MHz once every ten minutes. The -Hms ol the chapter are to propagate information about the use of amateur satellites. to establish a club station for the use of its imemt> ers to work through the birds, and hopefully lo lake pan in the construction ol...

Nicating Take Control

PRIVATE PATCH II allows communications to proceed back and forth as rapidly as on a telephone. There is no waiting for sampling circuits to acquire each time the mobile transmits, The PR VATE PATCH II VOX system offers a substantial improvement over sampling autopatches in time spent wailing for control EXAMPLE Suppose you made 10 phone calls 9 completed, 1 busy assume the completed calls average 20 talk exchanges each, 180 total. You would spend 360 seconds (6 minutes ) waiting for control if...

Non Linear Systems Pocketsize Multimeter

The AP-105 Digital Multimeter Is a low-cost, 3'A-digit multimeter thai can fee used ust about anywhere electrical measurement is needed. Besides ac and dc voltage measurement, the AP-105 incorporates seven additional functions includ ing dc current, conductance, resistance, NPN and PNP transistor, diode, and battery test. A single, convenient rotary switch selects on-off power, function, and 23 different ranges The AP-105 measures 2.& T x 0.9' and weighs only seven ounces. It also uses a...

Omq Digital Multimeter Ps Audio Multiplier

PT iirsippnaJ Oui-.Tf it a noooyctt pfict Ft iura* include M dttlafvnl range* and 5 tunc-i> ons SU M HHH nah damai p+acem fii - aulefrjSc p anty . > g.F Ten LEDd' f ay * I tlb* i p4ec < ne s- -ar'j,- for r Q ui on aodio -it jl'DTi easur 'e rs t plies uP h firt-quencr * great for PL lone measurement* it uM L. ei - 0 or lOQ * t> f S a 9 diLjii counter ihai win putpcrrorm m ta cd i-lug hundrads muH- * gjii-- irn icatoi ' JniV fni ISO WHf typicnl senitli ity p diflil display * i ppm...

Packet Radio

USA AX.25 is the AMRAD approved digital format STANDARD used on amateur packet radio networks. System Tested 4.5 x 6 board compfete with all IC s and programmed EPROMs personalized for each purchaser Re quires only single 8-10 volt V amp power. 1 year guarantee of hard ware soft-ware AX.25 standard RS232 serial ASCII at any user baud rate.RS232 HDLC for 202 modem used for AFSK or direct to RF equipment for FSK. Assem bled Test ed. N o I Cs. 90 day warranty

Patent Pending

Ouontv Communicottan Products S nco 193 Ar v ur .JlitribLTfo w Ttd or coi _ Combine a regulated power supply with a lightweight rechargeable battery. Add a smart control system. lack Ceist N3BEK 2205 Henderson Avenue Silver Spring M 20902 The general availability of small, lightweight, solid-state transceivers has made truly portable ham-radio operation possible, What is needed to complete the pic ture is a lightweight compact, easy-to-handle twelve-volt power source that can be plugged into...

Pecial Events

Ltf in tt) & COfumn Ate tree ot charge on a spac& a& 'i bie tesis. The totion r.g Tiiofmaifon shoufd* be inciu ed in every announcement sponsor* ewnf. date, time, ptece. crty, aiere, admission (if any I textures laik-in ftoquetK.-es, and the name of whom to contact or turthe< information. Announcements must be received y 73 Magazine by the ttrst of the month, two month* phor to the month in which the event takes place Mart to Editoti& i Offices, 73 Ma -azJrw. P< n* St.,...

Polyethylene Dielectric

RG-e U Shield Mil Spec . (S50 00 100) ut 3W1I HG11U 96* stiieid 75 ohm mil sp c 25W, RG-55B U double shield (RG-5S st7P> i0 ohm RG58U mil spec 96 shield ( 10,00 100 or 11VTI. RG62A U 96 Shield mil sp c 93 ohm tZ* fl RG174 Uinin 50 U mil spec . 1CN11 RG213 rcinctjnlflminaririq 96 shiuld mil spfic 36( 1l RG214AJ doLhfe silver sliield 50 ohm V fivn RG214 U tinrred capper . --'II K f- I h IftH 1 J RG217 U doubte shield SOii 5 S,r 0D Wft

Private Earth

7T7 Q Start my no-risk subscription today and send me 12 issues I -CO of 73 for 19.97. Ill save 33 off the newsstand price CHECK MO Bill Me EO a possibility of ice, snow, and even wind warnings on area lakes. So be a good scout and be prepared for dressing with the changeable weather in mind. Start with a short-sleeved shirt and a jacket, and if it gets warm, you can trim down to a T-shirt. But keep the heavy coat and long underwear nearby in case the mercury goes the other way, and always be...

R

Marc i Leavey, M,a WA3AJR 6 Jenny Lane Pikesvifte MD 21208 Somebody asked me the other day, Just what do you cover in 'RTTV Loop' Short of the obvious answer, radloteietype, I paused for a moment. The view I have had of lhis column, and I hope you have, too, Is that we look at the whole spectrum of digital communication over amateur radio. This month, In fact, we shall see two different facets of the picture. A Tew months ago, we discussed AM-Toil, the RTTY technique which allows error checking...

Rf Down Converter

BandsMAIN (to cover 26-520 MHz with SX-400) - 500 - 600MHz -600 700 MHz * 700 -800MHz AUTO (Automatic control of RF-5080 with an external computer, etc.) Frequencies shown in SX-400 display 300MHz lower between 500--600MHz, 400MHz lower between 600700MHz, 500MHz lower between 700-800MHz. Individual Band Switches and LED fndicaters. Curreni Drain 5QrnA (approx.j Accessories 1 BIMC M-adapter, 1 Cable with BNC terminals. Dimeft& ions W. SxH.51x D. 225(mm)

S

a 95 ea 10 545.00 1.96 ea., tw ie.0 55,95 EA. SEE US AT DAYTON-BOOTH 9, OR IN OUR OUTSIDE SPACE NEAR THE BACK DOOR skipping information. ohuehs ovhr 125 wtll se shipped j ost-paitj e cept on items where aewmonal charges arf requesttdotj oflders less than please ihclude addition al ej for handling ano mailing charges mihhigan his ide uts aod W* SAles ta*. send 3h stamp oa sase fob free flyer ca apian ohofhk . p r< )staa t H u.s. funds. P.O. BOX 1101 DEPT. N SOUTHGATE, MICH. 48195 PHONE (313)...

Sandwich Il

The Kishwaukee Amateur Radio Ctub will hold Its annual hamfest on Sunday, May 5, 1965, at the DeKalb County Fairgrounds, on Suydam Road just north of Route 34, between Routes 23 and 47. Ad- mission is 2.00 in advance and 3,00 at the gate. Inside display tables are 5.00 each. All parking is free and mere will be outsEde areas for tailgating. Overnight camping will be available (no hookups). Food will afso be available. Talk-in on 146.94 and 146,13 .73, For more information or for tickets, write...

Saturation

Thinking of all the fancy and expensive communication equipment found In many amateur-radio shacks In this country, I consider German hams rather wealthy. Only a minority of them, however, are technology-oriented and still experimenting, The rest are more consumption-oriented, and with the present state of the art, the technological means for reliable and easy communication are within reach of the average German radio amateur today, it Is not surprising, therefore, that the enthusiasm for...

See You At Dayton

Now you can get in on the fun on packet radio Redely id opaiiite- wttfld & tested -LOW COST tasy ID learn ua y ra use M tn packet Modem Use Will1, computer*, terminals leietvpg machines RS23 Hfial mlcTface- ib lo 9GQD baud Uses coin ASCII and Baudot Ppn.jurpimed l( f noth AX 25 ft YADC '1 -WO Or 6liQ 03ud Automatically fc rii es pi ctoco ol incoming fnessapes Over 60 tornmards CuElom call fllQft dpi i on Sltti received message* uniii 'equaled ai a later n Slotf tnd lr wp* lsnl m to...

Slab

Deta 7s of the flashing and copper plate unction. paste flux, Warning use only solid solder with resin paste or a heavy grade of resin-core solder. Some plumber's solder or paste is acid based, and that is a super no-no Acid-core solder, or acid-based soldering flux, will corrode the joints. The connection to ground consists of one 8-foot ground rod and four with two weekends of hard work) into hard Virginia red-day soil These rods are connected in parallel with each other at the 1...

Special Phefix

To celebrate the 50th anniversary of the University of Sao Paulo, a few PY2 stations were active during the second weekend of October, 19& 4, using the call ZY2AA, A special commemorative GSL will be sent confirming the QSO. The GSL information is PO Box 22, 01000 Sao Paulo, SP, Brazil WWSA-WORLDWIOE (CW> SOUTH AMERICA CONTEST Sponsored by Grupo Editorial Antenna, from 1500 UTC June fi until 1500 UTC June 9, 1965, CW only, from 10 to 80 meters. Work stations once per band. No cross-band...

Spectrum Communications

S4 * Norristown, PA 19403 (215) 631-1710 * Telex 846-211 73 for Radio Amateurs April. 1985 imide exh btfs were popular with the 1984 crowd. This was just one of three large arena areas set aside for the over 200 dealers. As soon as the doors opened on Hamvention 1984, the Hard Arena was filled with busy shoppers looking for that certain piece of dream equipment tend. That is no easy task considering that almost every topic related to ham radio is touched upon during...

Sx

Wider Coverage (100 KHz -1.4GHz or above) with RF converters (optional). Computer controlled memory channel expansion (unlimited), High-Speed reorogramming. Record of Frequencies and Time, and all functions remote controllable with RC-4000 Interface (optional). 20 memory channels, Momentary ecail of any memory channel. Continuous normal and limit search without interruptions by birdies. Stop Mode Switch for scan or search of modulated signals. Quick search of The most important frequency with...

T

Multi-function all-mode 2 m and 70 cm transceivers. The T3-711A 2 m (142-U9 MHz) and 3-81K 70 cm (430- 50 all mndetransceirs 3-e periect base stSlior units, designed to complement your rtesenE HF sta Etaift feature Kenwood's innovative D C S. ariruiffy Built-digital VFO's provide commercial-grade frequency stability through the of a TCX 0 Temperaiu e Compensated Crystal Oscillator The new fluorescent mulii-funcnc n disria - snows frequency, RIT shift. VFO A B. SPLrr, ALERT, repeater offseL code...

The Answers

1 1 He was awarded 160-meter DXCC No. 1. 2 2 He uses BV2A on CW, BV2B on phone. To the gratitude of DXers everywhere. 4 2 Project Moonbeam they called ii in 1953. 2 True Easy to build hut hard to maintain. 3 True A helpful contribution to the hobby. 4 True An obvious question, but we couldn't leave this important first out of the coiumn. 5 False British hams do nol have access to 6 meters. 6 True The first of many to find a comfortable niche in the Mart-ford Connecticut, area. 7 True And he was...

The Problem Solver

The RF Wattmeter Model 81000-A from Coaxial Dynamics, Inc. does more than provide accurate rf measurements. Testing of transmission lines, antennas, connectors, filters and related components can reveal unknown problems and assure optimum equipment performance. The 81000-AK Waitkit features this easy-to-read RF Wattmeter (pictured here), with its optional carrying case and an array of elements and J I accessories. Coaxial Dyna cs dements can be 11 Wtmg I purchased separately for I 11 llw I...

The Terminator Is Coming

Looking for something to brag about at the DX gathering Tired ol working Clippenon again Try the terminator Neh the Gnm Fi.iper nor the lite *bats t a ihe end your coax. the terminator is the imaginary line between sunlight and darkness twilighi Right at sunrise and sunset, radio propagation often Improves dramatically, in these days of less-than ideal sunspors, every llltie advantage helps, so perhaps it's lime you started working with the terminaior. The terminator, or gray line passes your...

The

Our early Australian amateur-radio experimenters. with great foresight, knowing that the best way to expand knowledge in any particular field of endeavor is by sharing with others of similar vocation (heir thoughts and ideas, soon realized that some national forum was needed. With this In mind, they founded the Wireless Institute of Australia, the doyen of National Radio Societies, Founded In 1910. the WiA Is easily the oldest national radio club in existence, with the RSGB (1913) and ARRL...

Usa

HF6V Cci inilt'T 'ly .lutorrmhc tianrt& wiTcrkmg 0 t*wc -V 'Oplus -i > IT . ' Ot.tpt-rf -nhaU-l O 5 t n trap verticals o como*i-il SLH* Thousands usfe Offcfc xifi ry < < Bl< 1 SO mei& t Qpnnavml bte noy- rp-rrjTit fc-T-, h.,r 'irr-ijniiig uVAfiC L-.' -_ti coring wett Hp atii 26 m. S n otent, ml re Li vd n TUM' vr-ii-Li ere. MoUfi2MC Trortx-x- - O chr t> u COUiriimf jain wenicnl I T 2 mwtr * * w.- the scanne gam as double-S** lypc patented tromfceme t 1 iSiruQSe T I - -h ' L ''...

Using The Ao Apogee Predictions

Apogee predictions tor the month ot April are provided for three sections of the United States Washington DC at 39N 77W, Kansas at 39N 95W, and California at 38M 122W. Times are in UTC and apogee in this case is mean anomaly 123 rounded to the nearest whole hour Use the chart as a guide in aiming your antenna, then fine-tune the azimuth and elevation values to peak the satellite's beacon signal. If you require more accurate orbital predictions, contact AM SAT at PO Box 27, Washington DC 20044....

Why Land Mobile Professionals Avoid Sampling

The majority of radios on the market (especially synthesized and relay switched types) do not T R quickly enough to give accep table results. Often engineering level modifications are required to improve T R response time- The slower the T R response time, the longer the sample must last. And of course no telephone audio is heard during the sam-pfe+ Just noise. The result is lost words and syllables which are proportional to T R response. Acquiring and maintaining control (in order to...