Comet Monoband

' MODERN, MULTI-BAND ANTENNA SYSTEMS PRODUCTS l SSSP Featuring the COMET exclusive SLC System The SLC actually increases the gain of the Dual TriBand Antennas. A completely preformed phasing coil and phosphorous copper element produces a low-loss, highly effective high gain antenna, All COMET antennas are pre-tuned and come complete will all mounting hardware. Simply mount to your mast and experience incredible COMET performance 32P-15 Tri-Band 52 146 446MHz Base Repeater Antenna Gain & ave...

Constant Rea Ctance

Construction of the Smith chart a) constant resistance circles h) partial circles of constant reactance c) radial scales d) completed Smith chart. Modified after Fisk, 1970, The radial dummy is built in a similar manner, except that ihe RF connector is boiled directly to the ground plate, with the center conductor soldered to the back plate with a pieec of large (less inductance) hookup wire (Figure 2b . Twenty Ik resistors arc arranged around a 1-1 2 circle. As with the DIP dummy, it...

Cross Needle Meters

* Separate Meter and RF Sensor allows for convenient placement of the meter. * Cross Needle Meter provides FWD REF, and VSWR simultaneously. - The RF-Sensor is a compact design, and has an extremely low-loss circuit. * Beautifully illuminated when ___ connected to power supply. CMX-1 CMX-2 CMX-3 * 6 foot cable standard. i.b-bomkz i.8-2qdmhz i4o-52& mhz - Optional EKS-310 foot extension cabfe tor a total of lo oo 16 feet between the sensor - and meter. - Compact Size ( 475 x (W) 1.75 x (H)...

Custom Madehand Tooled

Lealher products with your initials, name, call letters. Photo's S estimates available Key rings, wallets, belts, purses, hanging signs, specialty items. GREAT GIFT, LEATHER & WEST, 67 Causeway Rd.( West Swanzey NH 03469. (603)352 6256. 9-4 pmT M-F ET. BNB215 SUPERFAST MORSE CODE SU-PEREASY. Subliminal cassette, 12. LEARN MORSE CODE IN 1 HOUR, Amazing supereasy technique. 12 boin S30 Moneyback guarantee. Free Catalog SASE BAHR-T4, 150 Greenfield, Bioomtngdale IL 60106, BNB221 OVER 500...

Departments

The Kendraboard provides PC-free frequency A Novei Dual-Band, Single Feedline, VHF UHF Antenna Good performance for less than a A 4QW, 50 ohm RF dummy load with a VSWR of 1.3 1 at 500 MHz .VE5ZE Tfie Coleman (Mini)-Kilowatt Extend your station's working range for next to nothing WB2WIK 6 Shift your tuning into high

Drt

The Alinco UR-12QGT, 2m dala radio is en r-eered 10 optimize packet radio performance and operating convenience into 1 compact package. 25w RF output 1u 400bps utility. 14 memory channel, 4 scanning modes, and other excellent features are provided at an economical price. The DF 1200T is the smartest way to connect you and packet radio. designed to work at m ' ' Alinco is very pleased to introduce the newest addiiion to our quality lino of amateur radio transceivers, the DFM30T 2 meter mobile....

Electrosoft

Electrosofl has introduced a program to control the Yaesu FT-990 transceiver The program works on any PC or cumpalible equipped with a serial port and requires the FIF-232C interface circuil supplied by Yaesu. The Electrosoft program reads the frequency, bandwidth, and mode for both VFOs and for 90 memory channels. then stores the data in a computer file. You can store an unlimited number of channel files. The program can read any previously saved file and reset the frequencies, bandwidths,...

Enterprises

Power Required 12 to 14 VDC S00 mA 120 VAC adaptor ind. Audio Power Output 2.5 W 10 THD (8 ohms) Audio Selectivity Peak notch 30 dB or greater, 0.3-6 kHz Squelch Hold 0-10 seconds Noise Limiter Adjustable-threshold pulse noise damp Tape Activator Audio activated (VOX), 3 second hold Tape Output 500 mV P-P 600 ohms (nom.) Headphone lack Universal mono-wired stereo jack Dimensions 1M 8W x 6-7 8H x 7-l 4D The Grove engineering leom has create j the most revolutionary audio accessory on the...

Ever Say

Rve known several hams whose wives divorced them, naming amateur radio as the corresponcent. Look, this is supposed to be a hobby I know many DXers who stay home from work when Ihere Is a new country on the air I Know repeater nuts who have an HT with them day and night, tuned to their repeater. There have been some times in my lite when I've gone overboard hamming, I would spend my afternoons building equipment, my nights operating. and my mornings Steeping, I was so busy hamming that I didn't...

Every Issue

The entire run of 73 from October, 1960 through iast year Is available. You can have access to the treasures of 73 without several hundred pounds of bulky back issues. Our 24x fiche have 96 pages each and will fit in a card file on your desk. We offer a battery operated hand held viewer for 75, and a desk model for 220. Libraries have these readers- The collection of over 600 microfiche, is available as an entire set, (no partial sets) for 285 plus S5 for shipping (USA), Annual updates...

Exclusive Dispersion Zoom

ITC SA Series exclusive Dispersion Zoom lets you zoom in on any Center Frequency signal, from any one of five calibrated Dispersion positions. Preset at > 140 MHz, 50MHz, 10MHz 1MHz and zero MHz per division. The SA1300A displays greater then 1300 MHz on the screen at one time yet allows instant zoom to any Dispersion Scan Width as low as zero MHz per div. Allowing lor total control over afl Dispersion Scan Widths settings. 130 dB total Dynamic range 110 dBm Sensitivity. At Narrow and Wide...

Fantastic Fm Transceivers

Ramsey breaks the price barrier on FM rigs The FX is ideal For shack, portable or mobile, The wide frequency coverage and programmable repeater splits makes the FX the perfect rig tor Amateur, CAP or MAF15 applications. Pacfceseers really appreciate the dedicated packet perl. HTHUti-FMn signaE and almost instant T H switching. High speed packet No problem. Twelve diode programmed channels, 5W RF output, sensitive dual conversion receiver and proven ASY assembly. Why pay more fur a used foreign...

Field Day Antenna

No kiuiibslolwitt, TNT ta Nd-lu no on ffi . A , 20,17r 12. L ft TN' 172 i S No-1 uno Ort 40, 2 ), 0. Work otlier twnd w tiihcr Hei dv l Usu fiKludcsli sedation tal dri & 99 ft KCfo Tli uicidpii (xilt t-fai tmniiem (if the classic pff-fm pr cri .' nJ. ' i iV hiM> L Rt- .sn jjpj JiKuUtcd la 3000V RalCii son lA'Alts

Fluke Multimeters

(Ait Models A liable Colli Scapcmelcra i Series Mode 7gn jt7S.oo Mdcle-I 1 ib .SO Series 3-3 4 Digit Miif imeter I 0K-39 -DCVaccy - Aioiigg 3r graph Aglo'iH nu - rinjinr 7 rCia c j L D uspiay *Caiacitnc6 n'ias. Te iperaiune pr -jje - Full l. fiir.pn 3* RanoPE va lar c- diip ay deal sct > a rciad M-2Set fflssemblid) fSSM FM Receiver Kit & Training Course cti ir111 141 g Jio ror tfflin(i( r.1 j h c s. i in cJiH- m J-'n tPo-jl COv ft t c il n i mi r* t i ' i i -irs ii ei ild-LiifJ. ii

Foxhunt Headquarters

Locale hidden or unknown transmitters fasl. The Foxhound direction finder connects to Ihe antenna and speaker jack on any radio receiver, AM or FM from 1 MHz to 1 GHz. The anlenna (a pair of dipole telescopic whips) is related until the Nuil meter shows a minimum, A parr of LEDs indical e to torn Left or Rig hi, The Foxhound is ideal Jo use wilh a walkie-talkre. ir you wish Io lraosm.i1. go ahead, a builHn T R switch senses any transmuted RF and switches itself out of circuit whife you talk. II...

From Transel Technologies

Protect your HT's, Cellular Phones, Pagers, and any other devices you carry that may be subject to damage. The PACK-fT ia made ot 1 4 neoprene material which Ifi safety bett sewn to the nylon protective backing. The PACK-IT doesn't frey like many other materials and is sate to wash whenever needed. The strap and 2ir beltloop is made from commercial grade webbing and is secured in the front with a Velcro hook and loop assembly. The PACK-JT doesn't wear the radio tike leather and protects the...

Fsk

In FSK or frequency shifi keying, a carrier is shifted in frequency to correspond to the MARK and SPACE frequencies. Figure 1 (b) diagrams this nicely. Uke those tha follow, this is a redundant system. That is, information is obtainable by looking at either MARK or SPACE, even in the absence o the other one. Remember mat in ONI-OFF keying, if you lose the SPACE you have a sieady MARK, and if you Jose the MARK you have nothing Transmission of FSK is accomplished by shifting the transmitter VFO...

Gap

Tel (407)778-3728 Ask them about their new Titan. A compact vertical that requires NO radials. This antenna is so new they haven't had time to develop an ad. Built & tuned only Plus 5.0 S& H This magic-like little box activates any radar detector within 3 4 of a mile. Watch the brake lights come on the speeding spoils car thai just flew by. Keep those speeding big trucks from eating your bumper TheZtPPEK is alOGHz amateur transmitter the size of a cigarette pack,...

Gb

V c offer factory aLJihoiizcd warranty scrvico fc (conn, Kenwood and VaesL. We service al ir.ak a Bnd v jdel . Qw cuslonljare may send 3ny prurtu i requiring service to is > ve will ftandfe il for them, This is a an& lop ser ca thai keeps oui custom having rhora fyn than h& SSle in Ihie hobby, If you need a custom cable for packed and don't have time to rufik il, le us eu 1 y(ji. 0 A.P. & M. A H S mods are also available it re son ble rates to authorized hams only 2663 County Road I,...

Get The Atvbug

Made in USA Value + Quality from over 25years in ATV WBORG Snow free line of sight DX is 90 miles - assuming 14 dBd antennas at both ends. 10 Watts in this one box may be all you need for local simplex or repeater ATV. Use any home TV camera or camcorder by plugging the composite video and audio into the front phono jacks- Add 70cm antenna, coax, 13.8 Vdc 3 Amps, TV set and you're on the air - it's that easy TC70-10 has adjustable 10 Wattp.e,p. with one xtal on 439.25, 434,0 or 426.25 MHz &...

Gordon West Radio School

The amateur radio General Class Element 3B question pool has been revised as of July i. 1994. The new question pool will be valid for tour years, and will reflect the exact 288 questions and answers now found on amateur radio General Class tests. AH of the Gordon West Radio School books and cassettes haw been updated to coincide with this change Only the General CEass Element 3B question pool was changed last July ' says Gordon West WB6NOA. All other amateur radio question pools remain exactly...

Ham Rau Id Sf I War F

Firnrf tn tiam rw O HwmJ Comte logging, online awards tracking. QSf_ rna nage ment lamlity. radio intertacing, antenna rotor contrat, Oata terminal for all dlgitaJ modes, unequafeii packe spotTtng, contesiing, CW keyer, sound card support, full mouse support, cus omi tHe screens ano reports. sup it> documentation arvd tech support, orayiine propagation chan. interface to cai cook databases, and much more Specs JBM 386SX, 4mb RAF hard drive LOGc 4 DOS 79. Windows SM. LOGic Jr DOS 09. Windows...

Helical Resonator Preamps

GaAs FET preamps with helical resonators reduce inter-mod 4 cross-band interference ini critical applications. MODEL HRG- * ), 80 vhfi 110 uhf, *Soecify tuning range 142-150, 150-162, W2-174, 13-233, 420-470. Low noise converters to receive vhf and uhf bands on a 1QM receiver. Input ranges avail 50-52. 136-133, 144-14S, 145-147, 146-148, 220-222, 222-224 MHz, 432-434, 435-437, 435.5-43 .5, and 433.25 (to Chan 3), Kit less case 49, hit w case & BMC jacks 74, w& t in case 99, XV2 tor vta...

High Power Rf Switched Preamps

Model 146160W 2 Meters 19db Gain .7Sdb Nf Model 1460S 16CW 2 Meters 1Mb Gain .75db Nf Model 440 70cm 100 W I6db Gain .75db Nf Ail preamps have helical filters to prevent out of band intermodule ion in the receiver. Mode* 146 covers the entire 2 meter band. Model 1460S is of very narrow bandwidth and would be suitable lor SSB. Packet, or Satellite. Model 440 is factory tunable from 430-440 MHz Or 440-450 MHz per customer request. All models are powered with 13 to 20 VDC and are mounted at the...

ICOM

Icom has announced the JC-S20H high performance ail-mode dual-band base station transceiver for 2 meter and 440 MHz operation. The IC-820H is compact and light weight, making it ideal for mobile, fixed, or tieid operation. Yet, this new transceiver is packed with top performance features. Including a newly designed DDS capable of resolving 1 Hz tuning steps tor fine-tuning. Built-in satellite functions include normal and reverse tracking, independent uplink downlink control for Doppler shift...

In

12.7W approx output (144MHz). 2W approx. output (440MHz) from MOS FET power module and supplied 6V battery. 5W approx. output using optional PB-34 l Dot-matrix LCD with menu guide system 182 non-volatile memory channels with ID I DTMF keypad with memory function l OTSS (Dual-Tone Squelch System) with page I Built-in CTCSS tone encoder decoder I Automatic band change I Power-on call sign display I Auto repeater offset (VHF) I Input overvoUage warning 13-position output power control I Auto...

Info

Manufacturer's speculations Where both manufacturers specifications and measured values are avairabie, the manufacturers values are shown in parentheses Continuous duty. *** Prices approximate. m> remains below 1.3 1, as claimed by the manufacturer (Figure fi), For completeness, a summary, of the impedance, etc., of a few other commercially-built dummy loads, along v ith those described here, are compared in Tabic I. Multi-resistor dummy loads ai VHF frequencies can be reactive and result in...

Introductory Offer

SA1300A & OPT.S 1,3,6 ONLY 1795.00 note 1 sa1800b & opt.s 1,3,6 only 2195.00 tei OPT, 3 +t- SKlfe Res & W S35 .00 OPT, 5 1000 MHz Tracking Generator 250.00 OPT. 6 7 Digit Center Frequency Display S300.00 Note 1 Introductory Price for limited time only. To Order - For Information & Special Intro. Offer Terms MC, VISA, AE, Check, COD, PO (OAQ, LC, Transfer DISTRIBUTED BY ADVANTAGE instruments corp.

Hvc

A modified 10 GHz amplifier board, featuring the Motorola MGA-86576 Microwave MMfC. Gate bias circuit for FET is not required using MMfC. Circuit produced 20 dB gain at 1 GHz and 13 d& gain at 10 GHz. Approximate noise figure was 3dB. accomplished with maps and other references, but trying to find an unfamiliar location this way takes lots of Lime away from microwave operation. A big help with map use is to draw out compass directions to popular spots, giving forward and reverse...

Jz

Schematic tor Ktexim-232 RS-232 FC-L HAN adaptor report what its frequency is. as compared to a precise cesium or ribidium oscillator at the LOBAN transmitting site. The error will be in the transmission medium, which is minimum compared to WWV HF 5, 10 MHz. etc. The Loran receiver's interna program will repon the frequency offset of itie onboard oscillator and print out the reading. We can connect a frequency counter to the LORAN receiver and monitor this frequency and use it as a...

K

Figure 2. a) Simple AGC for the Argosy, b) ACG with fast slow time constants. Figure 3. Improved RF gam control for the Argosy. it even the rear apron is getting kinda busy A small toggle switch might fit if you do some forward thinking before you start drilling, it you have not installed the RF gain control you can pass on turning off the AGC, But by wiring the noise biankeron all Ihe time you can use the Wanker's switch to select between two time constants. Again, you don't want to turn off...

Kitchen Dr Po Box Carson Citv Nv

PRICES & SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION, F.O.B. CARSON CITY NV. NV. RESIDENTS ADD SALES TAX. I wonder how many of the old geezers of our hobby really know how slow their CW communications is compared to modern technology. Perhaps can get their attention with my own experience. 8ack in 1942 as a radio operator in ihe Navy Department in Washington, DC, my first assignment was to monitor the FOX broadcast. This was an 18 wpm CW broadcast to all ships at sea. This...

Kw Linear Amplifier

Amplifies signal from KWM-2A and similar S-Line equipment to 1000 W PEP using 4CX1000A 8168 PA tube (not included). Requires 80 W PEP SSB _ and 60 W PEP CW drive power. Manually tuned in live band selections 115 230 VAC power supply. Military surplus winged label Nfitlike new 30.6x17x16.8 200 lbs sh USEO-not tested less PA tube 900.00 4CX1000A 8168 TUBE, used lab tested, Prices FOB Lima, 0 * VISA. MASTERCARD Accepted Allow lor Shipping * Wnle lur lat 1 CaSaipg Address Depr 73- Phone 419...

Largest Stocking Mam Dealer Complete Repair Lab On Premises

BARRY INTERNATIONAL FAX 212-925-7001 Phone 212-925-700 Saturday 10- 5pm rSunday 11- 2p< n flT LEX-l Spr ng St. Stairon. Subways BMT-H'Prince SL Station. IND- F' Train-Bwy Siatton Bus Broadway to Spring St. Path-9th St 61h Ave. Station. COMMERCIAL RADIOS STOCKED COM, Motorola MAXON Standard. Vae j We serve municipalities, businesses. Cwi Defense, etc PoriaDles mobiles, bases, repealers

Location

Direction Finding System Tracks Down Jammed Repeaters & Cell Sites Models available with computer interface, synthesized speech, for fixed or mobile use, covering 50 MHz to 1 GHz, Call or fax for details Tuin your ol J har artd computer gea into casi now Sure, you can wan for a hanrfesi c try and dufTip it Cut you (tiff* youl gei a iar more T airsi c prce 1 you h ve is oul where 100.000 active ham potential buyers can see it than the few hundred local hams who come by a ilea market taWe...

M

UmJen EXP9200-J 9C0 Mtil. 2 fiat cor lesp UiliJtn EXP91(H> T 9(M) MHz. iirw oorJlesa piu> Fte J269-95 Cobra CP 10I yOC MHz. sprtid spcctrnfft cordtess phone 5 9-9 ICi> M handheld gioM pyiiiiyniiifi vntmj wcJthir radio with siorm RELM WHS150J VHP haiKiheld 5 will. 16 ch, craniceiver iii9-95 RELM YflF IS wact iynlhe zed Raider RC12950J 5 wait 10 Jiicler ham Ranger KCI2970-J 100 wait 10 mcicr hsm Uniden I.RD9(H> 0ttrJ-Jfeper Wideband Laser RadAr Elector- S369-95 HCHt J HamCail CO ftom for...

M Hi S

HS-12A 13'amp power supply 575.05 F1S-20A 20 ami, power supo v S& 6.95 R -35A 35 amp, power supply 149.95 RS m 20amc- w.-Volfannfi meter 16J R -3Sni amp wAroft amp ie er Si 69 96 SL 11A jj fyp, siyje S79 95 The OSCAR I ink antenna system is today's most flexible system for satellites. Both 145.9 and the 435 MHz antenna's have polarity switching. The entire system balances an a fiberglass boom The latest MBS design 435 MHz and loqarilhiTsic 2 meter spacing myfe fhis me best OSCAR antenna...

Mara

US & InterriiUJonaJ Callsfgn Lookup Over 1,000.000 fisbngs and ICKTCountnes Includes U Clubs A Military Stations ICALi program looks up name, address, vpirabon date, birth year, Iran* class. 1y. laLAcmg. area code, t zone, & in Reineve by an data e> rnenl on PC. cal, name and zip on th* MAC faundredt of new programs are on this disc- see the Electron res Software Compendium CD-ROM for a iaiyer collection of software -No hard disk required * Prini Labels Export tp hardAJisk or floppy -...

Monthly Discounts Applicable To Endusers Only

If you have two different radios you'll only need one charger to accomodate both radios. Now by sirnpJy switching the switch to the left or right, you can determine which charging cup to activate. NYl residents a 8.5 ties tfix. Add 4.00 fc postage and shipping 800 South Broadway, Hicksville, NY II80T In U.S.A. & Canada Call Toll Free 800-221-0732 In (MY State Call (5T6 942-001 1 Fax (516) 942-1944 World Wide Distributorships Avaiiabfe, Please Inquire

Now Available On Cdrom

Disk Version 39.95 CD-ROM 39 98 SAW OPTIONS 7.50 each RT SYSTEMS. tNC 620 STEPHANIE DRIVE HLINTSVILLE, AL 35BQ2 1-800-723-6922 or 1-205-862-9292 IT'S A SNAP WITH THE ELEGANTLY SIMPLE MORSE TUTOR ADVANCED EDITION FOR BEGINNERS TO EXPERTS AND SEYONO Morse Code teaching software trom GGTE i the most popular m the world and ior good reason, You'll learn quickest with the most modern teaching methods including Farnaworth or standard code, on-screen fluhcarcfo, random characters* words and billons of...

O D

70 Route 2C2N Peterborough NH 03458 piwe 603-9240058 Advertising Offices 70 Route 202N Peterborough NH 03458 phone 800-274-7373 70 Route 202N Peterborough NH 03458 phone & 03-924-0058 Manuscripts Contributions in the form of manuscripts wiiii drawings and or phoiographs arc wetcome and will be considered for possible publication. We can assume no responsibility for loss or damage to any material Please enclose a stamped- self-addressed envelope with each submission. Payment tor the use oi...

OOP

Switch outputs and the anodes go 10 the common 8-4-2-1 bus (which goes to the MCU for readback.) This configuration has the ON bits for a given digit pulling LOW during rcadback. with the OFF digits slaying HIGH. (Yes. this means 32 diodes for a full eight-digit interface Look for switches with provision for on-board diode mounting they do exist.) The COM line for each digit is connected to a unique microcontroller output iine which is driven LOW by the processor while that digit is being read....

Orders Call Orders Only

I I TECH O DEFVIMFO i716)924-4560 FAX < 7l6 9*M555 - ' TEftMS SsUsf H n qua nteetj Exitnme iot 10 e.iys if not plvaud felum in original lorrn _ '1 T0r r*(untf. Add SJ 95 fo* shq i Hindling * j tr& vttJK* fw 1ot*< gn orden add JCF foe SM -irt,* mad con .J S. vcUJ > 0 O nJei-w i,-a S20 *fel S3 00 -s-dF - odd MMB vj la* 90-day parts *ar raniy on k '. paris 1 -year paris & la or wjrranty an units RAMSEY ELECTRONICS, INC 793 CANNING PARKWAY VICTOR NY 14564

Osha

We Ship Worldwide Order Desk Open 7 Days Week Add S4.00 For Handling VISA MIC CHECK Computer REPEATER Concepts CONTROLLER User Programmable CW ID, Control & User Codes & Timeouts Manual with schematics * 90-Day Warranty Wired & Tested w manual 239,95 Micro Computer Concepts 8849 Gum Tree Ave, New Port Richey, FL 34653

Personal Computer Re Pea Ter Controller

S Full Duplex Autopatch 911 Emergency Access R e ve rse A u t op atch T ol I R e stricti o n V Voice Mail S Voice ID'S BSRXiO Voice Tone DTMF Paging , Scheduler Links Programmable Courtesy Tones J Hardware Logic IAD HF Remote Control Morse Code Practice Remote Base PCHC 2 Combines ihe power of your XT ATplatform with a high quality play and record voice digitizer creating the ultimate repeater controller. 695

Pkmbx

DSP-2232 has two simultaneous ports. Same modes qs the PK-232MBX. Includes modems for satellite use. Automatic signal identification. 17K Packet, PACTOR, and AMTOR MailDrop. DSP-2232 has dual-port Gateway Packet to AMTOR, Packet to PACTOR, & Packet to Packet. DSP-2232 features front ponei LCD. Up Down Doppler shift for PSK modems. 9600 bps modem included PK-96 is a 9600 bps packet-only controller with 9600 bps K9NG and G3RUH compatible direct frequency...

Power Station

J f The POWER STATION is a 12V x 6,5 ArnpHr gel-cell JL (T Xy mattery complete with voltmeter, watf charger and a cord for charging via automobiles, ft wil power most HT's at 5 Watts for 2-4 weeks (depending upon how long-winded you are). Also VHF, UHF. QRP, or HF mobiles such as the KENWOOD TS-50 (at SOW), There are no hidden costs all you need is your mobile, HT power cord or cigarette lighter adapter. The POWER STATION provides 12V from a cigarette plug and has two recessed terminals or...

Print

90 RETURN 400 FOE 1 2 TO 5 410 IF X (I> WF* THEN H(I) I5 420 IF X CD *ET THEN H(1) 14 430 IF XSCI) D THEN H(I) 13 440 IF XSiX CT THEN H(I) 12 450 IF X Cl> hB* THEN HCI> 11 460 IF X dVAB THEN HfD-10 470 IF X (I> 9 THEN H(I> 9 480 IF X CD 3W THEN H(I> 8 490 IF XSCI)- '' THEN Htl> 7 500 IF X (D n6h THEN HO) 6 610 IF XiCD S THEN H< I> 5 511 IF X C0 4* THEN H(I) 4 512 IF X 0) 3M THEN Hfl> 3 520 IF THEN H( > 2 530 IF X (D-1H THEN BCD-1 540 IF X (D 0 THEN H(I) 0 545 NEXT I 550 T...

Putting The Amateur Back Fn Radio

NEW LADDER4JNE WINDOM ANTENNA ALL HF AMATEUR BANOS INCL WARC BANDS, i 34' LONG COMES WITH 50 FEED-LINE. 4 1 BALUN, SMART SOLAR CONTROLLERS EXPERIMENTERS KITS CURTIS KEYER KIT ANTENNAS BO, 1 GO M LADDER-LINE MARCONI LADDER-LINE MULTIBAND DIPOLE LADDER-LINE JADE POLE COMPONENTS UC39 6 BATTERY CHARGER CHIP SQ44ASM CURTIS KEYER CHIP, LM338K, LM350K, MC3423P1, NE0O4AN, AND MORE PrO. BOX 368 E. HAMPSTEAD, NH 03826-0360 PHONE 603-329-6935 FAX 603-329 4499

R Dc

Similar Savlnfltcm AEA, Itdrm, Astr& n f'ncMj. CruShcfqTt, AllrttO. lc. AH L T.O. KEN JA OD th SA s O.O O r 9d i( Ham t tns In Siuck. all Pneat, Cn-,h fqei Ptbsvz More Spaciom In HAW-ADS. Looking F SomathirM Not Listed Cfiltc-r Wjieb Tasi, hma and fnDney, haw numb& i floss DISTRIBUTING COMPANY 7ft 5 State Street Pretton, (JL Hot r5 Tue -f n -2 Mortfjyg Ciajfrj & Sun _

Radio

The beginner's guide to the exciting world of amateur radio,n Radio Fun is packed full of information to help you get more fun out of amateur radio. Bjsic bow-lo articles will get you up and running on p kei. ATV, RTTY. DXing, and ihe dozens of oiher activities lhal make amateur radio such a great hobby, You'll get equipment reviews geared toward the newcomer. We'll help you upgrade to a higher class license with monthly columns designed to teach you what you need to know in a tim and exciting...

Rrt

ART-1 r A compieis miei'acesyiiem for send and receive on CW, RTTY iBauOct 4 ASCII) and AMTOR. for use wilh the Commodore 20 compu re r Ope rat i rtg program on disk 1 nciuded Alft 1 A complete in teriaca yslem of send and receive on CW, RTTY (Qa dot & A& C ) and AMTOR, lor use with Commodore VlC-20 Operatinc program in ROM Alft 1 A complete in teriaca yslem of send and receive on CW, RTTY (Qa dot & A& C ) and AMTOR, lor use with Commodore VlC-20 Operatinc program in ROM SWL A...

Rs

While the contacts on A-O-13 were fun to make using the simple portable system, chasing RS-12 was like gelting back to he days of Sputnik-1 but proved to be more difficult than anticipated. RS-12 is ctirrenily running Mode K. the HF mode, which calls for a 15 meter uplink and a 10 meter downlink. Sputnik-1 transmitted just above 20 MHz. At our lakeside station, a NCG Co. Model 15M mobile transceiver was tried with a modified CB magnet-mount base loaded whip lor Ihe upiink A Uniden HR-2510...

Rutland Arrays

PA 17070 information (717) 774-3S70 Spm-lOpm EST Drdflrs Phtmn fAX 1-800-536-32G& DEALER INQUIRES ARE IftVTTED The Only Material That Will Adhere to1 Polyvinyl or Vinyl Outer Coax Jackets- odd-shaped fittings, > N& n-contairiinaimgandnon- conduciive, i Wide ambient temp& raiure range i-Si FlMlWF). Stays flexible foryears insuring moisiu re-proof connections, Reusable quick disconnect and reseating with same n-ateriat A must for satellite TV *...

S

Demonstration Disc (IBM-PC VGA compatible) of signais recorded from WX-SAT system. 3 Shipping FOB Concord, Mass. Prices subject to change Without notice. SPECTRUM INTERNATIONAL, INC. Post Office Box 10S4, Dept. S Concord, Mass. 01742, U.S A Phone (bOG) 263-2145 Fax (508)263-7008 bers Creek Rd, W.r from 9 AM-3 PM. VE Exams at 10 AM, Commercial and non-commercial venders MUST pre-register for tables. Talk-in on 148,28. Contact Alan Atlen N7EAY, P.O. Box 1118 , Tacomar WA 98411. 7k . (206)...

Same Day Shipment

All instruments are true Pocket Size 4 High x 3.5 Wide x 1 Deep, < 14 cubic in and are shipped with factory installed Ni-Cad batteries and AC charger adapter. Antennas are 98 NE 38th St., Ft. uauderdate. FL 33334 Terms Shipping handling charges U.S. & Canada 5 S5 mirvT STO m ix) Others add 15 - FL residents add 6 tex, COD fee S5 VtSA. 'MC Discover accepted. Prices & specifications subject to change without notice or obligation, FIND PREQUEiXICIES FAST with the Sta pk ATH Series Four AUW...

Sdp

Make and receive phone calls from your mob e rig or handie-talkie with your own personal autopatch. Connection is easy jus hook-up to the mike and speaker jacks on your base station ng and pfug into the phone finet Complete control is assured through touch-tone access codes that you set and change at will. Long distance toil access is controlled by special code that you set. preventing fraudulent usage. Atl programmabfe Codes and set-ups are stored in special non-volatile memory immune to power...

Servicemonitorswanted

Any late model Test Equipment, Call, CW'ers, USN FLAMEPROOF KEY, new, packed 1955, 59 (shipping included). Collectors, 15 pages, mostly telegraphic, refundable 2.00 plus 2 Stamps. Joseph Jacobs, 60 Seaview Terr, Northpart NY 11768, 6NB393 IT'S BACK The return of the HW-8 Handbook Second printing. Modifications for ihe Heath QRP rigs. First class mail 11. OX add S4 for air mall shipping. Mike Bryce, WE38VGE, 2225 Mayflower NW. Massillon OH 44647. BNB404 (patented 1872) by Thomas Appleby....

Shortwave Receivers Stocked

Telephone scramtrters lor cellar and regular phones, weacri BIRD Wattmeters 1 Element In Stock Df ITAL FREQUENCY COUNTERS OPTO ELECTRO WCS mode 13 H A. (M3 0MHz 2300. M10 H. Q-220 MHz. 260 Hr UTC-3000 28W AMTE WHS-AU Alp-uOrTa ANUA* Bitot ComKCuVtcratt. piiffl WP, .hwsN . Ek. AMTE WHS-AU Alp-uOrTa ANUA* Bitot ComKCuVtcratt. piiffl WP, .hwsN . Ek. EIMAC 3-500Z 572B, 6JS6C 12BY7A& 6146B BIRD Wattmeters 1 Element In Stock BENCHER PADDLES ALUNS. LOW PASS FILTERS IN STOCK Df ITAL FREQUENCY...

Special Combination Offer

For a limited time, if you rde* PC HF fax (see Qur other ad m jtiis issue), you can aed ou' new ane mproved PC SWL 3 0 -or 590 DO instead of o r regu'a' iqw prie o* 95 00 PC SWL contains ihe 'woware, software instructions a c lrequency StS eeoetf to ailcw yo.j lo rrze-.ve a vast cartel y c' d g-ra t caccasTs iransrnittec over shortwave radio AH ycu need s any IBM PC or cornpatfcle compote' and an SSB s otwave receiver The product consists erf Dcmodutator Oigcia Signal Processing Software 200...

Special Features

SOLID STATE ELECTRONICALLY REGULATED FOLD-BACK CURRENT LIMITING Protects Power Supply from excessive current & continuous shorted output CROWBAR OVER VOLT E PROTECTION oil all Models HCBpt BS 3 h, RS-4A. RS -SA. R5-4L 5-5L MAINTAIN REGULATION & LOW RIPPLE at low line input Voltage HEAVY DUTY HEAT SINK CHASSIS MOUNT FUSE THREE CONDUCTOR POWER CORD except f r RS-3A ONE YEAR WARRANTY MADE IN U,5A

Spy On The Earth

See live on your PC what satellites in orbit see Capture live breathtaking images ot the Earth for fun or profit. Zoom in up 10 20X. Send 39 check or MO ( 45 air, 50 overseas) lor our fantastic 12 diskeue set of professional quality copyrigNed programs iiBM l pe) that does satellite tracking, image acquisition, imago processing, 3-D projections and more Direct reception from the satellites guaranteed worldwide without a satellite dish. Schematics included for mteriace For FREE information...

Standard Series

5 -1335 25IJ4Z 349 S -1340 40U H Si95 S-1365 GOI Hz 049 High LuminanM CRT TV Sync lmV Ssn& itivity I xl, jtIO Probes X- Y Ops rattan Carr. leie Sehe naiic Voltegr, TiTii, * Fracje-icy differences d splayed on CRT thru Ihe US ci curses ( -1345 OFty) 1 54-1 B - JO MHz Dual Trac ___S 749 2 1 fr - fi MHz Dual T race, ulayetJ SflOOp, 21 - TOOMHz Thtee Trace Dual T mc Base, Automatic Smiti Finder M Z Ak 5 Mco lalion M Bulft-fcn CsfTDonsRr Tesi M PJus.al ihefBaltirai o 'at rc bi i' serwa a l * 1...

T

Figure 2. (A Construction detail of the radial dummy Figure 3. Complex impedance measurement using ihe Vector Voltmeter. Figure 3. Complex impedance measurement using ihe Vector Voltmeter. VB VA is the vector voilage ratio between a 50 ohm resistive load and ihe loiid under tesL. This is the resistive (or real) component of he complex impedance of the toad. To find the reactive component, the phase difference (m) between VA and Vri arc measured, If VH lags VA. the r activ ( magi-nary component...

Tad

Patches telephone calls from your radio Io phone fine. Great tor making and receiving phone calls here there are no phone lines Simple io use, Wite or lax tor mquires. S imp lex, semi-d upJe*. Ml duplex. CES & CSI Models srocked SDI-50, PPV, CS700 300 900 etc Our service Lab will wire in systems lor you if requested. Save money on batteries. Ask for Special Prices.

The Advantages Of Buying Azden

Factory-direct from Azden (2, 6,10, 220, 440), or you'll enjoy these great advantages FACTORY-DIRECT SUPPORT Engineers and technicians from our factory' perform all service, and our all ham sales staff has years of RELIABILITY Designed to MIL-STD 810, Azden radios are commercial grade and virtually maintenance tree. COM PATABILITY For Packet, CAP and MARS. TWO YEAR WARRANTY Everything is covered the first year, and we only charge For labor in the second year.

Trade

ALL BRANDS OF 2-WAV RADIOS & ACCESSORIES (406)252-9220 1113 Central Ave. Billings, MT 59102 C.W. WOLFE COMMUNICATIONS me into amateur radio was OST magazine. Our school library had a subscription, so when wanted to know more about amateur radio I went to the library and started reading, it sounded like fun. so 1 joined the schoof radio club, where was abte to get on the air. The club station was W2ANU on 160 meters. Well, that was about the only voice band Class B amateurs could use. and...

U

HlliWlllI lilhl l m.r.ijJ tL.i*mi tT . -* li -tTTT T-f-li other sources it looks for a .WAV file. More of the functions of the software work with this mode than with Recorder or Real-Time. The functions of Spectra lus include Time Series, Spectrum, Spectrogram, and 3-D Surface Plot. The time series is the ordinary amplitude vs. time display lhat one sees on an oscilloscope In this mode, the digitized audio is seen in the Volts Time display on the computer screen, and it can be printed. The...

U Sa

PAY TV ANO SATELLITE D SCHAMBLING 1994 NEW,.,.free BBS witfi sub to Americar> Hacker. New T ties p*t TV md Sat*ibl DW-'wNmg IBM rcLito a e Jd ta* iPfl Ufelfc fies Sdwaci. luThC* ty uti dip iiili li. ECU i ne Ch 5 t O PIT TV dii 5 II. itkntt *Bewio TK Comprit wi J (V ocfivMRi CA* Hacking BL d Sats iil* SytUfitt UM 7DO ircLC & Si Hacktr Y to Al im rtra Si S 95 rteti VB4J6 w SSSis. American Hackir noir* m retes sfeku. - E-d S 5 tf our no. not ifl bled. Eum HSK...

Uhf Repeater

Make high quality UHF repeaters from GE Master II mobiles -jo Wild Mobile-Radio Duptoting and tuning in formal ion 4 information without radio Orders 1-800-456-5548 For info. 307-266-170 P,0, Box 4012 * Casper, Wyoming 82604 Flash cards 'NOVICE thnj EXTRA* iheory Key words underlined. Over 4000 sets n uscf f Of beg ner. OMs. XYUAKk* r gekepal -----------Or er Today

Waffl

Wire antenna enthusiasts will be interested in a new center support device, the WA1FFL Lad-der-Loc for 450 ohm ladder-line antennas. The device is constructed of calcium-reinforced polypropylene and features a built-in strain relief to take the weight off ihe wjre joints at the feed point It fas overlapped construction lo keep water out of Ihe sides and is very sturdy. The Ladder-Loc goes together quickly with two wing nuts adding a touch of sealant will make it completely weatherproof The...

Warranty

TiCC-90 Soft Case for alf models S12 f TA - 90 Telescope BNC antenna 1 dTA-90 Telescope Elbow BNC anion nil 16 ftRD-150 150 MHZ Rubber Duck antenna 16 i*RD-2750 27 & 50 MHZ Rubber Duck antennahr 28 sRD-450 450 MHZ Rubber Duck antenna 16 tRD 800 Cellular phone band RD antenna 29 C 6A ABOVE 7 items, SAVE 30 99. M-207- C Inierface Cable MFJ ant analyzers 10 P-110 200 MHZ 1X-10X probe 39 LP-22 Low Pass h Au dio probe. 25 *DC-10 Direct. 50 OHM probe 20 Economy Frequency Counter t-1300 MHZ. 3 gate...

Weather

Sawtnie & HF FAX for IBM Clane STipwn with optional 20 LED Tuning Aid Feelur** Processes WEFAX, VIS * IR NOAA. METEOR. APT.24 LPU, 120 LPM 4HFWEFAX Conn ** ig Computer Lin* Pmiar Port The software was cr& aiwJ by Or Ralph E Taggart, WB80AT. For details cea Chap ar SL Frfth Edition of the Wither Satellite Handbook. Comp ele Kit Only S 159.95 A& sembled Bl Optional 20 LEO Tuning Aid add 40.00 CA dd 7. 75 safes tax. S& H. 6.50 (insured) FofGtgn Qfders add 20 , For cat*7 0.7 ssnrJ legal...

Wire

TOGA 2C RED3LK 25PT 510.00 50FT 20 00 T00FT V38 00 1ZOA2CRED-& LK 25FTS750 5QFT 15.00tOOFTS2& 00 1- TINNED COPPER BRAiD tOFT 10-00 25FT 20.00 tOOFT 75 00 TINNED COPPER BRD 25FTS12 00 SOFT 24 00100FT 40 00 CONNECTORS PL 59 SILVER TER-ONGOLD TIP 1QPKS MJW 25**5 S25 OO tT CONNtC T OR SlLVER GOLD T IP 1GPKS 32 50 25PKS 75 00 MORE ITEMS STOCKED.,. CABLE A WIRE CUT TO YOUR SPECIFIC LENGTH FAX 708-506-1970 113 McHenry Rd., Suite 240 Buffalo Grove. IL 60089-1797 For Complete Literature Mail SASB...

J

Public safety agencies responding to hazardous materials incidents must have accurate, tip.to-daie wcatlier infonnation. The Davis Weather Monitor It is our top-ofthe ihfi weather station which combines essential weather monitoring functions into one incredible package. Glance at the display, and see wind direction and wind speed on the compos rose. Check ihe barometric trend arrow in see ii tlie pressure is rising or falling. Our pack age deal includes the new high resolution 1 100 inch rain...

Zd Engineering

Specialists in CATV Hardline Matching Transformers Power Dividers and Related R F Devices, WiRElES CABLE - IFTS - MMDS Amateur TV U tn H.jf, Gam Stt-ai- - ToniUe i 9 Hi 2.7 Su * 5& -Channf> Dxfr Svsiem S199 95 * 36-Channel Oish System 14-7 t (Munal CiWTfiwxtw mot nN> *r i Aid EW.00 * Afimiwias umiKinsnta, Custom Timng Available 1 nr rffl* iSfl -iE lnr ,TftE CiUiOg

Circle On Reader Service Card

Add 53.00 Ah or f 6 OG for rtwvUSA offers fcicL Citsfffl w'ortor Sflrtf S*SE for m M* < rrfo US Chert w ftwrrmt Monc or ar Aaim oron tdd litxi rn * Spacrfy J V or 2T lo cy This high speed. easy-to-use yagi software features autodesign auto-optimize and performance analyses ft witi accurately calculate up is -7 elements to 1 Ghz with boom and opened element compensations, a folded dtprie option and prints all files, charts and graphs n dudes both co-processor A no optrKPssor vefsioiis For PC -...

Dx

Duplexer 0-239 in and two PL259 oui connector only. 28,95 As above with 6 leads on PL259 connector. HR As above wilh 1 N connector and 1 PL259 connector. 37 95 This nexl generation of mult mode contr ler is made in the USA 'A lh a fron I p lu ici designed tor you Enjoy dual port action for packcl, Fl TT Y, FACTOR. CW, fax, and more We oMer Factory a ul i orinec warranty service tor com, Kenwood end Yaeab. We service al ra- es and models. Our customers may send any produc' 'squiring service to...

Is

Comet produces over eighteen corrsbinaions of duplexers and triplejcers. These units are available with and without lead-in cables and feature high power handling with Jow loss. We otter fad ory authorized wwranty service iDr I com. Kenwood and Yaesv We service airmakee and mooeis. Our cuaromar nnav saad any produc fequinng service Id us, and we will handle it for ihem. This is a one-stop sarvicc that hoops our customers having more fun lhan hassle in Itils. hobby If you neetf a cusionn cabla...

Kenwood Authorized Repair

TRONFCS, Box 379, Groton MA 01450, (508)448-3322. 0NB31O PROGRAMMABLE COUNTER - Works with ANY VFO Rig Gel a digilai display for your rig, 100 Hz resolution. You can read the tuned frequency directly, no need to calculate offsets, Counis lo 40 Mhz, up OR down. Counter Kit. 69.95 Kit w case, 99.55 Assembled w case, S139.95. GUARANTEED TO WORK. For info send SASE Call write to order S & S ENGINEERING, 14102 Brown Rd., Smithsburg MD 21783 (301)416-0661. BNB334 RCl-2950 OWNERS New modification...

AUG

QUINCY, IL The Western IL ARC will hold the 1st Post-Flood Ham Radio CompuEer Swapfesl at Eagles Alps Lodge, 3737 N. 5th St. VE E*anns (NA9Q-Reservations (217) 224-8526). Talk-in on 14S.63 .03. For info, contact Rod Simon N9MCX, c o WIARC, P.O. Box 3132, Quincy IL 62305-3132, Tel (217) 223-8739. TACOMA, WA The Radio Club of Taco-ma will have its annual Flea Market at Charles Wright Academy, 7723 Cham- Model 81000A is a thoroughly engineered, portable, insertion type wattmeter designed to...

1

And IC- ME are me 'irst VH UHF triband handheids in the amateur va rid .44 WH . 430(440* '.H'z anc 1200 MHz tand units rg Other attracuve features include- 7 memore chants CHjif -m TK4F encoder decoder -i DU F LCD Contrast levels wth tach n h ling and Off-timer, Programmat le automate powoll function, SlmI -im c oe* v.ilh tillar functions a_r> d much more handheid transceiver offers unsurpassed performance and iho kind of nnovative ff> fltLJr& s amateurs have come to expect from 1 Icon*...

Kud

Patcomm Corporation introduces the PC-161a full featured HF transceiver with built-in keyboard interface. Plug a standard IBM XT' compatible keyboard into a PC-1610 and nstantfy enjoy keyboard CW, RTTY (BAUDOT and ASCII) data communications. Incoming morse & RTTY data is decoded and displayed on the built-in LCD display, The PC-1610 otters the following features Built-in XT keyboard interface (keyboard optional) Built in digital power SWR meter DDS VFO with 1 Hz step size Selectable variable...

Dvertisers

* A fi A Engineering 40 n.Uiriii f ffii ifTi imi fca niiim***tri J ' 35t Absolute Vatue Systems 17 Indianapolis i.*a - mm m m m m m m m 92 Advanced Electronic 281 Agrelo Engineering,.,. Ttl 91 194 All Electronics Corporation 25 Amateur Radio Excellence 17 * Amptre. * + + - - ** Hl fc i -rw* - Ulf W'f 40 380 Antennas West *.h,++.37 336 Antennas West 56 107 Antennas West 91 135 Antennas West 92 296 Antennas West 93 69 332 Antennas West 95 SO Arrow * Azde n Co rporal ion 37 21 B & B> 41 Barry...

Wgr Dsp Ii

What is DSP DSP allows the construction of various filters of great complexity by using computer code. This allows us ro have easy access to a variety of filters, each perfectly optimized for whatever mode we are operating. The DSP II has been designed to operate in 10 different modes. Four filters are optimized for reducing interference to SSB phone signals from CW, heterodynes and random noise interference. Four more filters operate as bnck-waJi CW bandpass fitters The remaining two filters...

Micro Control Specialties

Many different businesses without being tied down 24 hours a day is to pick the besi managers I can and give them the authority to run them. Most oi the time this works out fine, but now and then one screws up and then of course covers up. In this case it was with the IMPS Manufacturing Division. This is the Independent Music Producers Syndicate, which has been brokering the manufacture ot compact discs for over a thousand independent record companies. The team running it managed to lose a...

Ehbm

B cm 1.37Q- 8001 T'O AlurTih-um Eferre r Ini Dii Al SinlMt & M Caan ccfwweiw 1M' Alomirium rod , . iSOt WRrl Id ii Ea 3* flisnastar lKk 0 ALSO AVAILABLE HK3H PERFORMANCE YAGI ANTENNAS FOR 5 METERS 1 METERS. 222 BH*. 432 MHx TrapoT Wes Signal, ATV, EHE. OSCAR, FTM, P*cfc*t. ComfliT Add S Ut*S S--H tor ft or anna SE wMt ' M ttn p V ad s 6 is, ss CALL QP WR 7E FOR Ol BV CATAlOC

Communications Electronics

New FCC Rules Mean Last Buying Opportunity for Radio Scanners Recently, the FCC amended Parts 2 and 15 of its rules to prohibit the manufacture and importation of scanning radios capable of intercepting the 800 MHz. cellular telephone service. The Electronics Communications Privacy Act prohibits the inters tional interception of cellular telephone transmissions. Supplies of scanners that are capable of being modified to rcccive full 800 MHz, coverage such as the Bearcat 200XLT and 2500XLT are...

Elktronics

_K Number 28 on your Feedback card The history of amateur radio has been frequently marked with people trying to make a buck. I'm not talking about legitimate businesses that sell products or services to the ham community. rhrt talking about the periodic attempt by some less-than-legitimate characters to take advantage of hams. The most recent to come to my attention 3s interesting only because of who is behind It. I received a East from an amateur in Texas that contained the contents of a...

Price Break Through

Compter and confident, it sets exciting new standards for portable corn muni cations, combing simplicity of operation v ith a multiplicity of features. In addition to built-in DTSS and paging in notions, i' provides a dual-frequency transceive capability, wide band receive, a sJiding keypad covor, and many other features. While supplies last, This 2 meter FM mobile provides the user-friendly operation the amateur radio operator expects from Kenwood, It comes complete with extra-large display,...

Made In The

Compare Quantum's unique features to your going rnto different schools. First, she gets to demonstrate amateur radio to he children. Astronaut Ron Parise WA4SIR is a member of the Goddard ARC. He sometimes joins Vicki in the demo part of her visit and speaks with the students on the radio. Second, she is exposing kids to some of the more fascinating aspects oi space travel and com munitions. The frequencies for retransmission are 3860 kHz, 7185, 14295. 21395, 2B650 and on 2 meters 147.45 in the...

Mfjs

MFJ's super DSP filter automatically eliminates heterodynes, reduces noise and interference simultaneously on SSB, AM, CW, packet, AMTOR, FACTOR, RTTY, SSTV, WeFAX, FAX, weak signal VHF, EME, satellite -nearly any mode vou'll ever encounter. Yoii gei MFJtunable FIR linear phase filters that minimize ringing, prevent data errors and have brick wall11 filter response with up to 60 dB attenuation just 75 Hz away. Only MFJ gives you tunable DSP filters. You can tune each loupass. highpass, notch...

Azden Pcs 7000 Ctcss Tone Encoder

Azden Pcs 7000

The connections on P3 can be made directly to the Julieboard via a cable or via wire-wrapped jumpers bridging P3 to the DB25 connector PI , Note that the physical wiring differs for male vs. female DB25 examine the chosen connector carefully and locate the right pins, The ground connection need not be made if a DB25 of either sex is used, The single in-line connectors are cnd-stackable, so some connectors could be partitioned into two smaller connectors. For example, P6 could be implemented...

MFJ super DSP filter

Tunable brick wall bandpass, lowpass, highpass, notch filters . . . programmable preset filters automatic multiple notch filter eliminates heterodynes , . . adaptive noise reduction reduces noise and QRN . . , for Voice, CW, Data . . . 100 RF Tested i ndustry's Best Warranty Competitive Prices High-Quality vacuum tubes .nciua.ng Look Tor us at the Hunts vi lie Hamfest August 20-21 8200 South Memorial Parkvva gt Huntsville, AL 35802 Telephone 800 638 3925 or 205 650 5522 FAX 205 880 8077...

The Drake SW World Band Shortwave Receiver

A constant companion, at home or on the go R.L. Drake Company 230 industrial Drive Franklin OH 45005 Telephone 513 746-6990 Fax 513 743-4576 Price Class S599 he operator s manual for the SWS is adequate for most users, but it is lacking in specific technical information, block or schematic drawings, and an explanation ot the theory of operation However, the operational instructions are very complete, and at no time was l at a loss in the operation of the receiver, A convenient log for listing...