Wbuild This Ssb Transceiver From Our Modules

EXPERIMENT LEARN ELECTRONICS BUILD AND DESIGN YOUR OWN AM, FMt CWt OR SSB RECEIVERS, TRANSMITTERS AND ETC. WITH OUR MINI-LINEAR CIRCUIT KITS All kits Come Complete vvith Eiched and Dniied Circuit Boards and All Parts Needed To Function, As Descried AFA-1 AUDIO AMP, LM 3fto I 2 warn * itonuoupm 4.95 AFP-t BMD-t BAL. MIX.LU useu -s.B Mo uirofT iio i S9.95 DET-1 AM DET . AmEnvFK OrtfM Wilt AGCCMp i 3,95 DET-2 FM DET. LU306ifM o-wctor bSKHZon-it iiNZ) 7.95 DET-3 SSB DET. Lia 9es&...

Info

Mt & eacon 4matel> r ft ac i club REPEATER 147.645 . 045 Fig. 7. Emergency Locator Transmitter (ELT) alerting system. it to the inverted input of voltage comparator Q1 B, The voltage comparator is adjusted, via R3, such that Q1 B output is at -12 volts under no-ELT-signal conditions, This level ensures that Q2, the relay driver, is off When an ELT carrier is received, the Clegg 22'er age voltage becomes more negative, causing the Q1 B inverted input level to go more negative than the...

Out

Equivalent circuit of the rf summer. of antenna array optimization and coupling for this system is an area for much additional experimentation and development. The circuit to be used for antenna summing should provide a low insertion loss, provide a stable and electronically-controlled gain characteristic, have negligible phase-shift variation with the control voltage, be compatible with a 50-Ohm unbalanced input, and lend itself to operating into a 50-0hm unbalanced output, PIN diodes...

Strap Protects Devices And Users

A new, conductive wrist strap that features an integral resistor to safely ensure constant grounding in static sensitive areas has been introduced by Charleswater Products, Inc. The CP401R conductive wrist strap features a 1-megohm fixed resistor for optimum static dissipation and user safety Comfort- able and lightweight, it attaches with a VeicroiJ fastener and uses a swivel snap to conveniently disconnect from the ground cord. Nordal Electronrcs precision packages Nordal Electronrcs...

Mfj

Up to 3 KW PEP and it matches any feedline t 8 30 MHz. coax. balanced or random 10 amp RF ammeter assures ma * power at mm SVJR SWR Wattmeter. lo* ret., 2000 200W 18 position dual inductor, ceramfc switch 7 pos, ant switch. 250 pt 6KV cap 5x14x14 300 wati dummy load. 4 1 temte balun. 3 MORE 3 KW MODELS MFJ-9B1, 209.95 + 10 like 984 less ant switch ammeler, MFJ-9& 2, 209.95 (+ S O), like 9fi4 less am meter. SWR Wattmeter, MFJ-9aO, 179.95 (+ 10 , hke 982 less ant. switch flexible antenna...

Price

Price Includes alrtar*, hotel (double occupancy), land transportation, dally American breakfast. dinners, cocktails 4 city tours in each country,. , and more Price Includes alrtar*, hotel (double occupancy), land transportation, dally American breakfast. dinners, cocktails 4 city tours in each country,. , and more For mom Information and brochure, Eilen Hither Commer a Tours International 870 Market Street. Suite 742 San Francisco, CA (Hi02 (415H3W072 or 433-3406

Icom America Incorporated

I 11 i 11 fifth Avenue StE 3331 Tovcrwood Dr Suite 307 B* Ii viier WA 96004 Date, W 7 55 34 Phone ('206j 4f> 4-0i S5> Phor,e (si 4 ofc appro* mow and sublet ra choree without rwtiu ch obligation AH ICOM radios iignlfteonily exceed FCC iegulotlom limiting ipuitous emissions. Selling 73 Magazine, the ham radio magazine that offers qualify and quantity, brings the ham into your store. Once through the door you can sell him anything. Our dealers are telling us that 73 outsells them all .so call...

Award Of Ghana

Applicants the world over are encouraged to work toward the Ghana Award, Confirmed contacts are required with five different 9G1 prefix stations of Ghana using a minimum of two amateur bands. There are no hand or mode restrictions, but this award is available for all CW, all phone, or mixed modes. To be valid, all contacts must be made on or after January 1, 1958. The OSL cards must be submitted with your application, along with an award fee of seven IRCs. Forward your request to 9G1 Awards...

Power

Grve your 2 meter hand held 50 wails of punch with the Model 2C05Q, or 1 DO waMs wuh (he Model 2C100 amplifiers Or use the Model 2C1 DO with your 25-watl output 2-meter rig by plugging in The appropriate drive-programming module Compaci and reliable, all VoCorn power amptifieis feature front-panel on-off swathing foj conven ieni shin down when they're not needed tot short See your dealer or contact VoCom today for a copy of our detailed four-page catalog Provides nearly 10-dB gain over a rubber...

Signal Generator

* Covers 100 to 179 999 Hz n i kHz sreps * iti thwmD'wheel dial Accuracy 00001 at 11 frequencies Internal frequency modulation irom 0 10 ovef too kH2 at a 1 kHz rate Spurs and norse a least G dS below carrier HF outpul adjustable from 5 to nOOmv cross 50 ohms Ope ra les on 12vt c ia Vi mo * Pr ce S 96 plus Shipping Ir sloe* tor immediate shipping Overnight Oeiivery arable at extra cost Phone 468 2720. ' * Covers 100 to 179 999 Hz n i kHz sreps * iti thwmD'wheel dial Accuracy 00001 at 11...

Amateur Radio Advanced Class Study Guide

Now you can use your TRS-8G to help you prepare for your Advanced Class license test. You can take 100 sample questions designed to test your knowledge of all the areas ol skill required to be an Advanced Class operator The study guide shows you, based on how you answer the questions, which knowledge areas you need to examine more closely, while it familiarizes you *ith the format of the exam given by the FCC The program will serve to see how well prepared you are for the exam, and hopefuliy,...

Q

Bronze N L-ki.1 ' n Pewter i ild -J n I mewl jiuiys a breezy new intro to the world of hamming Amateur Radio, Super Mob-by by Vince Luciani K2V . Cologne Press (PO Box 682, Cologne Nf 082131 139 pages, 8,95 softcover, 514.95 hardcover. You're trying to interest a friend at work in ham radio. You cast about for an adequate definition of what the hobby is like and what it means to you. More often than not, you can't put the right words together. You find it hard to...

For Icm Oscillators

Please refer lo the 4 1 Series Crystal Specification Sheets. (Available on request.) Prices on crystals will vary with frequency being ordered CALIBRATION TEMPERATURE RANGE Depends on crystal frequency being ordered. F-605 for all except crystals betow 160 KHz. F-13 required for crystals below 160 KHz. OT-111 OT-12. OT-12A , 24PF 01-13,01-14 20PF ALIGNMENT OSCILLATORS, Models 812, 814 32PF Note- Circled numbers refer to nu< T> tie.rs on Crystal Specification Sheets.

H

The i-f type has 50 dB blanking range. Built-in speaker is powered by low-distortion audio (less than 2 The right transmitter features. Frequency coverage from 80 through 10 meters, including the new 30 meter band, in nine 500 kHz segments (four segments for 10 meters), with approximately 40 kHz VFO overrun on each band edge. Conuerfib e power 100 or 10 watts input with 100 duty cycle for up to 20 min shows forward peak power on transmit, SWR, and received signal strength. PTT on ssb, full...

Microwave Downconverter Rx

Quality metal enclosure w hardware The RX-2 il> 0 downconveftei is a siaie-oi-(h art microwave convener- that convetts 91)0 - IJ Mh mi( rcftvate signal-* down to VHF. It is especially suited tor line-ot- sryifil reception oi amateur and TV irans missunis jnd will drivetjtthef J VHF ivt e> ver ur il standard television. I jli tv rife or fur .nuiith rtd data

Sm

UCC-I Basic downconvarter, 540-00 incIudefi PC hoard, PC bonrd parti md hrief Instruct ions. PC beard (Jnf rsai Conqualeacions t.P exaL-citiR standards required or nievnvavp performance-SMC-l EJ. Iinct- IntMiductioii to Micro waw p-tcka e- Include* UCf- I * vir ry detailed step by Uep assembly m.inual , Ktrfi p rts, MUrnwavt1 Antenna Cnokbonk. Lot i of infuraatl n on performance Jiid spro . enents < high perEor ance fTOrtt tr nRiator. PEfl-t Broadband IF Anp I 1 f i i- r , c ii '(fnsite coi*...

Tm

S-2666 No Busby Rood Oak Harbor, WA 98277 73 Magazine does not keep subscrip tion records on the premises, therefore calling us only adds time and doesn't solve the problem. Please send a description of the problem and your most recent address label to 73 Magazine Subscription Dept. PO Box 931 Tha k yoiu and enjoy your subscription * R *kv*i uni tri f+iF ug+n QImu. * R *kv*i uni tri f+iF ug+n QImu. Ihitl rirtV ftfltn tu Orr nil iTiijnf le T-ii. tcJn pam-T > . Ijmpa nVfeftH F .i.i i i si all....

Co

Fig, 6 Amplitude and phase modulation for an uncoupled antenna array of size 1 4 wavelength and a bearing angle oi 0 degrees. The dashed lines represent the ideal (continuously rotating antenna) case. Fig 6, the bearing angle is 0(signal coming from top in Fig. 4). The composite rf signal contains some amplitude modulation (about 16 at twice the commutation frequency) in addition to the desired phase modulation. Note that the phase modulation error relative to an ideal (physically rotating)...

Handbook

Here is the completely updated and revised edition of the best selling Weather Satellite Handbook containing aJI the infor mation on the most sophisticated and effective spacecraft now n orbit Dr.Taggart has written this book to serve both the experienced amateur satellite enthusiast and the newcomer. The book is an introduction to satellite watching, providing atl the information required to construct a complete and highly effective ground station. Not just ideas, but solid Hardware designs...

Ascii Encoded Keyboard

Senders 720 lurplu* kivbo d wiih fMraJUH output. This nice jmt has bien Mtitlen up for proiecis numerous times in 73 and other compute mpio s. Sh Wr. 5 Lbs, . 1A30126 . . S3R AS ea. LOTS MORE SURPLUS COMPUTER PERIPHERAL EQUIPMENT AVAILABLE' CIRCLE READER SERVICE FOR OUR CATALOG Tirmt AdC PiKJif, MC V*5A AE wefcomii Plirtt Qiacr .e I omEi on credit CJrd Orders' EREE GIANT CATALOG of ELECTRONIC BARGAINS SPEAKER KITS COMPUTER MAT'L K I TS G ADGETS TOOLS POWER SUPPL fES SEMl'S T R AlySFORME RS...

Bellefontaine Oh

The Champaign Logan Amateur Radio Club. lnc will hold its annual hamfest on Sunday, June 14,1981, at a new location, The Logan County Fairgrounds, South Main Street and Lake Avenue, Beliefontaine OH. Admission is 1.50 in advance and 2.00 at the door trunk and table sales are 3.00 Available this year will be a bid table, door prizes (grand prize is 300.00), and free parking Talk-in on 146.52 and Hi-Point repeater. For more informalion, contact John L. Wentz W8HFK, Box 102. West Liberty OH 43357,...

Dynamic Device Drivers

Are you tired of working around all of the little obstacles that are built into your TRS-80 Ever wish that there was some way to 'repair' those imperfections Wetf here it isl The Dynamic Device Drivers package has all of these features Programmable Key De bounce Your keyboard can be tuned'' to your typing style. Programmable Repeating Key Function Every key has a repeat function. Lowercase Modification Support Your have a choice of standard or sh I ft-For-lowercase letters. (A lowercase...

Guelph Ont Can

The Guelph Amateur Radio Club will hoid the 6th annual Central Ontario Amateur Radio Fleamarket and Computer Fest on Saturday, June 13t 1981, at the Centennial Arena. College Avenue West, Gueiph, Ontario, Canada, Admission is S1.00, with children 12yearsand under admitted free. Admission for vendors is an additional 2.00. Tables are 5.00 each on a first-come basis. The hours are 8 00 am to 4 00 pm vendors may begin setting up at 6 00 am, There will be commercial displays. computer software and...

Lay

The powerful stations, known as Class B stations, was challenged and legal action resulted. The radio legislative situation in Congress brought about important stipulations through the enactment of two long-overdue bills. The House's White Bill, H R. 9971, one of many previously considered by committee, was finally voted on favorably March 15, 1926, placing the control of radio in the Department of Commerce. In the Senate, the Dill Bill, S 4027 (Fig, 1), introduced April 19, 1926, provided for...

Summer Specials

HAL 2304 Mhz dwxanwtft prvquencr 20003500 MHjj Model n tut Ji cortimue 230* UoM ij ft* ptPHgl Mi SN MoOerl Ut mtn high-gam prawns S6S 230 Mix Kit ccmMg icon' All ol tn at *e hin -. rr-fl win cg*< Vi i mg a Ht and (XJT j c Mthnf& foo frd notra -g f ctiHV and '0f AH Q1 rhe aiKrre 45 aogntondi Powi Hi iy k* Si* 96. *rtHi and BSMfr.r rf ffiff n PAGE MANUAL *TFK EACH KU

Fox Tango Corpora Tion

S. , Un Ptrim Art*-*, H vtlL J3*04 ONLY O NE NCAT SMALL ANTENNA FOR UP TO T fiANOSi EXCEL CNT FOR CON' li hk tr hu almost 1nvi5i& 1.e' ONLY O NE NCAT SMALL ANTENNA FOR UP TO T fiANOSi EXCEL CNT FOR CON' li hk tr hu almost 1nvi5i& 1.e' ron ALL MAKES. MODELS Of AMATEUR TRANSCEIVERS TRANSMITTERS -GUARANTEED FOR 2000 MA TTii SR 10OO WATTS CW INPUT FOR NOVICE AND ALL CLASS MA7EUR5I ron ALL MAKES. MODELS Of AMATEUR TRANSCEIVERS TRANSMITTERS -GUARANTEED FOR 2000 MA TTii SR 10OO WATTS CW INPUT...

Innova Tors In Digital Communica Tion

Add a few features the manufacturer forgot Most amateurs probably have relatively inexpensive solid-state multimeters that rail somewhere in the cla s between old lube-type VTVMs and the digital generation of multimeters Such middle generation multimeters can still suffice for many noncritical applications around any shack, After all, for occasional troubleshooting one does not need tin auto-zero'ngH auto-polarity, and auto-ranging digital marvel. So don't look forlornly at vour multimeter and...

Fourchannel Remote Control System

Advanced Analog Systems, Inc., has announced a four-channel remote control system kit with radio frequency carrier It is capable of two channels of analog and two channels of digital control through the use of a pulse code modulation technique. The transmitter modulates the rf carrier with a unique series of puises and the receiver decodes the pulses and generates appropriate anaiog and digital signals for the devices being controlled. the Potomac to Rosslyn VA and the idea seemed like a...

Volume Control

Allow the receiver and direction finder to warm up before making final calibration adjustments, however. After setting the receiver's volume control, the direction-finder gain adjustment is made. Increase the gain until the overload LED flashes on voice peaks. (If this adjustment is very low, the display will remain blanked.) Setting is not critical, but the overload LED should blink with a duty cycle between about 10 and 50 percent during norma speech. The direction-finder bearing control...

Ask For Your Price

2620 w, La Palma. (714) 761-3033 (213) 360-2040 Between Disneyland & Knott's Berry Farm new regular price 3496 limited number at old price 2695 999 Howard Ave., (415) 342-5757 5 miles south on 101 from S.F Airport. 2611 Telegraph Ave., (415) 451-5757 Hwy 24 Downtown. Left 27th off ramp. 5375 Kearny Villa Road (714) 560-4900 6265 Sepulveda Blvd. (213) 988-2212 San Diego Fwy at Victory Blvd. OVER-THE-COUNTER Mon. thru Sat 10AM to 5 30PM A A- ALUA& C * ALPHA'AM GO AMFHEhtOL' A RRL* ASTRON -W...

Equations

Equation (8) Phase ai S OT D + < 1 + or B - vc or D) where Kx (1 + sin 0) 2 Equation (9) + < 1 + M Equation(10) Es KXKYEA + Kx< 1 - KY> Ee + (1 - Kx)(1 - Kv) Ec + (1 K*) KYED Equation (11) Ka KXKY 1 4(1 + sin 61 (1 + cos 0) Fig. 4, Top view of a four-antenna array showing the interpolation of phase angle between opposite sides of the array, Fig. 4, Top view of a four-antenna array showing the interpolation of phase angle between opposite sides of the array,

F

The F d rai Communications Commission Private Radio Bureau Chief. Carlos V. Roberts (second from right), presents a Special Temporary Authority to experiment with spread spectrum transmission to Hal i. Fein stein WB3K0U (far left and Paul L Rtnaido W4RI. Dr. Michael J. Marcus (far right), Chief Technical Planning Staff of the Commission s Office of Science and Technology, witnesses the ceremonial occasion at the Commission's offices. March 6, 1981. Messrs. Fein stein and Rmasdo are two of 25...

Probably

Oscillator board is mounted at back of chassis. Surplus capacitor (front) includes gear drive. varies little when the vfo is tuned through its range, and resettability is excellent. The buffer stage uses an FET operated in class A to minimize loading on the vfo. The emitter-follower provides a low-impedance output for driving the Kenwood circuits. Temperature compensation requirements are minimal because of the high stability of the variable oscillator circuity In...

Worked Raag Members Of Greece

Sponsored by the Radio Amateur Association of Greece, this award is made available to amateurs in three categories. Class 1 European stations must v ork 100 RAAG members, DX stations need to work 50 stations Class 2 Europeans must work 75 SV RAAG members, DX stations require 30 member stations Class 3 Europeans must work 50 SV RAAG members, DX stations must work 15 SV RAAG members. There are no band or mode restrictions. The club sta tion SViSV counts three award points and five contacts for...

Wrinkles

The Great Aluminum Cover-Up, March, 1981, by Don Stauf-fer WBGYTH was read with interest. But do not plan to abandon the simple, easy processes I have developed in this shack, over the past 25 years as a ham. When we take a mini box that is crappy, cruddy, painted-over, ratty looking, or whatever, we give thai box a brand-new pro-fesslonal finish, quick as one, two, three. All surfaces of the old box are thoroughly sanded with a swirling motion. then dried with either a paper towel or shop...

Complete Repeater Starring The Mark C Supercontroller

ALL th unlqua Mur* which rr M Math 3CIft ftcctatm*d In rapHiw Power amplifier* pick your l H) ALL th unlqua Mur* which rr M Math 3CIft ftcctatm*d In rapHiw Ogtta' Torte dacoding Mbcroprocwaor control Power amplifier* pick your l H) MICRO CONTROL SPECIALITIES (617) 372-3442 23 Elm P *, QrmUni Ma. 01 34

Aac

Notice that some variables are duplicated, but due to user input they do not con cf in the program. the next mode to develop (the TEoi mode). The diameter is based on the Hn and TEqi limits for the desired frequency of use which is input to the computer by the user. This is done by the prompt, INPUT DESIGN FREQ OF OPERATION IN MHZ ' For example, we type in 1691, hit the enter key, and the computer prints out CUTOFF DIA. FOR DOMINANT MODE IS 10.535 CM. CUTOFF DIAMETER...

Apd

Fig. 3* Modifications to Clegg 22 er for 121.5-MHz ELT reception, XR 8,262500 MHz for 121,5-MHz input use International Crystal Manufacturing Co. catalog 433478 (10 North Lee, O t ahoma City OK 731021 Modifications include removal of VI3, VI4, and V75, Do noi remove VI2, This turn o f audio and reduces heat generated by unused tubes* A small pancake fan was mourned on top of the cabinet to provide cooling required for 24-hour operation. 5-minute interval detect a contact closure, then the...

Audio Scaler

Ft h measuring ntrimrls ejk si niK lnim L0 to 1*000 M H S mal ' sur. piwr c.i ht plug tramt r m n - indyded * Ote at for sniffing RF with pica up loop For high resolution audio meaturementa. multiplies U P m frequency, 12V DC AUTOMOTIVE iPJSTRUM& NT CLOCK APPLICATIONS- In lath utoelockt * liVOC& ri JnrtTL*, P i * r-10-.-'ii r 1 r V Featufti Bright 0 3 gri n dtolav IftMrnil try ** 'Q.& fK. dii tIXur Aule i VI a v t* i iti trtesj OQfl M O l gic. D lp4ay colof 1 Ll ir*W* TO bin . Wuti-fff...

Back Issues

BACK ISSUES Complete your collection- many are prime collectable now, classics in the Meld A full collection is an invaluable compendium o' radio and eiec-ironies knowledge STOOOO Single back issue before July 19& Q 3.00 ST0250 Single back j& sue alter July I960 3.50 STQ500 5 your ST1000 10 your cnoice S 14.00 ST2500 25 our ST2501 25 youf * free back issue catalogs are yours for the asking., .specify 73 Magazine, Kilobaud Microcomputing, and or 80 MiorocompuUng back issue catalog when...

Bankameroro

We Want to DEAL Call Us We'll Do It Your Way NOTE SEND 1.00 FOR OUR CURRENT CATALOG OF NEW AND RECONDITIONED EQUIPMENT. * also we periodically publish a list of unserviced equipment at great savings a bonanza for the experienced operator. to obtain the next unserviced barg-in list send a self addressed stamped envelope NOTE SEND 1.00 FOR OUR CURRENT CATALOG OF NEW AND RECONDITIONED EQUIPMENT. * also we periodically publish a list of unserviced equipment at great savings a bonanza for the...

Base Transceivers

136-174 MHz 220-240 MHz (w******) SPEC COMM REPEATER BOARDS & SUP-ASSEMBLIES T& esfc are Professional Commercial Grade Unris Designed tor Extreme Environments (-30 to +60 CL All equipment assembled & tested. For 2M, 220 MHz & New 450 MHz 6 channels. 0.23 uV Rcvr. Sens. 8 Pole Crystal & 4 Pole Ceramic iF Fltrs. Beautiful Audio RX + TX. Provision for CT CSS. Panel LEDs for PWR, Xmt Busy Very Reasonable Pricel Solid V Thk. Aircraft Aluminum

Binder S

Preserve and protect your collection for a lifetime Order those handsome red binders with gold lettering, 7.50 for 1.3 for 21.75, 6 lor 42.00. Postpaid within USA, please add S2,50 per order outside USA.) Check or money Orders & r> y. no phone or C.Q.O. orders 73 Binders, P.O. Box 5120. Philadelphia, PA 1S141. PfOTE Above tddreu for Binder tmij

Bovobs

IID73 ., - > 1DH1W> -4iB Drl( r Dilatai 377.9R AR22X1 0*f*U-DuhtUf ., J .O AB4U. ------fWnrU-Diibihrr Hftr0 AVR-I h MMitj& jJit) State Conttiil_______ 113.78 Ml SOU) Beipacy Synthorod Trumnir 317.-1 horib4i s > siumludc uin * ji tiuflik-t 2mu& MI'Iit . , , d 5-IT 2 Meter with ToneHaA . S-2 ft MHz . , lt i-arr m stHz vith t- P I - . r -f PB iS iHj m - - 1 , - S-4-TI2 44U Mlfz ) 12 Butten Tone Pad. r S-+T1H m> MHm UiBoMnoToorF . S-51 . . tHcr, 3 w utt mupul rtcme patJ

Bright Freq Counters

ANTENNA & AC SUPPLY) VOICE FREQUENCY ANNUNCIATION AVAILABLE MKJH ACCURACY 10MHi TIME BASE The A500 series counters are a real musi tor a JI hamshacks. Because the bands are crowded, gud ops must Know precisely iheir frequency BRIGHT counters give fast and accurate read outs Ask about the BRIGHT 1.1 GHz and commercial models.

Budapest Award

From Hungary, we receive word about the Budapest Award being offered by BRAL (Budapest Radio Amateur League). Only contacts made after January 1, 1976, will be valid Euro pean stations must work a total of 75 different HA5 or HG5 stations to qualify for this award. Duplicate OSOs do not count There are no band, mode, or time limitations. Endorsements will be made if requested at the time application is made. Have your confirmed con tacts verified by at least two amateurs or a local radio club...

Catalog Of Hardtofind

Also contains teml equipment plus wide selection of ioot kits and cases Jensen's neu catalog Is jam packed with more than 2000 quality hems. Your singV source for hard-ro-find precisjtm Tools and tool kits uied by eJertronic technicians, scientists, pngimicrs mstrumcnt mrihan-ics. schools, laboratories and governmenf agencies. Send for your free copy today

Cigar

3 J ELEMENT Si jPHYSIC ALLY STHONUR f MAN LOOP VAijl frQUAL SN GAIN PREAMP SUPERVERT R, AND i .100 MH TRANSMUTER THE Mi. -l'SH iN IOAI D WAS DhVLLOPLD Al OUR I H FOR OPTIMUM PERFORMANCE WITH LOW COSI 5 HIS IS NOT A COPY AL HOUGH WI ARE COPtEDi WE STRIVE TO MAINTAIN HL ORlUJNAL QUALITY UNDCRSTAND1NG OLtfi PRODUCTS MAKES SiRVjNG YOU BETTER 1 V R O RECEIVERS & ACC SSOREES AVAILAbLL HCKJ1S h 30 AM 4 30 FM C S T M F

Cu Rtis M Adds Speedmeter Output

An interesting enhancement of the popular 8044 CMOS keyer has been introduced by Curtis Electro Devices. Called the 8044M, this new integrated circuit adds an output designed to drive an analog meter for speed indication. Speed indication from 6 wpm to as high as 100 wpm can be accomplished by simply adding two capacitors, a resistor, and a 100-uA meter. The meter indication can be calibrated to be well within a 5 tolerance, The reading is stable, even at the lowest speeds The addition of two...

Dons Corner

Besr new buy in HE AC Transceivers Ken wood ISB30S, Reports are great, failures low, deliveries steady. Best used buy Collins KVVM2. Excellent backup rig or primary station at cheap prices if you look hard, Sut estion buv Round Emblem if possible, thev were buiti in the Try the new Mini RG-8 from Belden or other quality brands. Good for a KW to 3GMHZ. RG-59 outer diameter. Flexible and clearer than RG-8. 95 braid, foam, easy to put connectors on. Be sure to try Coax-SeaL New product on markei...

Ds

Self contained RTTY and CW terminal RTTY demodulator is now internal Best features of BOTH the DS2000 and ST5000 in one package. Simplified connections to your transceiver with standard phono connectors. Front panel tuning meter (rear panel scope connectors). Both 170Hz and 850Hz shifts for receive and transmit. Full high voltage loop1 compatible for printers, keyboards, and tape transmitters (TD's). Full length 72 character lines 24 line screen, Pretype either 255 character transmit buffer or...

Fcc Encourages Amateur Radio Experimentations

Consistent with a recent Commission amateur radio definition that, 'The Amateur Radio Service is for technically-in* ciined persons who wish to learn about and experiment with radio communications equipment and operating techniques'' (Commission Order of November 6. i960), interested radio amateurs are encouraged to experiment with new methods of transmission and new radio technologies. The Commission realizes that in certain instances proposed experiments may conflict with existing rules, and...

Field Day Award

The Puget Sound Council of Amateur Radio Clubs will issue a handsome certif cate for contacting any three of the six participating council clubs in the 1981 Field Day. Those clubs and their calls are Boeing Employees Amateur Radio Society (K7NWS) Hams Amateur Mobile Service Club (WA7LAW) Mike & Key Amateur Radio Club (K7LED) ML Baker Amateur Radio Club (K7SKW) N. Seattle Amateur Radio Club (W7DA) Radio Club of Tacoma (W7DK). o qualify for the certificate, you must exchange QSL cards with...

FM

220-225 MHz * 12 channels crystal controlled 10 watts * If you re not on 220, now is the time to try an Phone 1 (800) 233-0250 In PA (717) 299-7221) today to place your order or to request a detailed brochure describing these transceivers and related power supplies, antennas, amplifiers and other accessories, * Special quantity pricing is available on 13 the MARK 3 and FM-76 transceivers. Get your group together an d call for a quote on your requirements. Prices subject ro cham ithoul notice...

For The Novice

NEW, UPDATED EDITIONS OF OUR FAMOUS NOVICE CLASS STUDY GUIDE AND NOVICE THEORY TAPES NOVICE STUDY GUIDE SG7357 Her is a completely new study guide and reference book for the potenda1 ham This is not a questiontenswer memorization course Electronic and radio fundamentals are presented and explained In an easy to-under stand fashion, preparing I he beginner for tha Novice exam. Includes the latest FCC amateur regulations, as well as application forms Easily the best path Into the exciting vworld...

Free Catalog

Sernj * iftCt I of o -ftfas ram KAMTR0N1CS* IS A REGISTERED TRADEMARK Leas than 2 d8 noise figure. 20 dS gam Specify operating frequency when ordering MODE L P*30 VHF PREAMP, available in many versions to cover bands 30-300 MHi. MODEL P432 UHF PREAMP, available In versions to cover bands 300-650 MHz.

Frequency Counters

COMPLETE KlTSi consisting of every essential part needed to make your counter complete hal 400a 7 olglt counter with frequency rang of z ro to 600 m hi features two inputs one for low frequency and one for HIGM frequency automatic zero suppression time base is i 0 sec or t sec gate with optional 10 sec gate avatlasle accuracy - 001 . utuizes lomhi crystal s ppm 'GO'fti PLE TE iC IT r * * < - - * i < . . - .- -.a hal 300a 7 dfg't counter with frequency range of zero to 300 mhj features two...

Good News For Bad Guys

HFers take note At last word, the FCC was running fast, trying to escape Reagan s budget ax. The dust hasn't cleared, but Acting Chairman Lee said that the FY T81 budget included a pro* gram to phase out five special enforcement teams and reallocate their resources to establish ten smaller offices. Two were just opened Little Rock and St. Louis and they must be closed due to lack of funds, The follow* ing, that were to be opened, won't be Phoenix, Des Moines, Salt Lake City, Tulsa, Nashville,...

Ham Help

I want a circuit and construction article for a 4-250A in grounded*grid for HF. I will pay forcopyingand postage, or I will copy and return. Thank you, Gary Krlss VE7CGK 20776 114th Ave. Maple Ridge B.C. Canada V2X1K1 I have an electronic voltmeter model 3G2C made by Ballanline Laboratories, t would like a schematic or service manual or any information on this. J. Humphrey KB3T 618 Magee Ave. Patton PA 16668 I am iooking for instruction books for a KAAR Mfg. Co. TR* 5Q5N UHF FM base station and...

Highland Games Awaro

Local amateurs in Midlothian IL will be operating a Special Event Station during the Scottish Highland Games )n that community. A commemorative certificate suitable for framing will be issued for any contact made with a Midlothian station during the Games. Look for them on 10 through 80 meters Novice and phone, 0000 GMT June 13 until 2400 GMT June 14, 1981. To receive this certificate, send QSL and postage no envelope to the amateur contacted For further information, contact Bill McGreevy...

Home Electronics Troubleshooter

The three programs In this package will help us non-technical types to locate the most common problems in home electronic equipment. You'll be shown step-by-step procedures for 2, The simple and logical solution to the problem 3, A general cost-guide to commercial repairs It can be used to diagnose problems with these types of consumer electronic equipment BkWand Color TV s, Stereo Receivers Amplifiers, Turntables, Cassette and Eight-Track Decks, Portable and Table Radios, Portable Phonographs...

I I I I I I I Ii

Down Converter Kit Printed Circuit Board with ail parts for assembly 30.50 Vagi Anlenna Kit 22 dt gain with weatherproof Shielded enclosure .540,00 Tunable Power Supply Antenna Cookbook Tested and proven 9.95 Assembled nd Tested Down Converter w> tb 50' RG59 cable with 75 to 300 ohm adapt er ready to 'Deluxe Assiimniea end Jested Down Converter with 50f flG-59 cable antenna, power s uppiy, and adaptor 30 dB g*in 3 rl amps on board S249 95 Deluxe Converter Kit PCB with ait parts mcJudtng...

Infotech Mc Trimode Keyboard

A microprocessor controlled keyboard that generates Morse, RTTY. & ASCIt * 4 to 125 WPM in 1 WPM increments, * sidetone with tone and level adjustments * special keys AS, BK BT, ARh SK, CQ. DE * Built in quick brown for generator on all modes + 10 recallable, user programmable message memories of T20 characters each Design your own HF mobile from a full selection of top-quality U,S.*nnade stainless steel ball mounts- quick disconnects, masts, springs, and resonators. Vou can cover any...

Inline Watt Meter

WM-2000 reads power in 200 1000r 2000 watts. 3.5-30 MHz Incl. expanded VSWR scale. 1 Folds into its own base for portability, For boating, backpacking, mountaintopping, OSCAR. New portable quad extends the range of low power two meter transceivers by providing the gain and front-to back discrimination of a two element quad. Gives the gain of a linear amplifier but does not require additional battery power The entire beam slips into an 18ri carrying case to go in your suitcase. For use, it...

Integrated Circuits

Rum n jja* r ccmjs rm torn mwicToti imuuroi **W r jfia I jQ gm i A) 51 HCl fr'fc x ik tmpi t n-n .aw l .-5 r-x LHBOf- A 04H ' P. HUG T- f-- t at f-fOuiiu IT* HH fl JOST if vi r.rfffii ' in*- -_> r i I, ** K im 'w UH t n LKBn 15 I CMMO ' fc Hill ft * ttiOM W t. JHB - w e Bt*i i w pieman__ d s .u o fi ta mi ubam um . JS 11* iv 77 vnat 1 'rite' -' mu s ftB il M UptM UP h.bmi arn 11 rs J4f*, 1'. L UK 1 V MWV'W 4 dl < 1 t' iiwei jw yrtp* UJ4D1 1 tu MIWjIILMB _ _ , , tWIJJH t* P*4K i W .Ti J** *...

Wql

Don't forget tne other 73 Radio Book* Shop publications on RTTY, which are advertised in the magazine. They provide a valuable source of RTTY information. Above ail, I hope you plan to continue reading 73 where more articles of interest appear than anywhere else, not to mention the continuing saga of RTTY Loop, Moving right along, another big item in June is Field Day. I Know that many of the clubs are gearing up for that big weekend, June 27-28, but how many of them...

Je

Trj JG21S it a Dull Powt SLrfujhy nei - nestle id unable popiiveand nrp live output Miftafu A tapanlr ediuiiment Tar en al th funp ifi pratfritathft U r unliFtiiitd flppltcjtioni for iC mrT*nt vo ige rtquu' intnti Thi jupply can itca br i.nr. at i fcr-ffiF afkpufpDic 'rjriabfe * AdjUtlBl a epf-P' VJI L n t PTTd n t JVOC iSVDt * Output (4*ell IhJwev 5V > C J S CktiA 10VL C OrrtA 1 VPC V frOtimA. B o * t Wfii TE we. tan wilh Ihemul atfftota WDWH9 i. ' ,Jii' tua Sav I...

Jh

---DATA ACOUI& ITION (COhJTkMUF D) < PU A' 13 C-minli- fi.tH Wum.J *DC IL CC l-ftn A & Ct m ft lil*Ch MuPlI.I CJft T l C LCrv (D-pJt lfAC+ r Ht,ii. L rfla Q. M AC WML CM D- IHJfACaiir M kn li. camp (U.W*1 C*CiaiuLCN P-041D H tu i Ititv L,,h a Ac L c Pv id n L- A Co** < 40 LH. i DAi.untXP* Itm LHt.l

Jz

'ICS - Intermittent Communication Service (50Duly Cyclei i nol available at ymir local dulst. pi tue conlact us difecily. 2852 Walnut Unit E Tustin, CA 92680 I a IM (714)832-7770 Code reading makes ham radio more fun A code reader can add to the fun of ham radio by allowing you to copy many signals that are too complex or too fast to decode by ear. You can get in on such things as news-wire service transmissions. weather information ancf financial reports that are sent by radioteietype (RTTyi,...

Lh

WHrfVHfl ' Alt' 1 lOm i U < 1W4UIUI C PiO HlB> *CUHH II* UiCltWOtqifUr- IIF U CH n but m fKl II.H+ 1 LCD Dr t M.L,,, 0 pt. niv-a X aiU ITA L DH Lf Li U l-l AV 4+1 fulrr .Llt r T *l fi'l ihm* .1. > -. H W AV-S-ZIH rt bupin I l f Ht tTtl M m n H i l ), tJH.m t. n TttlM I f * UCUi HflJ' T L'1< d 4 IHl L ll J. 4 MUtlim ll-N tnn. Pulll' p.in1 IB MMtWPJ Strifll ht vS 'r.l I n Ml.h > 1

Hmf

Tnpcioci( tn.ttsgol iT.Hl fi-5 l d y flr calendar bnrifny backup anrt ii rrt Size irrr ru-, Comp J . t - . 'XI '' l'il.11 ' .'11' lE ' fi i iTLncH flE ) Ltn ' ac.' JCTN 3 hM1 MCPlti J.flnii H,i1fi IJ- hni . 1 i i i n itr Nf1111 ' I. in n*l J l'h .111 mrri ,in1 L1'. diEpliV li' p.nti.Hinl MfM I, r,- JC -I(iv> Cirxktl JT bil

Liu

All circuitry must be insulated from earth ground. ation because they were on hand, The motor relays are not especially critical as the current is relatively small, The brake relay must handle about 2 Amps plus the amount required by the motor Note that the motor relay contacts are in series with the brake relay contacts . This ensures that the motor will not run unless the brake is released. My 6-volt relays would not operate from the 5-volt power supply,...

Lu

Block diagram of the complete direction-finding system. Fig. 2. Geometry used to derive ihe signal received by a rotating antenna. Fig. 2. Geometry used to derive ihe signal received by a rotating antenna. Fig, 2 illustrates a simple antenna located at distance R, A and angle 6 from the reference position Assume the incoming signal is located far (relative to the wavelength, A) from the receiving

Microwave Receiver Down Converter

Low Noise Transistor H.P. Hot Carrier Mixer Diodes Voltage Tuned Oscillator Easily Installed Low Wind Resistance Weather Tight Case Chromate Coated Al Resists Corrosion ELECTRONIC HOBBY INNOVATIONS is proud to present to the Amateur Radio Market a high gain, low noise, modern technology S-Band Microwave receiver converter. This converter will let you explore the unknown frontier of Amateur and commercial radio, for your personal enjoyment. In this region of 1...

More Features

Automatic incrementing serial number from 0 to 999 can be inserted into buffer or message memory lor contests. Repeal lunctlon allows repetition ot any message memory with 1 to 99 seconds delay Lets you call CQ and repeat until answered. Two key lockout operation prevents lost characters dunng typing speed bursts. Clock option (496 only) send time in CW. Baudot. ASCII 24 hour iormat Set CW sending speed before or while sending. Tune switch with LEO keys transmitter for tuning. Tune key provides...

Multiband Broadside Pi Poles

VAC-20 40 75-50 VAC-10 15 20 40 119. 50 VAC-15 20 40- 89,50 VAC-15 20 40 75----- 119. 50 VAC-10 15 20 89,50 VAC-10 15 20 40 75 144.50 Helium fiJied for a lifetime of high efficiency Completely adjustable to precise resonance Power handling capability to 750 watts PEP Beautiful white 32 Fiberglass lower section Stainless 31* ' 17-7 tapered top whip section Very low weight. VAC-20 weighs t.5 ounces Ijw. ind drag. Holds vertical at high speed All chrome plated polished Drass hardware Mbdels for...

N Award From Nigeria

The Nigerian Amateur Radio Society wishes to announce its very popular 5N Award. To qualify for this award, applicants are required to work a minimum of five separate 5N stations of Nigeria. This award also is available to SWL stations on a heard basis. This award is issued for all CW, all phone, and mixed-mode contacts. There are no band or modelimitationsor time restrictions. Once you have attained the required number of contacts, have your hst verified by at least two local amateurs and...

Ncg Issb

THE ORP RIG WITH THE BIG RIG SOUND ACTIVE NOISE BLANKER RF GAIN CW SWITCH SQUELCH-MIC GAIN DIGITAL FREQUENCY DISPLAY-HI LO POWER SWITCH 13,8 VDC 5A POSITIVE OR NEGATIVF GROUND 9,5 x 8.5 x 2,5 AVAILABLE SOON 10-meter AM FM SSB. DEALER INQUIRY INVITED. 1275 N. GROVE ST. ANAHEIM. CALIF 92806 (714) 63 -4S41

Now Available Onv Tool Pouch Designed For Onv Safety Belt

At last* a safety bait designee to meet the safety needs of radio amateurs, radio stations TV stations boat owners painters, construct on workers, rnamienance people anyone with the need to ctimb now at an affordable price Quf ONV Safety Bell Ifl fitted witti twodrop forged steel1 Or' rings. Onloone is spliced a 3 toot length oi Vi' diameter nylon rope fitted with a drop lotQ& d steoH snap hook. The 3 wide nylon body comfort pad Is secured to 1V- wiae. 9500 it), tesi nyJor webbing, which Is...

Npn Silicon Rf Power Transistor

Deigned primarily fo use -n single udeband iinei> amputier Output applicators m citizen Liand and otliei communications equipment operating to 30 MHi. C aractprijtd Single Sideband ard Large S nal Amplifier Application Utilizing Low Level Modulation Specified 13 G V. 30 MHi Characteristics - Output Powii 12 W iPEP) Minimum EtfiC't-ncy 40 . (SSB) Output Power 4.0 W (CWl Minimum Efficiency 50 ICW) Minimum Pow f Gain 10 dB (PEP & CW> Common Collector Characterisation

Options

MFJ-53 AFSK PLUG-IN MODULE. 170 and B50 Hz shift. Output plugs into mic or phone patch lack for FSK with SSB rigs and AFSK with FM or AM rigs, 39.95 ( + 3). MFJ-54 LOOP KEYING PLUG-tN MODULE, 300Vh 60 ma loop keying circuit drives your RTTY printer Opto isolated TTL input for your computer to drive your primer. S29,95 ( + 3), MFJ-S1 CLOCK MODULE iMFj-496 only), Press key to send time in CW, Baudot or ASCfii. 24 hour format 29.95 ( + 53). BENCHER IAMBIC PADDLE. 42.95 (+ S4),

Other Study Guides

* extra class license study guioe SG108Q-Before gol ng far your 1x2 caH. It pays to be a master of the Exira class electronics theory. This study guide Is the Jogjcai extension of the 73 Iheory course. All the ne< xy necessary to pass the exam is presented. Antennas, transmission fines, bat are discussed, as well as icjse propagation, and specialized communication techniques This book is not a classroom lecture or memorization guide, but rather a logical presentation of the material that must...

Parts Parad

1 rir- Jl (y , fl-' --lAi J. ' wn *Sf - I J* ,r- y-E-' unpr 'r .r 1 ' a - iwi ' r- '1 L- wir--4 tttfi no ulli tomiimf rv hikr ml k mvti ctrfitf 41 cifw my (palw m 1 -VT3 J' i 1 . pirn l'A l'I kC- -J- T-P'J- l t -J- Tir -- jm ir fnli-n Lipp f nrrcf i-.DphAn l ' I n.1 jait i .p i r-, -.r r vi 'i 1111 I LI d LM -in Kcrn iiM.- i tcumwilti ruft PI iprrPiiiiiH i a I'd hn i*rtn f 60 0D loi *iri.ii i> hj D5 4 i *pr Ca if ift'l i n tliti

Prices Subject To Change

3 4 Watt Single Turn ITOP AOJUSTMEMTi Valuer 500J IK 2 5K bK QK i FiK 50K 1 D0K 250K BOOK 5Mw DIVIDUAL PRICING t 49 5& -9a 100-3 IK up .19 .17 .15 .12 GB174 1.95 lot Tq Qn.-zr Specify Bauffit 3355 - tVaium detifWii- AC 500 ACTOOO AC17DO DV 97Q0 DC frttQ 9 VAC 1,7 amp V C OO i 9 VOC 90C - 9 VAC 1,7 amp V C OO i 9 VOC 90C -

Proposed Rule

I 7.51 MR) Ride 51) Do I need to hjvr a copy of the Amateur Telecommunications ServJc flukes tt You musi keep a current cop* of Part 9 . FCC Rules for the Amalpur Ttie communications Services, in your AR station records. The Amateur Telecommunications Services Rulrs are published periodically by the Government Priming Office (fa) You must stay up to dalr W h changes to the Amaicur Tdecjommumcaiions Services Rules, Changes are found in thr Kedornl Register anti in other publications. Finally we...

Radio Telegraph Sending Devices

IF NOT IN STOCK AT YOUR DEALER, ORDER DIRECT FROM P.O. Box 28271 The HAM-KEY Co. St Louis. MO 63132 SBBpnlr * Dual lever squeeze paddle For use with all electronic keyers * Heavy base with non-slip rubber feet * Paddles reversible for wide or close Modef HK-2, same as HK 1 but less base for incorporation in vour own keyer. SI6.95 Add SI .00 Shipping 8r Handling CC-1P shielded cable & plug for HK-l S2.00 _ . ___t77 & Handling. w** i Anti-tip bracket. Can't tip * Navy type knob Heavy base....

Reconditioned And Lab Calibrated

Hf MAC 5EL.NAL LjtNtftATO'f 10 MHZ THRU 4H MM . AMt Vv OR I 'U1 M MOiiULATIGM CALIBRATE ATTENUATOR Vil IE IllD OUT n JI Ai> tXCU.1 l L& LEMftAlOtt Hf 41* S4GNAI SLRATOR X JWtf THfcLJ IiQQMhZ i_ i tih a I > AND MITIRID OUTPUT rtXFECI FOU ANCRAIT OR MICROWAVE WORK HT M A iMJ - .- t. kh-Z 'n- i v-Hl CAUSRAliC Ml fiKED OUll'V- CW Cfl lfOHV UXih T AM UMlt lAV SO-1J U VOR IL WIUTARY SKiftAL GENERATOR. 06 I iS < MHZ AND i29 9 tO S35 MHZ OUTPUT SiCnAlS INCLUDE VOtt, LOC Gl Ii'iSLUH. AN Q O...

Report

Electronic Information Service II, but it's all the same, Some traveE over phone lines, others are broadcast by TV stations. flight now. wars are predicted in Chicago where WGN and WFLD are in competition for their piece of the videotex* pie. And in Texas, the Texas Newspaper Publishers are trying their darndest to keep Bell from test ing their own information system, afraid that it will eventually cut into their classified ad rev enues. (You not only can present news on videotext, but shoppers...

Roe

At 300 baud, it requires (5 + 1-1 2J 300 seconds or 21.66. . . milliseconds to send each character, Since data is taken from the bus each 26,66, . . milliseconds, this creates a gap of 5 milliseconds between consecutive characters. When display of remote data is selected, the timing changes somewhat. All of the tri-state registers are removed from the data bus using their DOD1 control inputs, and the UART instate received data output is connected to the bus...

Rotators

Speech processors phone patches 2V rigs i ampljrerscw SSa filters antennas hf4 vhf more- now & future Ve 'ook lofward ro quot -'ig our nee< te Ask aboui delivery (o the Richmond Tidewaier areas 13017 BARNES SPRING ROAD MIDLOTHIAN, VIRGINIA 23113 429 fa04> 74 3851 13017 BARNES SPRING ROAD MIDLOTHIAN, VIRGINIA 23113 429 fa04> 74 3851

S

UHF (400 lo 512 MHz) models, lower power and FCC type accepted models also available. UHF (400 lo 512 MHz) models, lower power and FCC type accepted models also available. 2050 S. Bundy Or,. Los Angeles. CA 931 N. Euclid Anaheim, CA 92801 Butler, Missouri 64730 25 (213) 820-1234 (714) 772-9200 816 679-3127 TOLL FREE ORDER NUMBER I8QQI 421 5631 CaNf modems flieast call eoiteci on our regular numbers

SI

Wattmeter SWR Meter 169.50 ppd needs it, every ham can afford it 4-position Antenna Switch. Heavy duty coax switch rated at 2 kW PEP. Three positions for antennas (AUX may be used for dummy load). Fourth position parallels positions 1 and 2 for receive use only. Dual-reading RF Power Meter Switch to RMS or Peak. Three ranges 20f 200, and 2000 watts, full scale Built-in SWR Meter. Shows SWR from 1 1 to 7 1, Two-position SetiSWFT switch plus RF level control Calibrated for 10 meters,...

Software

From your disk (depending on how many disk drives you have). The program has built-in editing features that help you keep your log book up-to-date. There's also a command that lets you output your log entries to a printer for hard copy. In that next QSO, knock their socks off with your infallible memory. (T2) Wj n npn BH fc H-0UH PilBrbtirLVjqli NH imitt

Social Events

List rigs in this column are provided free of charge on a space-available basis. The following information should be included in every announcement sponsor eventt date, time, place, city. state, admission charge (if any), features, talk-in frequencies, and the name of whom to contact tor further information Announce-ments must be received two months prior to the month in which the event takes place. They should be sent directly to Editorial Offices, 73 Magazine, Pine Street, Peterborough NH...

Squares Award

In the stack of mail received last week, found a very interesting letter explaining a unique award being offered by our fnends in England. While this award may be impossible to achieve for the majority of western stations, operators throughout Europe who read this column might find the rules extremely challenging and within reach. To qualify for the award, ail contacts must be made alter December 31, 1978, to be valid. QSL cards must be submitted at the time of application and be arranged in...

Sstv Tape

SLOW SCAN TELEVISION TAPE-CT7350 Prize-winning programs from the 73 SSTV contest. Excellent 'or Demo 55.95 qsl cards 73 turns out a fantastic series of GSL cards at about halt the cost of having them done e1 e-whoie because I hey are run as a fill-In between priming books and other liems in lhe 73 Print Shop. 250 Style W QW0250 for 8 95', 500 Style W OWOSOO for 13 95*. 250 Style X_QX0250-for 8 95* 500 X QX0500, 250 Style Y-OY02SO for 8.95 Style Y-0V0500 for 13,95 delivery eLIBRARY SHELF...

Sulk Sales Manager

A sat Mgr manufacturers swear that they are not shipping much gear to these discounters, so there is no way in the world for them to fill orders once their past stock is out. Calls to some of them have shown clearly that they do not have the equipment to ship, so afl they are doing, really, is keeping anyone from selling equip-mem. We hams, being dedicated skinflints, would rather die than spend an extra buck for a rig. even if we have to wait until helE freezes...

T M

Michigan 06 U S A. Call TOLL FACE SOO 521 A* 14 or outllda. U. S. A 31 3) 994 4444 Toll Free Number 800-528-0180 (For orders only) 1900 MMr 1o 2& 0 MH* DOWN CONVERTER ThfS receiver is tunable a range ol 1900 to 2500 mc and is intended rot amateur radio use

The Failure

Another famous program, however, was not successful A satellite, built by world amateur radio operators in 1980 and placed on a European rocket, crashed into the ocean almost immediately after take-off. The AMSAT satellite and the rocket were lost, along with the hopes of amateurs who had worked for years building their satellite. The JS& A program was a success. But JS& A s program and the AMSAT failure have something in common-a great opportunity for the public. Let us explain. AMSAT...

The History of Ham Radio

Reprinted from QCC News, a publication of the Chicago Area Chapter of the QCWA. There had been no changes in radio legislation in fourteen years, and by 1926 there were over 700 applications on file with the Department of Commerce for radio broadcast station licenses and about 16,000 licensed radio amateurs operating in the United States, Of special interest to all was the allocation of frequencies above 2000 kc de cided upon by the Fourth National Radio Conference. (See Table 1J Broadcasters...