Info

One of the very few benefits of getting old is the ability to remember the way it was many years ago. Unfortunately, there is very tittle call for this talent. On the off chance that there are a few relative newcomers to amateur radio who have sucked in on the romanticized recollections of old-timers, let me regress for you and give you an idea of what hamming was like forty years ago. With the start of the war in Europe on September 3r 1939, most of the DX disappeared from 20m, Ten meters was...

Radio Telegraph Sending Devices

No need to attach to desk CC-3P shielded cable & pJug for HK-3M S2.49. Add .50 Shipping & Handling, Model AT Q anti-tip bracket oniv, to convert ar> v HK-3 to HK-3M. * Heavy base. No need to attach to desk * For use with all electronic keyers * Heavy base with non-slip rubber feet * Paddies reversible for wide or close finger spacing * For use with all electronic keyers * Heavy base with non-slip rubber feet * Paddies reversible for wide or close finger spacing CC-tP...

Iaru Region I Award

This award may be claimed by any licensed amateur who can produce evidence of having worked stations tocated in IARU Region L There are three levels of operating achievement Class I requires contact with all countries in IARU Region Class II requires contact with 35 countries within iARU Region Class 111 requires contact ,vith 20 IARU Region I countries. To be eligibEe, all contacts must be made after January 1. 1979- Special endorsements are given for single band or mode achievements, Members...

Scr Board

Tti si are Professional Commercial Grade Units Designed for Extreme Environments i- 30 to + 60 Cji All equipment assembled A tested. For 2Mt 220 MHz & New 450 MHz * Wide aynamc range' Reduces tv er load desense and IM * 6cie 6 5 KMl 11MB t 30KHii. (8 Pole Crystal Fltr * E'f audio oualily FaSt scjuelc ' * SCW100 mounted in shield housing * Completely dim& ici 1 oapS onn.,h Similar to SCR 100 encept with 12 Pote IF Fltr & 8 Resonator Front End Frit 1 Discriminator & Deviation Mir....

Output

O-Jf PUT StPASS t'JR AQ rFt il Fig. 3. Modifications you can make to your power supply, with a 3 Vi-digit counter capable of directly driving an LED display. An input filter, consisting of R101 and CIO , filters any noise off the input voltage being measured, and then the chip takes over. Analog signals appearing on pins 30 and 31 are internally processed by the chip. Resistor R103 and capacitor CI05 determine the rate at which the processing takes place normally about five times a second....

Mfc

Bij.lt rn 115 230 VAC Supply AM FM-CW SSB RTTY 6QdB Harmonics 6Od0 Spurious He,ivy Duiv Design Illuminated P nel IWtor Automate T HSwui hifig VSWR Prot t-t d f 13V A A, . t ssorv Stickt ( US Mtmufflt luted Bij.lt rn 115 230 VAC Supply AM FM-CW SSB RTTY 6QdB Harmonics 6Od0 Spurious He,ivy Duiv Design Illuminated P nel IWtor Automate T HSwui hifig VSWR Prot t-t d f 13V A A, . t ssorv Stickt ( US Mtmufflt luted

Mfj Kw Versa Tuner Iv

EXCLUSIVE RF AMMETER insures maximum power to antenna at minimum SWR. Built-in dummy load. This is MFJ't best 3 KW Versa Tuner tV. The MFJ 984 Deluxe 3 KW Versa Tuner IV gives you a combination of quaiity, performance, and features that othere can 1 touch at this pnee. An exclusive 10 amp FF ammeter insures maximum power to antenna at minimum SWR. A separate meter gives SWR. forward, reflected power in 2 ranges (2000 and 200 watts) Versatile antenna switch Jets you select 2 coax lines thru...

Uk

Viwki. aft 1 r 'l MUT, r iiIii-pbif iirii-i IUI iUMMf, iBifwit m tU4 11 144 MHf. n nl-mB'- t m m30-1 i if ml v- i hi.l. 4l1I tl l I t fll I nTll 11 takpq tii'tatUHF iJlii tM Stl -M 1 .' irwr AU 1 t4 t I H Afln 4 4 f kiflll p. 1 Fn . A4-WI x-13 1 4 -'mi lixjiil J lihc T1KJ liJUKf IHhlM 1 ihi i Di Tn 1 1 bv Di Tic t tb- hDi OQ h -q . kW gt f T Vahinff ifl

T

Fig. 6. .SB oscillator crystal modification for 40 more, a before b after swing of about 8 kHz. The amount of swing obtainable is now controlled by the capacitance of the RC-174 A cable. Removing the shield from the cable from the end nearest the variable capacitor will increase the swing up to a maximum of 15 kHz How To Increase the Number of Channels Bandwidth Below are three ways to increase the bandwidth of your transceiver. One involves using the LSB sec- tion and the other two make use of...

Ceramic If Filters

IS' MODEM CABLES 10 22ga wire wfshlflld, DS25P conn 4 Gti'.12fti T Cower on one end SO es iO f 000 rtlre w nhJ ld, U02SP conn amp l cover on ant flnrf S6.S tu. 1UU0.0Q Open Frame Rugged grea lor mobile use 14 50 ea 5 20 00 22 pins 2 08ea 10 17 00 part movement 7101 on none on spst 7103 on'off on spst 7106 on.'noneflon spst 6 TV GAMES on 1 CHIP Gen Instr AY-3-8500-1 26 Pm Plastic Case EVERYDAY low PRICE 7.50 ea

Watt Audio Amp

SMALL SINGLF HTERlil IC AKO CDtfP HfNTS flT ON A i 3 PC BDAfiD .IMCLUD-Fn ftlt S ON 1 OC IbUl-Ai FDR AMY PflOJFn r THftl NEEDS tKE f KSm UMP LESS 1 HAH 3'- T D 5 WATTS COWPflTlBlt WITH st-ni SDunn KM alapiv 1 sn gzt options- 4 noise f ii tfuhhui r'v Ay3-6910 PROGRAMMABLE SOUND GENERATOR The AY3-8910 ks a 4 l pin LSI chip with three oscMiators three amplHude controls, programmable noise generator three mixers, an envelope generator, and three D A converters that are controlled by B B1T WORDS. No...

Hitachi Oscilloscopes

Iingi jrid iluii trace, t amp and 30 MHz AH our high s rv trmy Hitachi oscilkrtctxxn re bijii ID defnanding Hitachi qujlity Stan-iar h and ari jacked by a 2y lt t arraniv. fhcy're able to rnejsuri' signal s low 11 ImV rliSfision with X5 vertical magnifier , t' a pfciin rion vo'j woaVi 1 n-rd on ,my thor or 30 MH opi , Pius Z axti modulation trace rotation, front panel X-Y 3 gt .' dt' K for I four utope modelt, and X 10 maqfT cjttori And, ioth 30 MH oscilloscopes o Me internal signal delay...

Co

All I COM oortabl me deiignrd whfi per ofrnance and '. avjtc. ma allo, nr e '-r o powpr, and ext rnai antenna hookup IUHF ponnfrctor ,inri iht quickchange fold mVav tti .1 ti111 mourn make thum ideal fot mobile operation. All controls, including tingle knob timing diato ami lighted rrhiters, are located on The front panel as art mic dnd Kt amp rnjJ ipe.jVer ptijflfs In lt 4dil gt ori to dry cell type C ban try operation anil Th Lii'T-rina tC 3P5 powrr ,L, -H gt ly ICON offflr 4 nicarl htflary...

Mo Residents Call Collect

Jones JV6DOB i7779 Vierra Canyon Salinas CA 93907 this simple meter eases antenna tuning or many years 1 have used two field-strength meters, and they are still in use. I shall give credit to Jo Jennings W6EI deceased , for he is the person who showed me the simple circuit. This little gadget is non-frequency selective. I have used it from 2 meters through 160 meters. The telescoping antenna may be adjusted to its shortest length when working with 2 meters to keep the needle on scale....

Lc

-------- ' nil tf af ,q mot flcninrfn 9550 Chesapeake Drive San Diego, California 92T23 714 565-8402 TERMS MC - VfSA - AE - CH CK -MO COO in U S Funds Please add 10 ro a maxjmum of tq O tor shipping, handling and insufanco Orders outside of USA amp Canada, please add 20 00 addillonal to rnverei' sbiomen . California residents add Sales Ts if i , t t 1 ft hp 1 f Ji if i , t t 1 ft hp 1 f Ji I know you are interested in new things, so I thought 1 would write to tell you about the system which we...

Hy Gain Tower Master And Teletower Crankups

DifBcr factory .h meni to ve fr in it expand Call for our compctitrve quote on ttvaie tovwn Wt can in n owver twies from stock O dUaw you to COfnpJate foundation MfOTk M iit tower 41 being prfP3J o fot ihiprnini Going 2m All-Mode with Yaesu's FT-225RD Glenn W, Mai we H 6QJF 9337 Gotham Street Downey CA 90241 FM has been around since 1920, give or take a few years. 11 has been just in recent years that the current crop of hams discovered how extremely useful FM equipment is when used mobile. All...

Digital Thermometer

4 Dual niD -- imn ni'Qi control let mi do r nuhi.l i O' duijl mortlterlnfl - ContinuOiJi LE B d r. i11 I a v ACCtKliy '1 nom.n i Sei fry ' T i' C i'ut -Budioti Shitt M nul cm A.C Jdapt lt r ei -11 e-E-E .'nl 3 ajLo Th J fl 1 o62 Ki ASCI l E ueorjad Kdyhoir Kil can ht llitirrlgcadl into ItWI my fiom-pu for ystam, Th JE610 Kit cornai torn with to industrial grid iwTch HHibiy I6 Ways , IC , HKiitn. prmrwi winrtfl bO fdr T gt w tvvb04rd aemblv ' iuirn - V t amp OmA - 12V 10mA tcr crpvition, SO Kvyi...

Tentec Omni D

Amateur equipment accessaries amp antennas. Amateur amp commercial repair service 2317 Vance JadtMn Rd.San Antonio, TX 78213 The ultimate answer for eliminating the damaging effects ot antenna weight on your rotor____itTs the File any taper tower or can bo used with MM top Utilizing precision ground 4 hardened bill-type Ihrufit bearing, Eliminates the damaging effect on youi rotor. Cri amp chF cash, money order. Visa, M a s te rC hfl r g e. compete. Also available for msst pipe lor S59 95

Dx

Cain K1TN 306 Vernon Avenue Vernon CT 06066 January, 1980, not only ushered in a new decade unless you're progressive and follow thedecade beginsm 81 theory , but it also may have brought the bad news that thesunspot peak has come and gone. Ted Cohen N4XX says the monthly mean sunspot number from the Zurich observatory for December was 182.2. down from November's 185.0. and the figures tor January were lower still. Boo. Hiss. Several more excellent propagation years are in store,...

Associates

Robert Baker WB2GFE Sanger Gr en Ua e Incram KJ WJ L.irry Kahaner WB2NEL Joe Kaaser G3ZCZ HI Pasrernah WA amp JTF John Schufli tt-iFA Peter Std K20AW Aline Com lu Mtj Ko n Rur hal N.incy Clampa Mater Stone Louise HoicJswoMh jerry MemheJ Loi Mugf rd Rira Rivarrt H -iJ Stephen Phoebe Ta y I Of the ham business . . . past, present. and projections for the future. The big event was my discussion of three proposed new modes of ham communications for the 80s and a new type of ham gear construction...

Pat No

40 tei tenda 23 to 40 with Dreakover al grouna leve SS extends vom 23 10 wMh breakover at ground level All steel constructed. Concrete sleeve available tor all P.O. Bok 3412 Enid, OK 73701 40S- Available ior digits 2t 3f 4, 5, 6, 7. 8t 9 0, and . Also for digits At B, Ct D. Relay output SPST Vz amp. Operates on any DC voltage 12 to 30 volts. Sequence decoder. Connects to 12-digit Three digits must appear in correct order and timing to dose output relay. For foolproof secure signalling. Send for...

Heath Introduces New Remote Coax Switch

Heath Company has announced a new remote coax switch. The Heathkit SA-1400 allows the amateur radio operator to select any of 5 antennas by simply turning a knob at his bench. Used with the SA-1480, one feedline from the inside control box to the outside switching box repfaces 5 separate antenna ca bles. saving coaxial cable. A special grounding position grounds all antennas for light ning protection. A specially shielded switching box protects the switching circuitry from the elements....

Rac

Harbor HIvd. f uifertort CA 92634 I hope that by now you have finished assembling your power supply as presented in part f of this arti-cleP and are ready to put the finishing touches on your project In this installment, 1 w ill describe the construction of the digital panel meters DPM j used to display voltage and current and describe a tew circuit improvements. As mentioned in part l the DPMs are optional, and if you used analog panel meters, simply skip to the...

Shipping Information

ORDERS OVER 15.00 WILL BE SHIPPED POSTPAID EXCEPT ON ITEMS WHERE ADDITIONAL CHARGES ARE REQUESTED. ON ORDERS LESS THAN 15 00 PLEASE INCLUDE ADDITIONAL 1 00 FOR HANDLING AND MAILING CHARGES. SEND SASE FOR FREE FLYER p, 0. BOX 1101 finfc SOUTHGATE, MiCH. 48195 HAL HAROLD C NOWLAND PHONE 313 265-1782 old pricing, deposit only required 2 2 Filters, your choice 96.00 ea. Houston, Teias 77002 - 713 658 0268 and keep your eyes where they belong There are many cases where one desires simply to check a...

Strobe

In the downconverter box can get excessively high. Painting the box white and, if possible, positioning it to be shaded by the antenna will keep its temperature at a more reasonable level. Use very smatf drops of epoxy to attach the mixer tines to the base board. The length of the piece of small coaxial cabie between the LO and the mixer line should not The Atlanta Radio Club is offering two cash scholarships ot 500 each this year Applicants must be licensed amateurs and must be high-school...

The Bullet Electronics Se Sound Effects Generator

As a boy. the ability to make the sound of a six-shooter or of a machine gun was a prerequisite for growing up on the west side of townf Today's children, however. do not need to strain their vocal chords instead, they can use the Bullet Electronics SE-01 Sound Effects Generator, The SE-G1 is a complete sound effects Kit which is built around he Texas Instruments SN76477 integrated circuit. The SN76477 is a complex sound generator which employs ana log and digital circuitry in one 28-pin dual...

Rt

Want a 10-meter rig that is cheap, easy to use, and provides up to 17-MHz coverage If so, read on and see how you can change a 40-channel SSB CB into a convenient mobile package for just a few bucks and an hour's time. The J,C. Penney Model no. 6246 catalog 981-8378 and the Sears Road talker 40 934.38260700 are 40-chan-nel AM SSB transceivers using the same phase locked Penney model has an excellent instruction manual which contains a good explanation of how PLL circuits work, as well as...

Mfj Keyers

Mfj 8044 Keyer

All have dot-dash memories, weight control, solid state keying. RF proof. J The NEW MFJ-406 Deluxe Electronic Keyer sends iambtc, automatic, sem- automatic, man ual. Use squeeze, single lever or siiaight key. Socket lor external Curtis memory, random coa generator, keyboard. Opimnal cubic S3 00 Iambic operation with squeeze key. Dol dash insertion. Semiautomatic bug operation pro vides automatic dots and manual dashes. Dot-dash memory, self completing dots and dashes, iam...

Linear Translation Department

Northern California now has an operational two-meter inband linear translator. The following report from Neit Lewis WB6VIV tells the story On Sunday, January 6, 1980, narrowband communicators ac tivated a 2-meter SSB CW tinear translator. The SSB-CW translator, with a 600-kHz offset, is being operated at an interim site in the hills of Oakland. California, approximately 800 feet above sea evel. Signal quality reports from amateurs throughout the San Francisco Bay area were ex cedent The...

Ycj Ycs Ycqe

20 0t 450t 45.Qt 124.01 60 0i 35.0 74 lt K 45SA 1 amp 4 0 lt TIOCM 255 Ot 515 0t 730,0t 415-Ot t90 0C 46 0C 45. 60. QC 1,50-0 I75-0C Digitat Display Communications Recflivef with CPU Digital Clnck and Timar e 0 7h Thru 29.9 MM Covcr qi' with 1 kHz Readout Computer technology and convenience lea ttjf lt er- aoLtghi r j-tHer ih FRG-7Q0 j digiU iiisplav gefltiit co ra ,- r r iver lot the diurnminating iWL. The digital clock and tiimei contrulled by a CPU iCentra Procpssing UniO chip, will --aM uut...

Tgg

M'ldei lfl t rarodira kw p f Modal 19 hne-i KW PEP Model 333 dummy loau att metei Fevorite Lightweight Portable 2150 watt rating Ait Cooled. Ideat field service unit for mobile 2 way iadio C8di marine, business band. Best for QRP amateur use, CBf with zero to 5 watts full seal o low powef range. i ttia-i I I lt 7 m uim wi toiM in bji a ft so o o no 'iliifjninfl nglr i fit l gt r,d tBB.50 High Power - 100Q WATT RAT IMG - Oil Cooled model 334A dummy load wattmeter. Our most popular combination...

Dentron Announces New Glab Linear

DenTron Radio Company has introduced an improved model of its popular GLA-1000 linear amplifier, the GLA-1000B, Featuring a tuned input circuit for consistent 50-0hm input impedances. the new unit is the smallest and most economical 1200-Watt SSB 800-Watt CW linear amplifier ever offered to amateurs. DenTron has also added a new innovation in amateur linear amplifiers, namely a frontpanel antenna switch, designed to allow user selection of either a dummy ioad such as a DenTron Big Dummy or an...