All Other Values

BCD-io-a'ec ma conversion for 1 digit. Fig. 5. Examples of BCD inputs to the programmable I 0-MHz steps from 28 MHz to 29 MHz The (eft-hand switch is restricted to this range because that is all that is needed for 10-meter operation. In fact, all the even number positions on the left-hand switch will give an operating frequency from 28.0 MHz to 28.99 MHz and all the odd number positions will give an operating frequency from 29.00 MHz to 29.99 MHz. This js because only the least...

Model

MODEL PLF-2 Improves weaK signals as well as image ion of mosl re or preamp Includes pwr supp vtrta*. fc* fc rvvnn O J null O J IIMQ I and spurious rejection of most receivers Direct switching iitfBBi VAC wired & MODEL PLF2E 240 VAC 5060 Hz operation 54 95 MOOEL PT-2 . For transceiver use Continuously tunable from 6 to 160 meters Features dual gate FET transistor amplifier for improved receiver sensitivity and low noise figure Requires no transceiver modifications and can han die up to 250W...

Dxing In The Eighties

Unlike other phases of amateur radio, DXing depends on the world political situation and on each country's relationship with other countries. A world war is the extreme example when amateur radio simply ceases to exist. Luckily, this has not happened for nearly forty years, Otherwise, during times of political normalcy, when only three or four world crises are in progress at a time, DXing is affected but not completely precluded, In 1980, there's the Russian woodpecker, that dratted...

Dealer Directory

Midland. Anv com, DenTron. KLM, Swan, Drake. Ten-Toe. Wilson, SSI. MTJ. Hv-iJain, Lunar, Nye-Viking. IktW, Redi-kilowatt, CushCrafl. Mo& ky, Hip Signal. hpo, etc. FulE Service SlOrc h'niiLuia tJectrurttes. 1WIS Siftra Avf,, tunlunu CA 22-7710. list iieu'i newest Amateur Radio store New & iiwi-d Armieui Kudfo inks & service. We feature Kenwood, ICOM, KDK, Yaesu, Ten-Tec. VHF titiginecrinj A many more, shiver Radio, Inc 1.178 Su. Hncom A -, Silt Jose CA...

Info

Return the FT-101 switch to the PTT position. Adjust other bands for 170 Hertz below carrier in the same manner, remembering to set the RTTY bandswitch and change the shorting alligator clip for the desired carrier or space frequency. The frequencies for the space frequency on the other bands are 7.090, 14 090, 21 090, and 28.090 MHz. These are in the portion of the bands normally operated by RTTY. Set the carrier frequency 170 Hertz higher to make trimmer adjustment to 0000 kHz...

Icom

2112- 116th Avenue NE Bellevue, WA 98004 3331 Towerwooo Dr., Suite 30 7 Dallas, IX 75234 Actual size Cut out and put the ICOM IC-2A in the palm of your hand The Question we seem to get most often from our customers operating at 45 V dc at 22.2 At typically providing 600 Watts rf output from the hybrid output combiner. Driving power required is 50 Watts, typical. Frequency coverage is 1.8 MHz through 21.5 MHz, with provision tor four auxiliary bands. Duty cycle is continuous for SSB voice...

F

ig. 7 The rear panel of the converter. Fig. 8. Interchassis wiring. jsl 96 73 Magazine * July, 1980 It is interesting to note that, with the M-80 interface, the same amount of data can be transmitted in the CW mode as with a 100 wpni teletype station However, since not everyone has updated his equipment to microprocessor- or computer-oriented operation set, we still need the capability of contacting stations using teletype equipment Modifying the Yaesu F F-101 for FSK operation is relatively...

Champion Message Memory Keyer

St& t*aHite-Art-CMQS Circuitry A, Six 50 character messages B. Twelve 25 character messages 'C 27 combinatipns of message C programming t Records at arty speed - pfays t any speed Memory operating LED Us* * Of daily OSO or contest s Sett completing dots and dashes iambic Keying with any squeeze paddte *& 50 w,p,m. Speed, volume, tone tune und weight controls tow current drain CMOS battery operation portable Rear panei Jack for luxihary power Deluxe quarter inch jacks tor keying and...

Package Specials

TXA5-3, PA5, FMA5, and TVC IB BASIC MODULE PACKAGE 225 ppc 2 frequency exciter add 30 NE64535 )ow noise downconverter .add 30 Packaged TVC-4 downconverter. add 35 Less TVC-IB downconverter . . substract 40 SEND SELF ADDRESSED STAMPED ENVELOPE FOR COMPLETE CATALOG AMD ATV INFO. We have all your ATV needs Antennas, Cameras, Repeaters, Video Monitors, Preamp, Linears, Test Equipment, and more. 19 years in ATV. Check, Money Order or Credit Card by mail. Credit Card orders call (213) 447-4565 Joseph...

Boston Ma

National Computer Shows (formerly Northeast Expositions) will hold the Northeast Personal and Business Computer Show from Thursday, November 20, through Sunday, November 23, 1980r at Hynes Auditorium, Boston MA. transformer P N PU015-A01 (Waterman Products Co,, lnc Philadelphia PA) for an OS-51 USM-24C oscilloscope. I will pay a reasonable price for these parts. Elmer K Melvin WA8DJY 5050 New Market Road Hillsboro OH 45133 I need a schematic and or circuit information for a suitable -j - . .' -...

Here

Modification of L3 Photo C A front view of the OX-6O6 with its top cover removed, Photo C A front view of the OX-6O6 with its top cover removed, capacitors or ground A small piece of plastic electrical tape can be placed over the exposed end of the wire, and then the wire can be bent under the coil. Locate the 68-pF capacitor C21 under the chassis, This capacitor is connected from, the bandswiteh Place a 50-pF capac itor in parallel with this capacitor. This...

Metroplex

The New York City Metropolitan Area's most sophisticated system of inter-linked repeaters has entered Phase II of its operations and improved its own htgh standards. Metroplex was conceived in January, 1978p by K2KLN and WB2MGB to establish repeaters on alt allocated FCC frequencies use all available modes provide 24-hour emergency communications and provide a forum for east coast and worldwide amateur radio operators via a 2-meter 10-meter FM link. Club members have already contacted over 35...

Ordering Instructions

Check, money order, credit cards, or COD orders welcome. (Mastercharge and VISA only) No personal checks or certified personal checks for foreign countrys accepted. Money order or cashier's check in U.S. funds only, No COD available to any foreign country. Letters of credit are not acceptable, COD1 by UPS will be charged a 2*00 handling charge plus shipping. 00 by mail will be charged 1.00 handling charge, plus COD charges by post office, plus shipping. Minimum shipping by UPS is 2-00 and 35C...

Ordering Call

73 D1P0LE AND LONG-WIRE ANTENNAS 8K1016 by Edward M Noli W3FQJ. This is the first collection of virtually every type of wire antenna used by amateurs. Includes dimensions, configurations, and defaced construction data for 73 different antenna types. Appendices describe the construction of noise bridges, line tuners, and data on measuring resonant frequency, velocity factor, and swr 5 50 * THE GIANT BOOK OF AMATEUR RADIO ANTENNAS With the GIANT Book of Amateur Radio Antennas BK1104 by your...

Ac Line Frequency Meter

48-52 and 58-62 Hi 100-150 VAC using ten reeds. 3W round sealed. H.H. STEcht mfg. 2 lbs. sh. wi 974-9364, unused 27*95 for use with 2-32 Mh receivers having 455 Khz IPs US6. LSB, AMt CW, FSK, and FAX. Input voltage 0.1 to 10 V-rms. Requires 115 230 VAC 50-60 Hz. 5Vix 19x1 V 2, 28 lbs. sh. Used, reparable . 145.00 Prices F.0B. Lima, 0. VISAr MflSTERCAHD Accepted, Send for our Nbw FHEE SURPLUS CATALOG Today Addrass Dept. 73 Phone 4*9 227-6573 1016 E, EUREKA - Bo* M05 * LJMAr OHIO 4500 Super Color...

Separate Receiver Antenna Jack

For use with separate receiving antenna, linear amplifier with full break-in (QSK) or rransverters. FRONT PANEL HEADPHONE AND MICROPHONE JACKS, Convenient. DIGITAL READOUT Six 0 3 red LEDs BROADBAND DESIGN. For easy operation. Instant band change no tuneup of receiver or final amplifier. From the pioneer, SUPER TRANSMITTER. Solid state all the way. Stable, reliable, easy to use. 200 WAITS INPUT. On all bands including 10 meters (with 50 ohm toad). High 5WR does not automatically limit you to a...

Automatic Sideband Selection

And you can reverse it with the mode switch. SUPER AUDIO, A TEN-TEC trademark. Proper shaping plus low distortion, IMPECCABLE SIGNAL. Clean. Easily exceeding FCC requirements, thanks to meticulous design, fine components, and conservative ratings. HIGH STABILITY Deviation is no more than 15 cycles per degree temperature change after warm-up. HIGH ARTICULATION KEYING. 2V4 msec rise and decay time for sharp, clean keying. BUILT-IN SPEAKER. Built into the bottom of ihe cabinet shell. Compression...

L

Many builders folldw the rule of breadboarding all circuits before building a final version of a piece of equipment. If you are one of these persons, then you will want to jump ahead to the stages of building and testing before working through this one. even though some of the general points here can ease potential problems in bread-boarding. Modern construction techniques permit many types of equipment to be breadboarded and built simultaneously. Using a perfboard or circuit board as a...

Hustler Meter Fixed Station Mounting

A new mounting kitr Model MKR-2, is now available for con verting Hostlers line of series-fed mobile VHF antennas to fixed station operation. With the appropriate VHF antenna installed and tuned, the MKR-2 is ideally suited for temporary field day use or permanent installation for local QSOs The MKR-2 radial kit consists of a heavy-duty zinc-plated mast bracket and hardware with three 19 decoupling radials for correct feedpoini impedance. It accepts any VHF antenna with a standard 3 8 x 24...

Kjm

Relative to my letter published in the Aprif 73 and the mystery of my calt K6JM being used by a television translator at Gillette, Wyoming The mystery has since been resolved. A letter from the TV station's manager explained that there had been a typo on the license, and subsequently this was corrected to K06JM. A letter from the FCC Public Radio Division admitted to nothing, but confirmed that K06JM was legitimate, I was unaware that translators associated with TV sla tions were being issued...

Tespcompact Sie Multiple Drivi M Elements

TET, tin leader in wideband antenna design. Is proud to an noun a- rorallv now concept in antenna design wrii' ihr j new TE33SP Fh -TE33SP employs two driven elements to achieve previously unattainable performance from j mbdnd yagi Row i k applied to the radiator and coupted nprjiicjh a rigid phasing Hnr operates in conjunction wi h j specialty engineered printed circuit board to -rOYidt ihe require J .- -1 --shift lor full si d performance on ach frmd This muUi efemenl duvi' network cumtJineLi...

Tuf

6502 based single board with full ASCII keyboard jnd 20 column tliitrrnai pnnter 20 Char alphanumeric display, ROM monitor, tulty expandable 4375.00. 4K version 450 UQ -IK Assembler S65.00, QK Basic Interpreter 100.00 Special smalJ power supply for AJM65 assem in frame S49.00 Compl ts AlMfiS in trim briefcase with power supply S465.0C, Molded plastic enclosura to tit A mb plus potter supply J47.50. Speaal Package Prrc 4K AJM QK Basic power supply. CJOrnel 1594 P0 V'M Super Elf U pm mpan amp icn...

Dx Awards From Sweden

A few months ago, we outlined some very popular awards made available to amateurs by the SSAt the national society of radio amateurs in Sweden, Since that time, I've become familiar with several other award sponsors in that country and wish to share them with you now. In order to make the province of Dalsland, Sweden, better known and to increase the activity of the amateurs in that region, the Melleruds Radio Club SK6CM decided to issue the Bull Award 1 To qualify for this diploma, stations in...

July Specials

ATF 417 pre-amp net Special 19.95 MRF 901 UHF transistors, 1 GHz COMF1 til KITS CONSlSTfNG OF EVERY ESSENTIAL PART NEEDED TO WAKE YOUR COUNTER COMPLETE HAL MOA 7-DIGIT COUNTER WITH FR QU NCT RANGE OF ZERO TO 600 MH FEATURES TWO INPUTS ONE POR LOW FREQUENCY AND ONE FOR high FREQUENCY AUTOMATIC ZERO SUPPRESSION TIME BASE IS 1 0 SEC OR 1 SEC GATE WITH OPTIONAL m SEC GATE AVAILABLE ACCURACY i 001 . UTILIZES 10-MHz CRYSTAL 5 PPM.

J

Dave Mann K2AGZ 3 Daniel Lane Kinnelon NJ 07405 RTTY, to me an arcane, mysterious mode Ihal I deliberately avoided for years, has finally gotten to me. I had sidestepped it on the theory that since inanimate objects are unpredictably perverse, I would rather not have any truck with it. People are bad enough, but at least they can be dealt with lo some extent, however slight. But when you're dealing with machines and gadgets. the only way to overcome their occasional idiosyncrasies is to lake a...

Accessories For Hamd Held Xcvrs

Wail Mount Oidrg amp f Sp 4ur Mrc B l gt t i Statvc LffJlft f Cdrp y Cm TtJrtcopt Antanna 5 y r 2 Toi, C r ess tif lt Encoder ACCESSORIES FOR SOLID STATE XCVRS 17 Amp SpmfcBT wiin Powet Supply D ui Agmiout Coumet Irwrul Ptowr Supplv Ktfr nil P WT-' Supfdy Oig-Ui MtrTior r Shift Antenna Turtfi Rerrwi VFO SpM ftr Sqwkw f tBh

MRF

20, 10 20,10 12.50 12,65 12.65 17.99 20. 10 25,00 12,00 II .00 GERMANIUM PNP POWER TRANSISTORS T0-3 CASE GP1600 wi11 replace the 2N1529 - 2N1560 Cev BVCES 75 V Cev 8VECQ 60 Ebv 8VEB0 40 Cot lector current 1 5A 150W 12 V 5 Amp REGULATOR LAS1512A 78H12KC 5,50 each RCA POWER TRANSISTORS NPN T0-3 CASE RCS258 Vceo 60 20 Amps Vce 4 250 Watts 2.99 each TRW RF TRANSISTORS PT355IC 15 W output 12.6 VDC 175 MHz Same as 2N6081 but has no stud. 3-50 each or 0 29.00 MOTOROLA IC1 s MClSSQG 1,50 MC159QG 6.00...

Wbq

Fig', 1 The Twin Cities TU Parts List. CI 0.033mF, approx,T to resonate with LI to 2975 cycles. C2 0.066 mF, approx., to resonate with L2 to 2125 cycles C3, C4 500 V, disc ceramic. C5, C6, C7t C10 400 V, paper C8, C9 500 V, disc ceramic. C11t C12 electrolytic. C13 500 V mica. CR1f CR2 400ply silicon diode. CR3 CR4t CR5r CR6 1N64 or 1N69 diode. F1 1 Ampere, 250 V fuse. J 7r J2 Auto radio antenna jacks, Motorola type. J3 Phone jack, closed circuit, with Insulating washers. K1 255 A polar relay....

Oakland Nj

The Ramapo Mountain Amateur Radio Club will hold its annual flea market on Saturday, August 16, 1980, at the American Legion Hall, Oak Street, Oakland NJ. Indoor tables are 5.00 and taifgatlng is 3.00. There is no admission fee for buyers. Refreshments will be available on the premises. Talkin on 147.49 146,49 WR2AHD or 146,52 simpiex. For advance reservations and information, call Bud Hauser WA2JUO at 201 -797-8471 Of 201 -791 -0589.

Cb Board

K u i f H i DdrttH havt S Wait Ann K h i- Mnd ifanMijitur . mid H.l nelftl r Ii Mn.v In u-wd 'or EN i IT If a Lfjin-iT Htm. Bin-it I'B In In ID Til nlinjjline Sui- ti' N 2ih Wt H ur This receiver is tunable over a range of 1900 to 2500 mc and is intended for amateur radio use. The local oscillator is voltage controlled I.e. making the l-f range approximately 54 to 88 mc Channels 2 to 7 . PC BOARD WITH CHIP CAPACITORS 44.99 YAGI ANTENNA 4' LONG APPROX. 20TO 23 dB 59.99 YAGI ANTENNA 4' WITH TYPE...

The Vj Prod Ucts

In fact, each V-J Products 2 meter amplifier is HAND WIRED. The mode 110 with 140 watts out, or the V-80 with 80 watts both feature parasitic coils delicately hand balanced to resonance. And each unit is individually tested and burned in. The heat sink, which totally surrounds each unit, insures cool operation with the cleanest FM or SSB signal on the air. Warranty You Bet 90 days on the power transistors and 1 full year on all other components. You can buy a 2 meter amplifier anywhere, but the...

W

Model 422-2 Two Meter TVI, Harmonic Filter. A quality filter in a small package. Power capability to 175 watts FM-AM 350 watts PEP Size 3L x 1H x m S0239 Connectors Impedance 50 75 ohms Barker amp Williamson. Inc. 10 Canal Street Bristol, Pa. 19007 Fl es her Corp offers a selection of compact, economical RTTY equipment and accessories unequalled in quality or function for the price. Flesher units are designed with minimum space requirements in mind, too. Call or write today for our free 1980...

President Grant

AND COBRA 138XLR CONVERSION Clarifier Change Remove D30 1S2473 and save it for later use Lift the end of R119 100 Ohms that connects to the 9 2-V bus that originates at D28. Connect the loose end of R119 to the 9.2-V bus that originates at D44. Remove D46 1S2473 and save it for later use Spread the turns of L28 and L29 apart. The spreading distance is not critical Remove one turn from L30. Unplug the original crystals from X3, X4, and X6 and plug in the new crystals. X3 receives the...

Tuning

Antenna. 134 73 Magazine July, 1980 perimenters shy away from LF due to the misconception that antennas for this band must be gigantic to work well. I have spent several years experimenting in this bandr using all shapes and forms of antennas, but I have found the antenna described here to be an excellent performer, as well as being practical and of low construction cost. There are three basic rules to follow in designing a tow-frequency antenna. It must be vertical A horizontal antenna...

Hamkey Radio Telegraph Sending Devices

CC-IP Shielded cable fit pluq for HK-1 S3.75 Model HK 2. same as HK-1 but less base for incorporation in youf own keyer 19,95 Add 1,00 Shipping amp Handling. CC-3P shielded cable amp plug for HK-3M S2.49. Acid S ,50 Shipping amp Handling. Model AT-a anti-tip bracket only, to convert anv 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 Paddle reversible for wide or close finger spacing Combination HK-1 amp HK-3 on same...

Swot Qso Party

Participants may use as much of the contest period as they wish during the third annual SWOT QSO Party. All licensed amateurs with operati ng privileges on two meters are eligible to participate. Contacts must be made on either CW or SSB. A station may be worked once on each mode for QSO score. You can count a portable or mobile station only once on each mode even though you may have worked him while he was in two or more geographic units Contacts must be made direct without the aid of...

Famous Hamtronics Preamps

Let you hear the weak ones too Great tor OSCAR. SSB FM. ATV D er 14.000 gt n use throughout the wortd on ail types of receivers. Less lhan 2 dB noise figure, 20 dS gam Specify operatingi Ireo-jency when ordering MODEL P-30 VHF PfiEAMP. arablem m jny . JOns o cover bands 18-300 M Hz. MODEL P432 UHF PREAHP, aysilabia in versions to cover Sands 300-650 MH .

Toshiba Power Audio

5.8 WATTS RMS Typical Output 50 to 30,000 HZ 3 DB For CB's, tape decks, PA's, etc Works off of a single supply voltage Irom 10.5to 13VDC. 10 Pin plastic DIP with special buill in heat sink tab Perfect for use on 12VDC, Q99 With Data. _ J each CLOCK MODULE OPTIONS MA 1006 A and D MA1013 Switches nnri pot for a Lipii n -Induct 5 push Pultons t toggle 1 1 K Affirm Purls inckidinq high Imped amp rifin transducer Much more efficient tftan a speaker S1.B rcinsduLPF oi iv funb' ievablv loud Si 10 16K...

T

Whether you're already serious about satellite communications, or considering the new Phase III worldwide DX opportunities for the first time, KLM has what you'll need. Jt A prime example is our 420 - 450 MHz 18 element Circular Polarized antenna. Designed for optimized communications through OSCAR 9, the 420-450-18C puts the fid on flutter and multi-path fading. gt And, with it's typical KLM broadband response, the 18C also meets the critical Jt needs of DX'ers,...

New Hy Gain Amateur Catalog Includes More Than Products

Hy Gain, a division of Telex Communications. Inc 1 has published a new 24-page catalog featuring over 100 base and mobife antennas, towers, rotators. microphones, headphones, boom mike headsets, and ac cessories lor the amateur radio operator A full line of desk and hand mikes, the new HDR300 antenna rotator, and a series of seven crank-up antenna towers are the newest additions to the Hy-Gain amateur offerings. The catalog contains detailed specifications on all products, including swr curves...

Lunar Linearized Amplifiers

One reason our Linearized amp pre-amp combos are the best selling amps in the amateur market is the superior linearity our units exhibit in the SSB mode. To be Linear.' the amplifier's output signal must be an exact reproduction of the input signal, with only the power level changed Lunar is the originator of the LINEARIZED process, and all of our amps exhibit this by the very small amount of side-splatter produced Others may attempt to copy us. But why buy a copy when you can have the...

Message Memory Keyer

Advanced CMOS mes age nttimoff Records at any spe 0 -piayt bach if any speed fiampie term CO CO CO DK tJe v52YJK V H -t-.en pis ee-con -ressige on cantaa de MB2YJv OSL N f Nf 79 579 FW Pjuj X Self ompfenng dors and da amp ftes florin aot .- m1 dash memory iambic keying with any squeeze paddle Speed volume, tone tune an lt i to Current atatn CMOS barter operation - QCrtjQIe Dt'ji q j-T . fh tQf -e. nnj jrJ CutDut Ket . gr.s licyck j tfr jfli.- i'Jfe f 3 AlREQ Ai'ESTED Ft- GUARANTEED-LESSIMTmtr...

Tentec Introduces New Linear Amplifier

Amateur radio world another first in its new Model 444 Hercules kW linear amplifier it's the first sottd-state unit with instant break-in. Absolutely no tuning is required - in fact, there are no tun ing knobs The sleek front panel Ot I he amplifier has just four switches power, mode, meter, and band . Behind the444 blackout upper panel are two large meters which light up when ac power is turned on One meter measures collector current, while the other measures collector voltage or power forward...

Linear Transverters From Sota

Easily arrayed for increased gain. Low VSWR, under 1.2 1 at resonance. Low VSWR, under 1.2 1 at 432 MHz. Easily arrayed for increased gain. Call for M amp M's special prices on all antennas, We are the exclusive U S Distributor for these high quality transverters from SOTA CommunicatEons Systems Ud. 432 MHz transverter for Phase III 2285 KURTZ ST., SAN DIEGO. CA 92110 P.O. BOX 82133, SAN DIEGO, CA 92138