Whdbfkioxk Wlzj

Who can say where it began or how it got started One just knows that suddenly there was this desire to communicate by amateur radio I suppose watching my father building that Hark-ness two tube reflex and later as he assembled the parts to our first Atwater Kent on the breadboard ' the bug ' as it was once called, bit me I had my turn at winding crystal sets for the bays down the street (Early Certainly, I shall never forget the day ) completed the junk Box Short Wave Receiver ' as per the...

New New New

HR2A, HR2G, HR212. MT-15, MT-25, MT T20. HR220, BT sefiei and AQUAPHONE TRANSCEIVER owners . . . fiK f PRIORI FY CHAM NEJ. SEARCHflACK MOOULE SEARCHES HACK TO T H PRIORITY CHANNEL ftfll Y 3 SECONDS DON T MISS A CALL ON YOUR FAVORITf Lir-TANNEL LED IN Ol GATES PRIORITY CHAN NE I. I.Or.KON H K l1 FILTERKIT . A 10.7MHz, iSkHz 0W 6 POLE MONOLITHIC CRYSTAL FILTER 0db ATTENUATION ELIMINATES A DJ A CENT CHANNEL INTERFERENCE. SIMPLE INSTALLATION. REALLY IMPROVES YOUR RIG. FITS ALL...

Free Catalog

Walter Pinner WB4MYL 7J04 Loren o Lane Louisville K> 40228 The simple alarm circuit described here may be built for about 5.00, and unlike most systems which merely turn on a light or sound a horn, may be set to intermittently energize a horn, lights or other signaling device, on c nd off at any speed you desire. This intermittent alarm will be easily recognized by you and not mistaken for just another stuck horn. Once activated, the system cannot be shut off without disconnecting the primary...

Mini Products

HQ-1 Hybrid Quad, 4 band 6, 10, 15 and 20 meters, element length 11 ft., boom AV- ft., Tuning Radius 6'2, Wt< 15 ibs.+ Power Rating 1 200 W PEP, Ideal for small area94,& 0 C-4 Coaxial Vertical Antenna 6, 10, 15 and 20 meters. Height lift ft,, Wl 8 lbs., 1200 W PEP 42.50 B-24 1 wo Element Beam Antenna 6, 10, 15 and 20 meters. 1200 W PEP F B 6-8dB, Lengih 11 ft., Boom 5 ft,, Turning Radius 61 ft., Wir 13 IbS. . _ . i. . . , . _ _ i. m. . m * . , 'm a. w m J m * < 1 * a 69-95 RK-3 Mdds...

Mikrad

9080 91 L02 1K low power RAM 3.90 2102 1k RAM 2.90 ASCII Keyboard Kit 79 50 FEATURES Full 55 key, reliable scanning logic, IM key rollover, TTL compatible parallel output. Also available-serial output, parity bitp TTY current loop output. Audio cjssene interlace 69 50 CRT TV tlisploy Write for inf rmai on n out INTELLIGENT TERMINAL arid oTfier computer products A MIKRA-D Inc., P.O. Box 403, Holliston MA 01746

To Sia Bc

Schematic diagram - 2 - Ktofi f& i sfors C F CIS, C 9, C25, C26 20 1 fee C 2 5 lw m a Elmenco DM 19 CI 3 - silver mica (2 - 680 pF in parallel) DM 19 CI 4, C2I - 35 V Spr ague type 196Dy 474X0035HA CI 7, CIS - 35 V Sprague type i960, J05X0035HAI ICI, IC2f IC3t ICS, C6, IC7 - SN7490 decade counter IC4-NES62 phase lock loop IC8 - SN7400 NAND gate IC9 - SN7413 NAND Schmitt trigger Ql - 2N5172 XI - 10 MH ,005 crystal (series resonant) from Jan Crystals, 2400 Crystal DrFt Myers FL 33901...

Infotech Series Terminals

Model 66 ASCII keyboard only unit, 33 type key formal, paiallei ASCII output, with built-in power supply, FOB plant . & 125+00 Model G6A ASCII keyboard with built-in video unit, S l.ne, 256 character display with scrolling, built-in power supply (Illustrated above, price does not include Video Monitor) FOB plant 329.00 Model 66B ASCII keyboard w.butit-in video unit, 16 line 512 character display w'scfoll-iny, built-in powei sup., FOB plant . 349,00 Accessories Available for the 66A & 66B...

Microphones

Shure 444 SSB Desk Microphone, with off on vox switch. Perfect audio m tch to any amateur transceiver . . . 32.50 Drake 7075 Desk Top Microphone ior use with all Drake equipment 39.00 Drake 7072 Hand-Held Microphone 19 00 Shure 444T SSB Desk Macrophone with off on VOX switch. Has builr-m transistorized P.O. Box 100, Highway 441 - Dept. 73, Otto NC 28763

Fairchild Big Led Readouts

A big 50 inch easy to read character Now available in either common anode or common cathode Take your pick Super low current drain only 5 MA per segment FND - 503 Common Caihode S2ea> No Reiects at Reres is here You Warn Quamy' You have H with ihis popular 0 3 LEO by Hewieti Packard Fits Standard i C Socket Right hand OP 5062-7 40 Common Cathode Si 25 Another S.D. SPECIAL 2 - 741V in one MINI D P Package These umis were boughf from Xerox Corporation on another of oui super buys. They are...

With

THE VENUS SS2 tN KIT FORM FOR ONLY 269 ACCUSYNC OSCILLOSCOPE DISPLAY OF SSTV SIGNAL FAST SCAN SLO SCAN CAMERA - USE CAMERA WITH YOUR HOME TV SET CL FAST SLO SCAN CAMERA 469 PI POLAROID CAMERA ADAPTER 34.50 VENUS SSTV AVAILABLE FACTORY DERECT OR FROM ONE OF THE FOLLOWING AUTHORIZED DISTRIBUTORS Asiteur Electronics Supply Arger, Electronic Barry ilecironies CFP Enterprises Milwaukee. Wise- Spring t Fl , Kev York, N* Y. Irnsing, N, Y. Orlando, Fla, A-G Co., Int. A and W ElictrDnies Electronic...

Info

THE SUNTRONIX MODEL KBD IV Keyboard is ideally suited as a general purpose ASCfl Keyboard for data terminal applications. This keyboard more than meets the needs of the data entry market for long life and reliability. The KBD IV utilizes the 2 key rollover solid state read-only MOS memory allowing encoded outputs to be strobed out as each key is depressed. A second key may be depressed concurrent with the first, but the second key encoded output will not be strobed out until the first key is...

Swt

The third stop on my microprocessor tour was Southwest T e c h n i c a I Products in San Antonio. Actually this was just a very lucky coincidence, for went there to see them in regard to their television typewriter unit which is a natural to go with computer systems as well as amateur teletype. Dan Meyer, the president, and Gary Kay, the chief engineer, spent the day showing me their new Pan Meyer, President of Southwest Technical Products Company. 6800 based microcomputer system which is due...

Viatron Computer

Now You Can Buy A Surplus Microprocessor This is more than a smart terminal, it is a COMPLETE COMPUTER with keyboard input, two cassette tape drives built-in, a video display, an operating system on ROM so you're ready to go with it whun you plug it in, set to work with a field of 80 characters per record, editing, verification, tape to tape copy, tape search, etc. The system is designed to output to a typing unit for a selectric we have a few of these available , RS-232C output...

Specifications

Resistance Range 10O-1 DO megff 0 Ranges 10-1001L 10D-1000U, 1K-10KU. 10QK-1 megil, 1 megil-tb megii Capacitance Range lOpFd-imFd- 5 Ranges 10 100 pFd, 100-1000pFd, .Q01-.01 mFd. .OlmFd-.lmFd, ,1- 1 mFd.J Null Detector 2 hi-intensity LEDs-hi lo markings. Accuracy 5 of null dial range switch setting Wght, 2 lbs, Power Needed 117V. AC 6QH7 3W L. W. Sanders VE6BV 2404 37 St. S.W. Calgary As earlier versions of a character recognition device were called Sclcal it would only follow that newer...

General Electric Progress Line Mobiles

Range Powbt output Power Supply 30 to 50 MHz 30 to 50 MHz 30 to 50 MH 30 to 50 MHz 30 to 50 MHi 30 to 50 MHi 152 KO 172 MHi 30 Walls 60 Watt 100 W t ts 30 Watts 60 Watts 100 Watts 30 Walts 6 1 2 v Vibrator 6 1 v. Vibrator 6 12 w. dv amotor 12 v. irfrrtSfStOf 12 v. transistor 12 v. transistor 6 12 v. Vibratoi ANY OF THE ABOVE FOfl ONLY S35.00 ea. Some are one of a kind, specify a second choice. FE72JA3 42 to 50 MHz 100 Watts RE72JB3 42 to 50 MHz 100 Watts RE53JCG 152 to 172 MHz 30 Watts FE...

Kits

Over ISO easy-to- buid, high -quality electronic kits for the hobbyist, experimenter, technician and engines 164 kits offering better value, greater choice than any other kits available today, For free catalog, write Amtroncraft Kits Ltd. 1 West 13th St., New York, N,Y 10011 212 255-2362 Anyone who holds an amateur license of Technician r higher or a first tJi second class radiotelephone license, should be capable of performing repairs and maintenance to his own, or almost any, equipment. The...

Lj

1 -meter FM 100 Channels 12 watts was S3D9.95 GTX-1 or GTX-1T HAND-HELD 2-Meter FM Transceiver 2-ntBter FW. i c-anneis 30 walls was S299 35 Accepts standard plug-in i crystals Features 10.7 MHz crystal filter i Trimmer caps on TX and RX crystals Battery holder accepts AA regular, alkaline or nicad cells Mini Handheld measures 8 high x 2.625 wide Rubber ducky antenna, Wrist safety-carrying-strap included 6-me er FM. 100 Channels, 35 watts was S30 .95 a-ne S GTX-I. plus JC 0I7 Installed JariB...

Motorola Metrum Ii

Motorola Metrum

Transmitter Power 1W 25W Receiver Sensitivity .2uV Power Requirement .3 A receive, 7.5 A transmit 25W Size 2 xl lx9V lt inches and multiple repeater offset kits avai ab e Mai orders shipped UPS same day on receipt of cashier's check or money order. Mail orders add S J 0 for handling and shipping. Ask for our very competitive prices on

Radio Amateurs Cartoons

Serving the radio am,its-j' mtcp 336 185 W MjinSt- Amsterdam. NY 02070 Tel. I5T8 842-8350 Joe Rice W4RHZ 916 Western Ave Covington KY 41011 After investigating the available store-bought mobile antennas and looking at their prices, I came away more lhan chagrined. Not only were the prices high, but equally important the swr was poor, indicating a sort of compromise in design. t decided to build my own. Having already done reasonable experimenting on other bands, I decided I would like to try...

Coming Next Month In Kit Form

' Hexadecimal Keyboard - Load programs direct from keyboards' 16 keys and verifying display. Does not use Computer I O. I O for use with Computer Aid or other digital recorders. Variable baud rate selectable on externally located unit by one knob. Can ioad computer or accept dumps without software. Turnkey Operation. For any 8 bit computer. Record Playback Amplifier, Expanded version of our Computer Aid board for use with your own desk cassette or reel to reel . Go to 9600 baud on reel to reel....