RED

Bi-Pofar LED's Lights Red One Polarity Green Rev. 1.25_ 25 AMP FULL WAVE BRIDGE 100 PIV x 1.95 ea. in414b 25 51.00 CT 7001 clock-cal-alm ,, S7.95 MM5316 alarm clock 4.95 MM6369 xtal TB IC 2,95 MM5375AB 6 digit alarm clock S3.95 Motorola 2N2501 High Speed Switch Silicon NPN 350 MHz hFE 50 Stud Mount Case 2 for 1.00 8QV. 3A._ 11 Digit .25 char, gas discharge Mini Slide Switch SPDT 6 S1.00 Reg Slide Switch DPDT 8, Si .00 Push button Switch N O. 7 S2.00 3 8x3 8x1 4 high 2 for 1,00 RCA CD4Q46 AE...

Kra Single Lever Paddle

For keying conventional TO or discrete character keyers, as used in the KR20-A. A completely automatic electronic keyer fully adjustable to your optrsting style and pfef ere rice 5fjE edr touch and iftetjjffflrig, the ratio ot the length of chts ant dahs to Ihe spac between them. Self- in-tJollod keyer to transmit your thoL.yhtS ck'ai yr articu-latefy and almost t fioril sslV- The iambic l& oueezel feaiure allows the insertion of clits and dah with perfect timing An automatic weighting...

Tq

Input terminal to go above the maximum allowable input voltage for the IC Therefore, the zener diode (ZI) has been put into the circuit to help shunt any higher spikes to ground, You can use whatever ener you have in your junk box in the 24 to 30 voit ra nge. The rectifiers are absent in this version, but note that the lifter capacitor is still there, Keep it there - your car's alternator puts out an awful dc waveform. Filtering is still needed. All of the other parts are the same as the other...

Mrv

Irt yikjdywe tow th hit smi ft looctap yEHj iho-jkl wH rtfor me** ' turf *rt thin* If- tiuyw (an i ognri* mpr iiiilSO H RE IT IS11 Dautrii th< Liuhiui m your r-t t* h niTiriii (y ft St U6 Mir '.idr. fi iiuii+ ft mii ih- e Dautrii th< Liuhiui m your r-t t* h niTiriii (y ft St U6 Mir '.idr. fi iiuii+ ft mii ih- e + 2 loqvv pott t tmrtiktrh-i _ OA SCR un nal iwwd * ipecdl ecri + All t LiT(V tin . MPLETE - , CTi0 S

Info

Fig. x Use this graph for determining CI capacitance and Tl voltages. The points labeled are the dissipation limits explained in the text, efficiency, 20 Watts is the absolute maximum dissipation regardless of how much heat you remove I rom I he case. For these reasons 1 have included points, labeled D (for dissipation limit), on the graphs in Fig, 3. If you want to draw high currents from the ICP use a transformer voltage to the left of (above) This breadboarded supply was assembled with an...

Kra

Model 310-001 Standard Key, nickel pfatcd hardware, no switch S6.65. Model 310-003 Standard Key, nickel piaTed hardware, with switch - S3.25. Model 320*001 Standard Heavy Duty Key with nickel plated hardware, no switch 8.20. Mode 320-003 Same as -001 except with switch 39.35. Model 404-002 SSK-1 Chrome Plated - S29.95 Black Wrinkle Finish - 23.95. Fully VSWR fif reverse voliage protected No tuning required across band Switchable Class C or AB operation Built in TR switching, w increased delay...

Low Cost Graphics Terminal

Southwest Technical GT-61 Graphics Terminal kit Es a low cost graphics unit designed for hobbyists license place fee to obtain amateur radio catlsign plates Then recently a rr evaluation was undertaken by the tate that would have meant a reclassi hcation of amateur callsiyn plates in the sLatus cl what is termed vanity plates.' i.e., personalized license plates ot one form or another This would have meant a significant in crease in both the cost of initially obtaining such piates and in the...

Double Bazooka Dipole

Has a diameter ot about 50 feet and goes up about 70 feet, It has a celling of about 20,000 feet . , , bui I his is higher than you want to go without oxygen. They'll lift about 400 pounds. While you don't have a lot of control over which direction you are going to go . . , you go with the wind , . .you can control your speed quite a bit by picking an elevation which has the winds you want. We were able lo slow down and wait for Captain Crunch and Sherry to catch up with us by staying low and...

T

The Sterling Rock Falls (Illinois) Amateur Radio Socinty was once again called upon by the local United Cerebral Palsy officials to provide communications for their annual WALKATHQN EVENT This event took place on May 15th Tht 20 mile march by grade school and some high school students got off to a start at S 00 am and finished at 3.30 prn. The following volunteers in mobile units operated in 2 shifts and also helped to supervise the march Pag Johnson K9BEF, Olli Ikonen WB9DNA, Bill Peters...

Meter Crystals In Stock

Orders can be paid by- check, money order, Master Charge, or BankAmericard, Orders prepaid are shipped postage paid. Phone orders accepted. Crystals are guaranteed for life. Crystals are all S5.00 each (Mass, residents add 25d tax per crystal). U.S. Funds Only We are authorized distributors for Icom and Standard Communications Equipment, (2 meter) Note If you do not know type of radio, or if your radio is not listed, give fun damentat frequency, formula and...

Triokenwood Communications

KENWOOD'S S-700A finally fulfills the promise of 2-meters more channels, more versatility, tunable VFO, SSB-CW and, best of all, the type of quality that has placed the Kenwood name out front. Operates all modes SS8 mpper amp loweO FM, AM, and CW Completely solid state circuitry provides stable long lasting trouble-free operation AC and DC capability Can operate from your car boat or as a base station through its buift-rn power supply 4 MHz band coverage 144 to 148 MHz instead of the usual 2...

Hmq

Lo date keying a Kenwood TS-S1 IS to 350 Wails input . Additional bypassing may be required .n higher inputs. Whether the reader chooses RAMs ur PROMs or his Ctt memory. anything which can be sent with a kev can be put into mem lt ir r Try itT you'll Like it. 1 O.W, ishrraer WA6WL, BuJdincj a CVY PROM Memory73. May- 1976. pages 102-108. James Garreit WB4VVF, The W84VVF Accu-KeyerpH QST. August, 1973, pages 19 23. 1 Signeitcs, Digital Li near MOS Applications, 555 Timer p iges 6-7 through fr90,...

Ov

Sec o ndl y , we Yc going to examine a couple of manufacturers' diagrams and discuss the interpretation of same. l ig. 1 illustrates 1 he fundamentals of a simple timing diagram. Perhaps one of the first things worth pointing out is the desirability of using graph xiper. This will help you establish a time reference by assigning a time period for each division and certainly help in keeping events lined up vertically, which is one of the objectives. The arrow at the bottom of the diagram...

Wwvf

The two 12 volt power supplies use the same circuit Meters were added to the version on the right to monitor the mitageand current. The purchase of a new two meter FM rig a few months ago rekindled my interest in ham radio- My ham activity had fallen to an aikime low, but the FM rig helped me rediscover many of my old ham buddies who had already gone the two meter route, it also helped me discover several other things, among them the rapid advancement the state of the art had taken during my...

Now In Stock

Transmitting Variables Roller Inductors - Gaunter Dials Air Wound Cotts - Couplings - Knobs - Receiving Variables Toroids RrF, Chokes Coil Foirns and more Millen E. F. Johnson Barker amp Williamson - JW Miller - Hamrnarlund Add 1,50 to each order for shipping and handling. Prices subject to change. Commission warnhnalion point because of a protracted debility preventing travel. 7. Section 97.28 is retired and amended to read follows i 97.28 Manner 0 conducting e m ffutiom a Except an provided...

Rtty Handbook

A comprehensive book covering all areas of radio teletype, from getting started with the basic principles, what equipment to procure and how io make it work. 73 VERTICAL, BEAM AND TRIANGLE ANTENNAS Describes 73 different antennas for amateurs. Each design is the result of the author's own experiments each has actually been builx and air-tested. Includes appendices covering the construction of noise bridges and antenna line tuners, as well as methods for measuring resonant frequency, velocity...

Keyboard

Generates full T28-character ASCU set rj Send details on Jupiter 11 systems WAVE MATE 1015 West 190th Streei, Gardena, California 90248 Uses the industry standard tape saturation method NR2 to beat all FSK systems ten to one. No modems or FSK decoders required. Loads 8K of memory in 17 seconds. This recorder enables you to back up your computer by loading and dumping programs and data fast as you go thus enabling you to get by with tess memory Great for small business bookkeeping. Imagine A...

Tufts

386 Mam St., Medtord MA 02155 Phone. 617-395-8280 Pf f- E Bedford Mass Aijf unir an be shipped U PS Mas resident s atfd sales tax NEW ENGLAND'S FRIENDLIEST HAM BMNtMERIClHP S TO RE for art Ecanofflf Prtcv THAT'S R GHT mtroducine the E CON 0- LIN E for art Ecanofflf Prtcv THAT'S R GHT mtroducine the E CON 0- LIN E Model riput Ouipui T pjcol Ff qirmcr Pue 702 5.20W so.yow 10 hn 70out U1M9 MHz SU9.00 70 B 1.4W 60-BOW 1 m 70 M3-149 MM HGO.OO It you're not pumping out al the power you're paying for....

Klm

115VAC supplies built-in, is actually ready to operate right out of the shipping carton. It offers highest versatility and crystal stability. Any of 200 channels can be selected instantly in 10 kHz steps by three dials controlling the phase lock loop frequency synthesizer setup. Continuous in terpolation within the 10 kHz segments 144-148 MHz is afforded by VXO for trans. rec. and RIT for receive. There are also three FM crystal positions for frequently used channels. Check the Multi-2000A...

Alarm Clock Kit Six Digit

Thousands of hobbyists have bought and built our original clock kit and were completely satisfied. But we have received many requests lor an alarm clock kit with the same value and quality that you have come to expect from S.D. Sot here it Is 1 Mostek 50252 Alarm CIock Chip 6 Hewlett Packard .30 in. common cathode readouts. 15 NPN Driver Transistors 2 Slide Switches for alarm set and enable 1 Filter Cap 4 IN4002 Rectifiers 1 IN914 Diode 1 .01 Disc Cap 1 Speaker for alarm XFMR - 1.50 FOR DIGITAL...