Balun

TYPICAL TELREX MONO-BAND ANTENNAS 15M317 - Monarch, 10 DBD, 3 El., 4 KWP, 2-1 2 O.D, 17' boom 20M326 - Monarch, 10 DBD, 3 El., 8 KWP, 3-1 2 O.D, 26' boom 2M609 - Monarch, 14 DBD, 6 EL, 6 KWP, 1 O.D, 9' boom 2M814 - Monarch, 16 DBD, S HI,, .8 KWP, 1.375 O.D, 14' boom 6M516 - Monarch, 13 DBD, 5 El .8 KWP, 1.5 O.D, 16' boom and many, many more send for PL-71 Dept. C

Info

Bet he 'II not forget again that Circuit--Stik is available from Circuit Specialists, Box 3047, Scottsdak AZ 85052. up to he minute in state-of-the-art understanding of electronics. Thanks very much for your tine magazine, and yemr late better format, with editorials, ham news, etc. clear across the page, and not continued in back of magazine - much easier to read. Keep up the fine work, and all the best. Chester M. Benson W9IFB 732 So. 14th St. owe you an apology for not writing long ago and...

Oscillator Rf Mixer Rf Amplifier Power Amplifier

A single tuned circuit intended for signal conversion in the 3 to 170 MHz range. Harmonics of the OX oscillator are used for infection in the 60 to 170 MHz range. Lo Kit 3 to 20 MHz, Hi Kit 20 to 170 MHz (Specify when A small signal amplifier lo drlvB MXX-1 mixer. Single tuned input and link output. Lo Kit 3 10 20 MHz, HI Kit 20 to 170 MHz (Specify when 3. PAX-1 TRANSISTOR RF POWER AMP A single tuned output amplifier designed to follow the OX oscillator. Outputs up to 200 mw, depending on the...

Oag De Wazrs

NR 662 WAXHAW, N.C.1230Z 22 SEPT. 1967 TO NORMA FAUST, YAR I N ACOCH A, PERU FROM VICTOR FAUST, WINDOM, MINN. FATHER PASSED AWAY VERY SUDDENLY LAST NIGHT. CAN YOU COME HOME Bible translator Norma Faust was in Naranjal, an isolated Amazonian Cocama Indian village about 250 miles north of Pucallpa, and there was no connecting road. Norma and her partner, Lucy Eakin, were there teaching Indians to read their own language which had only recently been reduced to writing. Would Norma be able to...

Camp Albert Butler Radio Session

Courses Taught General Theory and Code Advanced Theory and Code Amateur Extra Theory and Code Golf privileges at New River Country Club also fishing People attended from the following states and areas North Carolina, South Carolina, Missouri, Tennessee, Utah, Florida, Oklahoma, West Virginia, Alabama, New Hampshire, Iowa, District of Columbia, Vermont, Arizona, Indiana, Ohio, New Jersey, New York, Massachusetts, Maryland, Virginia, Illinois, Michigan, Georgia, Kansas, Mississippi, Nebraska,...

Selectronics

OS-11 Scope Full 1 Meg 3 Tube For 19 Rack Mount Regular amp triggered Sweep. Price 34.95 TS-323 UR Freq Meter Controlled heterodyne-type Inst. Freq Range 20-450 MC. Price 74.95 Xcellent Cond W Bogk TS-155C Sig Generator Freq Range 2700-3400 MC Units in good condition. Sold for Parts 14.95 115V - 50-1600 eye 1 phase P S included in Gen. R509-ARC Receivers Freq Range 118-143 MC with squelch. New 14.95 T-19 ARC Xmitters 3 4 MC Freq Range. 1 MC-Xtals precision type for octal sockets. Panel Meter 0...

Health

Fig. 1 Tubing may have balls or disks on their ends or strips may overlap for slight fixed condenser effect. Connect the high voltage either to A and B or to A and C. Practically there is no difference. If there is one thing we readers of 73 have even more in common than our interest in radio I would guess it would be our health in general, though we usually do little about it, and in particular the desire not to die after great pain from cancer. There is something we are qualified to do about...

The Hartley

Hartley who, until his recent death, was one of the last of the real electronic pioneers. Ralph V. L. Hartley, inventor of the Hartley oscillator, died on Friday, May 1, 1970, at Overlook Hospital in Summit, New Jersey. He was 81 years old. Ralph Hartley graduated from the University of Utah in 909 and studied for the next three years at Oxford University as a Rhodes scholar. After returning from England, he joined the research laboratory of the Western Electric Company....

Reactance Ohms

Touched the tip of the pencil to the whip where it resonated at 3.8 MHz and arced a ring around the whip. This mark is permanent and very easy to see. I then turned the rotary inductor all the way in and retuned the transceiver for maximum output. I found out that maximum output occurred at 3.85 MHz, 50 kHz up the band. I then ran the rotary inductor back to its original spot and retuned the antenna to 3.85 MHz by lowering the top section whip. When I again found resonance, I marked this spot...

Specialists Co

Evaluation of Swan's 2 amp 6 meter Antennas When I decided to operate on the VHF bands, my first consideration was the antenna system I made plans for this important feature even before making plans for the rig that I use. One day I heard about a firm in Stockton, California, that made antennas to order that led me to Oliver Swan's place of business to discuss 6 and 2 meter antennas. Having worked in the broadcasting business for some years and having met countless lids who try to convince you...

Hygain Electronics Corporation

Box 5407-GC, Lincoln, Nebraska 68505 The most powerful antennas under the sun ____. . _ NOW A GREAT NEW WIDE BAND VERTICAL for 80 through 10 Meters Take the wide band, omni-directional performance of Hy-Gain's famous 14AVQ WB, add 80 meter capability plus extra-heavy duty construction and you have the unrivalled new 18AVT WB. In other words, you have quite an antenna. Automatic switching, five band capability is accomplished through the use of three beefed-up Hy-Q traps featuring large...

Mobile

The 75m mobile antenna I use raises a few eyebrows now and then, but it really works, and does so exceptionally well. It is the best performing 75m mobile antenna I have ever had the pleasure of owning. It is of the homebrew variety, using all commercially available components. There is nothing really new in its concept except that I have adapted the features of many different antennas to come up with one that maintains high Q and high performance over the entire phone band. It does look a...

Write For Free Catalog

Money refunded without question if equipment is returned within seven days from shipment, undamaged, freight prepaid. Unless otherwise specified, equipment is used, and is sold as-is. AM items shipped FOB Tarzana. California. Crystals, ovens, antennas not included unless specifically stated in catalog. All equipment is sold on a first'Come, first-served basis. RO. Box 138, 18669 Ventura Blvd., Tarzana, Calif. 91356 savings and you don't have to lug a charger around with you. SONAR 2301 Sonar...

Military Electronics

24 PAGES, crammed with Gov't Surplus Electronic Gear -the Giggest Bargain Buys in America tt will pay you to jSENO gsglfoi your copy Refunded with your first order. BC-223AX TRANSMITTER 25-watt, CW, MCW, Voice, Crystal control oil 4 pre-selected channels, range 2000 to 5200 Kc by use of 3 plug in units. Complete. BRAND NEW S27.50 APN-1 FM TRANSCEIVER 100-450 Mc, Freq. modulated by moving coil transducer- Easily converted for radio control or 70 cms. Complete with 14 tubes, dyn. BRAND NEW ....

Walkie Talkie

If you are seriously thinking about adding a walkie talkie hand-held transceiver to your 2 meter FM system, but confused by the many types of units and wide range of prices, I think this article will help you make your final decision. The advent of repeaters and the convenience of carrying around a small transmitter with a range of 50 100 miles makes the purchase of a walkie-talkie tempting indeed. Our company spent several months collecting information on all the VHF high band commercial...

USA

There are probabiy more of these units in use than any other. Good specifications, many accessory options, and two-frequency kits and a four-frequency kit for amateur use still make this transceiver desirable. As newer units are put into service, more used HT-200s become available. Motorola sells reconditioned units to commercial customers Spectronics, Inc., near Chicago, sells used Motorola units to amateurs. We hope our research and this short summary will...

Vhf Fm Monitor Receiver

Standard C826m

NEW IMPROVED CIRCUIT. Two dual-gate MOSFET RF stages eliminate the need for a pre-amp. Extra high quality 8 pole, quartz, 10.7 MHz integrated filter available in your choice of 15 or 30 KHz bandwidth. 4 push-button channels with trimmers for each crystal give precise frequency setting. Dual conversion with 10.7 MHz and 455 KHz I .F.s. .3 to .5 jjCW sensitivity for 20 db quieting. Integrated circuit 1st I.F., 2nd mixer and oscilillatDr, 2nd I.F., squelch, AGC,...

Transmitter

Dsb Transmitter

The DSB transmitter described herein uses crystal control and runs 1 watt or so, which can be used barefoot or to drive an rf amplifier. The unit should be assembled in a small minibox or built on perf-board or PC board and then installed in a small minibox, as stray hand capacitances can upset the carrier balance. The transmitter consists of speech amp, carrier oscillator, balanced modulator, and PA stages. The amount of carrier suppression available with a diode-type balanced modulator is -40...

Base Hookups

Suggested semiconductor hookups for tube sockets. gate. You may find it necessary to tune the source, drain, and gate resistances in order to have your vfo working well with a particular FET. I used potentiometers across the various elements to arrive at the recommended values. My vfo works reliably from 10V down to 6V and the maximum drain current is 1.5 mA. Other oscillator hook-ups may occur to you, and they will work but the tuning range and linearity of the vfo will suffer Linear...

Lex

Armstrong Regenerative Radio Tube Triode

NY 10003 Be a PIONEER in HAM TV build your own camera BRAND NEW KIT MAKES ASSEMBLY EASIER AND MORE FUN THAN EVER J THE ilivir MOW OLID'iTm CAMERA KIT AVAILABLE. VIDIC0N m line rii.lution AUTOMATIC 1 11 r r,r-i ,,1,.-llii, ViJfcO Of RF DLltpLli ch. 2-fi rr.11-, wiihoMi n-i ljfif i - la any TV sot Special ltKtay discomit ptice. Rrgvlv 129.95. Vidian jr ctd sepvately IV, fj PrICEs penpaid. Special ltKtay discomit ptice. Rrgvlv 129.95. Vidian jr ctd sepvately IV,...

Radiation Devices Co

I 5200 Panama Ave., Richmond CA USA 94804 THE ONLY OSL BUREAU to handle all of your GSLs to anywhere next door, the next state, the next county, the whole world. Just bundle them up please arrange alphabetically and send them to us with payment of 4 lt L each. The compressor unit performs very well. I hooked it up to a tape recorder to check performance and quality of the audio. I could speak loud or gently, close or several feet away from the mike and still got the same volume out, audible or...

Electronics

LOUIS, MO 63112 314 726-6116 NL-940 DIGITAL NIXIE TUBES Numerals 09 7400 SERIES GATES - any type-please specify dual inline package 50 7490 COUNTER, 7475 QUAD LATCH, 7441A NIXIE DRIVER - all three for only ____7,50 930 SERIES DTL GATES - any type-please specify dual inline package 60 7400 SERIES DUAL FLIP FLOPS any type-please specify dual inline package . . 1.25 709 OP AMP in TO-5 CASE. Ideal for pre- amps, RTTY, TU, AFSK OSC. etc 1.25 MOTOROLA MECL - MC301, MC303,...

Antenna

Radio frequency amplifier, schematic. Fig. 2. Radio frequency amplifier, schematic. until I started looking through the manual. If the drive level on the grid of the final amplifiers drops below 10 mA, the keying relays won't pull in. The relays, once keyed, will stay energized, though, even if the drive falls to around 5 mA. But if you drop power on the input, you won't get the rf amplifier going again until you can generate 10 mA of drive. It seems to require about 8W of transceiver...

Communications Corp

Fet Compressor Schematic

World s largest manufacturer of marine V.H.F. equipment Squelch sensitivity Threshold .2 microvolts or less 2 MOSFET RF Amplifiers 1 MOSFET Mixer Deviation acceptance Up to 15 kHz deviation Spurious and image attenuation 65 dB below the desired signal threshold sensitivity Adjacent channel selectivity 30 kHz, channels 60 dB attenuation of adjacent channel Type of receiver Dual conversion superheterodyne Audio output 5 watts For external speaker 339.95 complete as shown with microphone, built-in...

Motorola Meieo Power Amplifier Wit WAnS Output Brami New

This is a completely self-contained power amplifier designed specifically to increase the power output of low power transmitters. It requires no modifications to operate on rtty, fm, mew, etc. in the above listed freq. range. It will deliver 250 to 300 watts out when driven by a 2 or 5 watt handie talkiel The power output can be increased up to 700 watts with a very simple modification. Change tubes to 4CX250B s, make minor change in power supply, instructions supplied with each unit. Very...

Watts

With a 50 mW input, a signal of at least 5W is produced. As shown in the block diagram of Fig. 1, the design of this transmitter is straightforward and it is easy to build and tune. Deviations from values upwards of 10 will not affect the operation however, I do recommend that no changes be made in the type of transistors or diodes. The oscillator Fig. 2 uses a 2N3866 and a 2N3904 in an emitter-feedback configuration. The inductor in series with the crystal is...

Transistorized Lm Freq Meter

Battery Radio 1951 Schematics

A few simple modifications and you can plug FETS right into the tube sockets. The last word may never be written about the BC-22I and LM frequency meters. The LM is particularly attractive because it is in the smaller package. With transistors replacing tubes, it has features most everyone wants it is rugged, portable, and accurate, to name a few. I will describe a conversion of an LM-15 frequency meter in which field-effect transistors replace tubes the power supply becomes a standard 9V...