Radio Amateur 12-1966

Eico Transceiver

Eico Transmitter

FULL 3-BAND COVERAGE, 80-40-20, SSB, CW AND AM What Ham wants to be limited to one mode of transmission when he can have all three Or limited to PTT when he can have both PTT and VOX Or limited to spot frequency operation when he can have 10-Kc, offset tuning each way from the transmitter frequency These features, plus many more, make the Eico 753 a very satisfactory package for the Ham who wants the best, and at roll-your-own prices. Although the modern sideband transceiver is a very...

Novice Regenerative Receiver

Novice Receiver Circuit

Pins are connected to vector 13.4 terminals inserted from opposite side qp amp 0ard Bob Corbett W1JJL 46 Prospect Street Torrington, Conn. An inexpensive transmitter and receiver for the 80 meter Novice band One of the first tilings a prospective Novice notices about ham equipment is its cost, Even inexpensive shortwave receivers cost over 50 and they're not very useful for hamming. Most special zed 'lam receivers cost far more. 1 his may not seem like much to the established ham, but it s a...

National Nc-77x Reviews

1, This desk-top station for the advanced amateur includes the National NCX-5 all-band transceiver, with digital counter readout accurate to 1 kHz on each band and Transceive Vernier control to provide up to 5 kHz separation of receive and transmit frequencies, Transmit-receive selectivity is provided by National's 8-polc crvstal filter with superior 6-60 dB shape factor of 1.7 to 1. The NCX-5 provides operation on upper or lower sideband, compatible AM, or break-in CW. Now, onlv 549, 2, The...

Comdel Speech Processor Model

Comdel Speech Processor

A prototype of the CSP 11 has proved itself an effective communication aid on the amateur bands over several years. Its prominent feature is the instantaneous limiting action without the harmonic distortion which often makes the use of conventional speech clippers marginal, particularly with SSB transmitters. Designed for relatively insensitive high Z microphones -a gain control is provided the unit will enhance the intelligibility of voice signals considerably under difficult conditions, MIL...

The Sideband Escalator

Have you tried SSB speech c ipping lately i'he first known successful amateur application of speech clipping in single sideband service was made by Squires and Clegg who incorporated it in the Clegg SS Booster as an aid to their Venus six meter transceiver with interesting results,1 The effect of adding the booster unit was found to be comparable to adding a linear amplifier to the SSB exciter by raising the average power output of the signal relative to its peak power. Although audio clipping...

The Mark II Calibrator

Use readily-available integrated circuits in this useful marker generator. It puts out strong signals every 25, 50 and Fig, 1. Block diagram of crystal calibrator with integrated circuit frequency dividers. W6GXN calls it the Mark II the Mark I was described in the August 73. In the August 'fifi issue of 73, a crystal calibrator was presented which utilized a flip-flop to provide 50 kHz interval frequency marks.1 The reasons for using digital circuits for the frequency division were developed...

QRZed the YL

Or, Don't Ever Let Your Wife Become a Ham Lotsa times, in the course o a QSO, X mention to the op Ira working that my wife is also a ham. Her name, I tell him, is Charlotte and her call is WA6JNO, ex- VA2AVB. The reaction is invariably the same. The other station will say something like, Boy are you lucky. Sharing the hobby with the XYL. That sure must be great. Bet she never gives you a hard time about getting a new piece o( gear or putting up an antenna farm ' Or words to that effect. Well,...

Argentina Australia Canal Zone England Hawaii India Japan Mexico Philippines Puerto Rico South Africa Ussr East Coast

Very difficult circuit this period Next higher frequency may be useful this period Richard Factor WA2IKL 115 Central Park West New York, New York Need about an amp at 24 volts in your car Like to run your 12 yoit radio in your Volkswagen This is tor you. In mobile operation, it is frequently desirable to increase the battery voltage to some higher value. Although this article will specifically describe a unit for converting 12 V to 24 V, the circuit can be used for other voltages up to about...

Mobile Stations

Z.J. .-., J HOTTEST RECEIVER OF ANY v TRANSCEIVER > LESS THAN ONE-HALF CUBIC . FOOT IN SIZE , AREA CODE 806-P0rter 2-8759- 1320 19TH ST. LUBBOCK, TEXAS 79401 Sam Kelly W6JTT 12811 Owen Street Garden Drive, CaL Whether you use new or surplus storage batteries, this article will provide you with much useful data. Storage batteries have been with us a long time. The Babylonians used them, but Allesan-dro Volta rediscovered the galvanic battery in 1800, and Gaston Plante came...