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...

Novice Regenerative Receiver

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...

Stmas With

The perfect Christmas present for a ham is the gift he'd pick for himself a subscription to his favorite ham magazine, 73, This is the gift that will bring pleasure all year and even longer. You'll like the special price, too, of only 4 for 14 months for the first subscription and 3.50 for additional 14-month subscriptions, The newsstand price for 14 copies of 73 is 8.40, so you can save up to 4,90. hat also means that the copies of 73 cost only 25 apiece instead of 60 . Don't forget Well send...

Info

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...

The Davco

Get the receiver that does the job Feature for feature the DR-30 is your best buy. AH so lid-state featuring Field-Effect transistors in RF stages Most compact receiver on the market today but big enough to do the job Makes overloading and cross-modulation a thing of the past Unbelievable sensitivity really pulls in the weak ones Contains all of the features you want at a price that's right All of the advanced capabilities ever wanted in a receiver are now available at a price within the range...

Eico Transceiver

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...

Output

A piece of wire either 30, 90 or 125 feet long makes an excellent antenna. Though it s not shown on the diagram, a good ground connected to the case is recommended for best results. Turn on the receiver by twisting the regene rat ion control clockwise, past the switch click, until yon hear a slight whistle. Tune around and you II hear some stations. It's best to do this at night so that you 11 be sure to hear plenty of I hem. Code stations are best received with 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...