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Parts Kit Available annel Pre-am

Donald Wiggins W9CWG 807 Lincoln way VaIpqraiso, Indiana

The pre-amp described here evolved as a result of having several transmitters on different frequencies, each with 11s own microphone or needing the microphone already tied to another transmitter. It was reasoned that with one p re-amp stage feeding several cathode-follower stages one microphone could be used on the operating table with each cathode-follower connected to a different transmitter. The low impedance of the cathode-follower would match the input oi the two meter FM transmitterĀ» this being one of the obsolete commercial two-way units, made obsolete by the FCC's so-called "split channel regulations/' Most manufacturers of mobile two-way radios designed around the carbon

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