Astatic Microphones

            Away back in 1930, two radio amateurs, C. M. Chorpening, W8WR (now W8MJM), and F. H. Woodworth, W8AHW, both of Youngstown Ohio, began searching for a better microphone for their phone transmitters. Up until this time they had been using various carbon type microphones. The condenser type appealed to them as an answer to their problem. Several units were designed and given trials on the air. Before long, other amateurs among their aquaintance began visiting their shacks, interested in either building or buying this new type of "mike." Chorpening and Woodworth, encouraged by this interest, decided to form a partnership and build these units for their friends. While the condenser unit proved reasonably statisfactory, it had certain limitations which it was hoped could eventually be overcome.
 

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