The Astatic Story
The following was excerpted from the 1946 Astatic Catalogue.
AN IDEA that grew into an Industry
The D-104, Astatic's first Crystal Microphone manufactured in 1933
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 acquaintance 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 satisfactory, it had certain limitations which
it was hoped could eventually be overcome.
|C. M. Chorpening, Vice President
||F. H. Woodworth, President
NEW ELEMENT SUGGESTED
It was about this time that an old acquaintance, Mr. Charles E. Semple of
Cleveland, who had been visiting his "ham" friends frequently, invited
them to pay him a visit. With a background of phonograph and loud speaker
experience, Mr. Semple was then occupying bench space in the Brush Laboratories,
experimenting with elements made from Rochelle Salts, (Sodium Potassium Tartrate).
Through Mr. Semple, the two visitors met A. L. Williams, electrical and
mechanical engineer, and Dr. C. B Sawyer, scientist, who demonstrated the action
of these new elements in relation to microphones, phonograph pickups, speakers,
recording heads, earphones and other devices where it was desired to transform
mechanical energy into electrical energy or the reverse. Here, it seemed, they
had found the answer to a simple, low-cost, dependable "mike" for the
A group of Astatic officials and employees, in those early days.
INCORPORATED IN 1933
By 1933, CHorpening and Woodworth found it advisable to incorporate a
manufacturing and sales company and to branch out with a line of Crystal
Microphones, Crystal Phonograph Pickups and Recording heads for manufacturers
and Radio Jobbers. Mr. Semple was brought into the new organization as designer
and later served as general manager until his death in 1939.
There is certainly a lot of missing
information from 1933 to 2011,
Can anyone help with this ? email me at firstname.lastname@example.org