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History of the manufacturer  

Astatic Corp.; Conneaut (OH)

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Name: Astatic Corp.; Conneaut (OH)    (USA)  
alternative name:
Omnitronics LLC
Abbreviation: astatic
Products: Model types

The Astatic Corp; Conneaut, Ohio. Now called Omnitronics LLC, 341 Harbor Street, Conneaut, OH 44030.

First located in Youngstown, OH.

From the URL of Astatic, : The following was excerpted from the 1946 Astatic Catalogue. 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.

It was about this time that an old aquaintance, 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 "ham rig."

By 1933, C.M. Chorpening (Vice President) and F.H. Woodworth (President) 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.

Some models:
Country Year Name 1st Tube Notes
USA  76–99 Silver Eagle TUP-9-D-104-SE   Chrome finnish high-Z xtal desk-top microphone with PTT. Back side of microphone housing (... 
USA  33/01 TUP-9-D-104 (generic model)   High-Z xtal desk-top microphone. Many variants differing in details, older sets without pr... 
USA  38 Crystal Microphone D-104   Astatic Crystal Microphone D104. Output Level: -54 dB, 30-8000 Hz. D 104 RS wit... 
USA  38 D-2    
USA  38 Acorn    
USA  51 BT-1 6AK5  TV-FM Booster. 
USA  51 AT-1 6AK5  TV Booster. 
USA  56 CT-1 VHF "Scanafar" 6BQ7A  2-Stage TV booster. 
USA  55/56 CB-1A Converter-Booster 6AF4  The Astatic CB-1A is a combination UHF converter and VHF TV booster.  It permits cont... 
USA  50 BT-2 6AK5  TV-FM signal booster (not a FM converter). 
USA  53–55 CB-1 Converter-Booster 6T4  The Astatic Converter Booster CB-1 is an AC operated Combination of UHF converter and VHF ... 
USA  45–70 JT-30   Astatic JT-30; Crystal microphone capsule. Gray Hammerlin finish with chrome grill. 30 - 1... 


Further details for this manufacturer by the members (rmfiorg):

in 1938tbn_usa_astatic_address_1938.jpg
Manufacturer documentationtbn_usa_astatic_fp_series_print_ad.jpg