Astatic D104 Serial Numbers
Astatic d104-m6b mike to 8 pin optima mk 3 radio. Post by WARLOCK » 09 Nov 2016, 17:09. As i am told the tx volume is a little low on my optima mk 3 radio which has. Here at Survival Radio. We are carrying on the Legacy of the Astatic D-104. We offer Refurbished Astatic D-104 T-UG8 and T-UG9 Microphones, Parts and Service. We also offer parts for the T-UP9. We also carry a variety of technical manuals. Some are available in paper form, others on CD /. Astatic: Working Condition: Not tested: Model: D-104: Serial Number: B31848: Period: Vintage: Condition - soiling and accretion; scratches and wear to base. 5.5' W x 12.0' H x 5.5' D. Item # ITMG563378. Terms & Conditions. Have a similar piece to sell? No Interest if paid in full in 6 mo on $99+ Opens in a new window or tab. No Interest if paid in full in 6 months on $99+. GOLDEN EAGLE D-104 THE ASTATIC CORPORATION Microphone Serial # 01184 Sign in to check out Check out as guest Adding to your cart.
The Astatic Story
The following is 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 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.
Astatic D104 Serial Numbers
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 'ham rig.'