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Post by TheStonerGuy on Sept 1, 2020 15:10:57 GMT -5
I'm wondering if anyone knows when Johnson revised the 223? I'm referring to the front panel: ![]()    Over the years I've seen multiple examples of each, so they weren't a solitary example, and I'm pretty sure the circuit inside is the same, it's just one of those questions ... While you're answering that inquiry, I have another un-related question regarding Astatic microphones, or more to the point, "where they were made and when they were made" There's the older ones from Conneaut Ohio (I'm aware of the general time frame), but there are the mics with Palmyra, PA on the back, and DAS/crappy mics with Conneaut displayed, and one other city/state that I can't remember off hand... no more questions TIA |
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Post by cbrown on Sept 2, 2020 12:36:48 GMT -5
While you're answering that inquiry, I have another un-related question regarding Astatic microphones, or more to the point, "where they were made and when they were made" There's the older ones from Conneaut Ohio (I'm aware of the general time frame), but there are the mics with Palmyra, PA on the back, and DAS/crappy mics with Conneaut displayed, and one other city/state that I can't remember off hand... no more questions TIA In 1930, two amateur radio operators, Creed M. Chorpening, W8WR (later W8MJM) and F.H. Woodworth, W8AHW began experimenting with different types of microphones for their "ham" stations. Their mutual friend, Charles Semple, worked for Brush Development Company where he had been experimenting with Rochelle salt crystals. Semple demonstrated some crystal pick-ups that Brush was working with, leading Chorpening and Woodworth to found The Astatic Microphone Laboratory, Inc. in Youngstown, Ohio in 1933. Semple was brought into the company as general manager to manufacture and market the company's model D-104 Crystal Microphone as well as other crystal microphones, crystal phonograph pickups and recording heads. In early 1944, Astatic moved operations to Conneaut, Ohio and supplied microphones, pickups and crystal cartridges as well as hydrophone and sonar devices to the military during World War II. After World War II, Astatic Microphone Laboratory became The Astatic Corporation. The commercial audio product division of Astatic became CAD Professional Microphones in 1988. After a merger with Omnitronics LLC in 2000, CAD, Astatic and Omnitronics combined under the CAD Audio brand. The company offers audio products for recording, live performance, commercial and personal audio, and is located in Solon, Ohio. In 2012, the Citizens Band (CB) product division of Astatic that had been acquired from Omnitronics by Barjan LLC in 2006 was sold to DAS Companies, a communications product distributor for interstate truck stops. DAS expanded the Astatic name to non-microphone accessories including coaxial cables, meters and antennas. |
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Post by bobcat4109 on Sept 23, 2020 14:03:22 GMT -5
Nice bit of history Cbrown. Thanks!
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