Flightpath Posted May 11, 2019 Share #1 Posted May 11, 2019 Hi, I'm working on some research and need to know when the T-30 throat microphone came into service with the USAC/USAAF? thanks in advance for your help, cheers, John Link to comment Share on other sites More sharing options...
Flightpath Posted May 12, 2019 Author Share #2 Posted May 12, 2019 Here is the information I have found on my T-20B microphone………. http://www.usmilitariaforum.com/forums/index.php?/topic/326364-pre-ww2-usaac-t-20-b-throat-microphone/ Link to comment Share on other sites More sharing options...
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