Browse Items (3 total)

  • Tags: Piezoelectric

astad201.pdf
Advertisement for Astatic crystal microphones

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https://web.archive.org/web/20120307232223/http://www.k-bay106.com/rca_btp.jpg
This is an RCA crystal/piezoelectric microphone with an unknown polar response and unknown date of manufacture.

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https://web.archive.org/web/20120307235407/http://www.k-bay106.com/astaticwr40.jpg
This is an Astatic crystal/piezoelectric microphone with an unknown polar response and unkown date of manufacture.

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