found what I believe are a few vrc drum pickup heads too bad photos don't post here interested parties,can email
Ed Sharpe
couryhouse at aol.com
Sat May 12 21:36:01 CDT 2018
not these heads.....
Sent from AOL Mobile Mail
On Saturday, May 12, 2018 Chuck Guzis via cctalk <cctalk at classiccmp.org> wrote:
My guess was MADRE or NRL:
https://www.wikiwand.com/en/Over-the-horizon_radar
The timing would be right. Acoustic delay lines served the same
purpose, but you couldn't have a mercury delay line in an airplane,
practically speaking.
--Chuck
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