12 May
2018
12 May
'18
7:36 p.m.
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