The Soviet aircraft had both solid state and tube radios and other navigation equipment. The tubes were used both as a backup, and for EMP protection after a nuclear attack. Our solid state equipment of the day would likely have seized up. Good thinking on their part.
Mike AI4NS _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com