"Scott Dorsey" wrote in message
...
George McLeod wrote:
Would anyone have a circuit, or know where to find one, for the Conelrad
device as marketed by Motorola and Heathkit.

What is this device? Does it automatically tune the radio to a CONELRAD
frequency?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
to monitor AGC voltage on the monitor receiver. When

The Heathkit was a model CA-1. It used a 2D21 thyratron
the station went off the air, the thryatron fired and locked
a relay which had contacts for the whatever notification
device was being used. AGC sensitivity could be set from
a volt or so to about -20 volts. Looked a bit like the
QF-1 box.

pete