CA 1

[Fred Wittman]

Charles Seitz wrote:

>Back in the 50's and into the 60's hams were supposed to cease transmissions
>if a nuclear attack was imminent.  I guess that was a good idea, hi-hi. You
>would
>somehow detect when a local radio station left the air as only designated
>stations
>were permitted to transmit Conelrad (Control of Electromagnetic Radiation)
>emergency broadcasts on 640 kc or 1240 kc.
>
>If I remember correctly, the CA-1 Conelrad  Alarm connects to the AVC of
>your
>monitor receiver to detect when the monitored carrier drops
>
>A group of designated stations would transmit during randomly sequenced time
>slots to hopefully deny the incoming bombers use of radio direction finders.
>
>Does anyone know any technical details about how this was accomplished?
>
>.---  CHAS  WA2DYA
>
>
>
>radio station to
>----- Original Message -----
>From: "John King" <k5pgw at YAHOO.COM>
>To: <HEATH at LISTSERV.TEMPE.GOV>
>Sent: Friday, July 08, 2005 22:44
>Subject: [HEATH-TEMPE] CA 1
>
>
>  
>
>>What is a CA 1. My GUESS is a Conelrad Alarm. Probably
>>not correct. 73, John, K5PGW
>>
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>  
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I understood back then you HAD to monitor Conelrad whenever you were at 
your station.  Hence the CA-1 and others like it.

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