[TenTec] Corsair II & Alpha

Jim Brown k9yc at audiosystemsgroup.com
Sat Jan 4 11:25:21 EST 2014


On 1/4/2014 12:49 AM, Rick - DJ0IP / NJ0IP wrote:
> I looked at the schematic of the 77 and it is spread out over several pages
> - so it's tough to follow all the way through in just a few minutes.  There
> is a "keying circuit" so my hunch is that even though its relay uses 26v, it
> probably has 12v keying to the external world.  It probably says somewhere
> in the manual.

The thing to look at is what the keying output of the Corsair sees. With 
luck, that should be the base of an NPN or PNP transistor.  If it is, 
i'd say it's safe to key it  directly.

73, Jim K9YC


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