[Trlog] Keying Interface

Tree tree at kkn.net
Sun Mar 4 12:31:31 EST 2007

On Sun, Mar 04, 2007 at 12:22:32AM -0700, R. Kline wrote:

> In one of the older versions of the documentation for TRLog there was a
> schematic for a keying circuit that worked with either positive or negative
> keying.  Unfortunately, that circuit doesn't appear in more recent
> documentation. I would be very grateful for any assistance in obtaining a
> copy of that circuit diagram.

I actually don't remember that - but my suggestion is getting a reed relay from
radio shack.


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