Hi Martin:

At 07:57 06/12/2007, Don Wilhelm wrote:
I would strongly suggest using the 8R signal instead - when inverted it is the same as the signal from the KPA100 ext amp keying interface or the Amp Keying interface for the base K2 that is offered by Tom N0SS.

See: http://www.n0ss.net/k2_t-r_rly_drvr.pdf

73,

Tom   N0SS


8R can be set to a delay in the K2 menu and is present about 15ms prior to the onset of RF, 8T cannot be manipulated by the menu parameters.

The amp keying interface grounds when active, but you could drive a small (fast) relay that will in turn provide your required voltage.

73,
Don W3FPR

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