Eric,

Send an email to FAR Circuits to see if they have the N0SS Amp Keying Circuit for the K2 available.

If you must go the perfboard route, it is not difficult if you follow the board layout shown on Tom Hammond's (SK) website http://www.mmccs.com/mmarc/n0ss/index_k2.html. Most of the connections can be made using bent over component leads if you follow Tom's board layout.

There are few other viable alternatives to sourcing the output from the 8R signal line.

73,
Don W3FPR

On 2/4/2020 8:48 PM, eric norris via Elecraft wrote:
Dear Gang:
I know one could take the PTT signal from the now-discontinued K60XV board, and 
it is provided on the K2/100 lid, but are there any other option boards that 
one can use to provide an external PTT signal?
If not, is anyone making the N0SS ptt out boards?  I'm trying to avoid the 
perfboard route.
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