[Elecraft] 2m internal transverter PTT out

[Rajiv Dewan]

Dear Elecrafters,

   I have a K3 with an internal 2m transverter that I use with an external amp.  Initially I had the amp connected to PTT-out but that would key the 2m amp if I transmitted on any band.  To help with this, I put the optional jumper on P8 in the transverter so that it put out 5v on ant3 (2m out) while transmitting.  I then built a simple NPN grounded emitter circuit to key the 2m amp by grounding its PTT-in when 5v show up on output of the transverter.  Here is the shocker:  5v show up on 2m transverter out whenever I transmit on ANY band.  How disappointing.  Am I missing something?  Is there a simple fix?

Raj, N2RD