[Elecraft] Interfacing K3 to TenTec QSK Amplifiers/Automatic Antenna Tuner

[Ben Horton]

After completing my new K3 I am now anxious to interface it to my TenTec 
Titan model 425,  Hercules II model 420, and Automatic Antenna Coupler 
model 253. Of course with the two amplifiers I have built a black box 
switching unit that will only allow one amplifier to be in the RF/keying 
chain at any given time.  Has anyone interfaced the TenTec amplifiers or 
the TenTec Antenna coupler to the K3 utilizing the unique 
"key-in/key-out" technique particular to TenTec QSK operation?

Please note that QSK operation is my main concern in interfacing these 
units together.

Ben,  K5EX