[Elecraft] KPA500 cables needed

[Phil & Debbie Salas]

"The FT-897 has an "extra" TX GND signal on the tip of the ACC jack.
A cable with stereo 3.5mm plug to RCA plug can be used to connect
the ACC jack to the KPA PA Key jack ... an off the shelf 3.5mm stereo
to 2 x RCA cable can be used for ALC and PA Key if desired."

That ACC jack tip is for an INPUT to the FT-857/897.  I.e., grounding this 
input puts the radio into a CW transmit mode for tuning an external tuner. 
The ring is ALC.  You must use the miniDIN8 connector for amp keying.

Phil - AD5X