F8BOE wrote:

Other important things: Mouse cables are of no use, because even though they
have 5 wires the 6th wire lacks on the wrong pin, so if you only need one
connector, you must take a PS2/PS2 cable which you can cut in two pieces
but no mouse or keyboard cable.
There are two miniDIN plugs on some TRXs, one 6-pin (PS2 type) and one
8-pin; for the TNC you must use the 6-pin miniDIN.

This is familiar; several years ago, I wrote the following note
about using a PS/2 keyboard extension cable:

http://k6jq.home.comcast.net/ft847_pkt.html

73,
Dana K6JQ