[Elecraft] KX3 Mic input problem

[Hugh Bradley]

The KX3 mic input uses a multi barrel jack plug which enables up & down
channel changing using buttons on the hand mic. I an regular stereo jack is
placed into the socket, the radios VFO start to change continuously. To use
digital modes, I need to use the mic input to connect to my sound card.
There appears to be a setting on the Configuration menu to turn off the
up/down and PTT but this is non functional. When selected on the menu by
VFOB the options on VFO A say n/a.
So the question is - how do I provide an input to the Mic socket on the KX3
without having this problem?
Does anyone know of a solution to this issue.

73   Hugh    EI9KF