[Elecraft] KX3 - ERR KEY when using hand key

[Mike Parkes]

Hi everyone. Trying to get set up here with a hand key for the first time
with the KX3.
I acquired a key that came with a 1/4" plug, so I thought I could buy an
adapter that would take this down to a 1/8" plug and avoid having to solder
anything. The 1/8" plug is stereo, and the meter shows that TIP is being
keyed and the base and ring are common. Turning the rig on with the key
plugged in throws a KEY ERR message. I am guessing the ring can't be common
to the base of the plug for a hand key? Thanks, 73's Mike AB7RU