More than likely it is just too old to be fixed or possibly even used.

See:

http://www.avionix.com/navcoms.html

Karl
"BTIZ" wrote in message
news:q6vkf.10847$Wu.2437@fed1read05...
sounds like a trip to the radio shop..
if the shaft came out with the knob,..

BT

"john smith" wrote in message
...
I was in the process of entering the AWOS freq and when I pulled the
center
knob to select the .72 on my King KX125 the whole center knob and shaft
came out. Has anyone had this problem? What does it involve to fix it?

Carefully push the knob back onto the shaft.