Don,

If you have the new encoder (with the encoder board), you have the 6mm shaft. The old encoders have a 1/4 inch shaft.

You can tell which encoder you have by removing the VFO knob. Look to the right of the encoder shaft and you will find a small hole in the front panel metalwork. If that hole is empty, you have the new encoder. If instead you see a green pin in that hole, you have the old encoder.

73,
Don W3FPR

On 1/3/2015 2:12 PM, Don Baucom wrote:
I am going to order a VFO knob from the 73cnc site, I need to determine if I
have a 6mm or 1/4 inch dia  encoder.

I tried to measure with my cheap plastic ruler. 6mm is too close to 1/4 for
me to be sure.

I have #7621 purchased 12/16/11.



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