[Elecraft] K3- simplified remote tuning knob

[Bill Clarke]

I have found a cheap and effective answer to the problem that requires 
no changes to the K3 and no soft in addition to the free version of HRD 
that I am using.

I took a mouse apart and removed the opto-wheel's detent spring. The 
wheel now spins freely. Although the diameter is small compared to a 
"real" tuning knob - I can control the tuning speed from HRD. Works for me.

At some point in the future, I may take another mouse apart and remove 
the optical encoder and build a new frame and enclosure for it - then 
add a "real" sized tuning knob to same. However, having the smooth 
tuning capability along with right and left clicks of the mouse is 
really convenient.

Bill W2BLC