It would be cool if you can push the knob and turn to dial in the channel. Maybe in tuner mode the first push goes to tuner dial.

Hey, I like that, for that traditional feel of 'wireless knobs'! One could almost visualize capacitor plates meshing. I would not insist on drawing the scale and needle on the display, though.
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Dragi "Bonzi" Raos Q#5196 MkII #080000376, 18GB green MkIIa #040103247, 60GB blue