Quote:
Originally Posted by wa2ise
Maybe it's like a mouse wheel, rotate it clockwise does "channel up" and counterclockwise "channel down". With a digital connection to the usual PLL tuner. Which would also make it work with the usual remote control.
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That's what I would suspect. A lot of car stereos tune that way now, having knobs you can turn infinitely in either direction that just send pulses to the electronics of the radio so it can know how far it has been tuned up or down. They do have detents, of course, so you can feel how far to turn for a change of 1.