So there are several possibilities. I
had the same problem initially, when I realized that I didn't wire
it correctly. I fixed the wiring and it worked. It could be a bad
encoder, incorrect wiring or a bad Raduino, or corrupted software.
If you have a two channel scope you can look at the two outputs
signals, they should create 2 pulse trains shifted be 90 degrees
when you turn the knob. The phase shift reverses when you change
direction. Most likely if both have pulses they are phased
correctly, but if one or both don't, it wont work. If you see the
pulses, it is not the encoder.
And
yes, rotating only causes the display to flicker the last two freq
digit from zero to fifty. After pressing the encoder and getting
the change band option, turning causes no change. Same with the
next press and then back to 40m where it won¡¯t change freq.?
