My ham family all had 22Ss at one time - four of them. I put some of those modes in myself. I vaguely recall adding thumbwheel hex switches that could be used to dial up all of the possible diode combinations for the different frequencies. It was awkward, but you could work all of the 2 meter repeaters in at least part of the band (not sure if it worked below 146 or below 145). You had to have a list so you could convert the hex number to the frequency. I also think there was a +5 kHz switch involved somewhere.
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