Alan,
Any frequency outside of the 136-174 MHz and 400-520 MHz ranges should trigger an 'out of supported range' error.
Jim
Jim,
I will double check but I think I used Chirp to program 220 on my UV5RC. I did change the other settings in the radio before trying Chirp but I don’t recall any problems. I’ll volunteer to try the new version if it required modifications.
73,
Alan – W6ARH