The radio does not have a tuned RF section for that band, however from tests done by other people, the GD-77 may be usable on that band with limited power and reduced RF sensitivity
The main problem is that there is no calibration data for the power settings or more crucially the DMR deviation settings, for that band
So currently if you try to use the radio on that band, DMR would not work.
Using Community CPS to program for 220Mhz receive.
Re: Using Community CPS to program for 220Mhz receive.
I'll investigate what needs to be done to enable 220Mhz