GSM Channel Mapping Notes
Some NICs/devices use downconverters to map normal 2/5ghz channels to 900mhz GSM/ISM bands.
The below list is mostly so the mappings for (unsupported) devices aren't forgotten.
Ubiquiti Rocket M900
For HT5 mode: 907(2427) 912(2432) 917(2437) 922(2442) For HT10 mode: 907(2427) 912(2432) 917(2437) 922(2442) For HT20 mode: 912(2432) 917(2437)