These are reported to be the bands where these phones operate -- no wonder they're illegal in the US, and probably elsewhere as well.
130 - 136 MHz: Commercial Air Traffic Control.
138 - 174 MHz: Primary Land Mobile/2 Meter Ham Band/Civil/Marine, etc.
225 - 400 MHz: US Military, NATO/Air Traffic Control, Comm/Data Links, SATCOM, Telemetry, etc.
Tony P. also noted:
From what I've read about these units they operate in the amateur radio
> band so I take sort of strong offense to that.