In the United States, the frequencies used for these systems may be grouped into four general bands or ranges: low-band VHF (49-108 MHz ), high-band VHF (169-216 MHz), low-band UHF (450-806 MHz), and high-band UHF (900-952 MHz).
In the United States, the frequencies used for these systems may be grouped into four general bands or ranges: low-band VHF (49-108 MHz ), high-band VHF (169-216 MHz), low-band UHF (450-806 MHz), and high-band UHF (900-952 MHz).