4. The main uses of the HF
spectrum are:
• Military and governmental
communication systems
• Aviation air-to-ground
communications
• Amateur radio
• Over the horizon radar systems
6. Application of VHF band
87-108 MHz: Radio broadcast
108–118 MHz: Air navigation beacons VOR
and Instrument Landing System localiser.
118–137 MHz: Airband for air traffic control,
AM, 121.5 MHz is emergency frequency
144–146 MHz: Amateur radio. In some
countries 144–148 MHz.
7. Application of UHF band
300 – 420 MHz: Meteorology and
federal two-way use
420 – 450 MHz: Government
radiolocation and 70cm ham radio band
450 – 470 MHz: UHF Business Band,
GMRS, FRS, public safety
13. Application of C band
Microwave radio relay chains
Television receive-only satellite
reception systems
802.11a Wi-Fi
Cordless telephone applications