The coverage extension solution is to use passive distributed equipment and RF amplifiers to provide and expand the RF coverage inside high-rise buildings, tunnels, basements, airports, underground car parks and other areas. The solution is applicable for radio systems as DMR, TETRA, Conventional and Trunking system with VHF or UHF. To ensure the range of communication for radios, in order to overcome weak signal or loss of signal in some environments inside buildings, basements, and improve the quality of conversations.
Hytera uses Bi-Directional Amplifier (BDA), a RF signal booster, to improve radio communications in situations where radio signal levels are degraded due to obstacles in the radio path. This might be in where their construction can prevent the signals from a source reaching the users in these areas. They are available in a number of variants to suit the communications situation, this includes integrated and distributed configurations and band and channel select options.