The ATW-B80D consist of a pair of UHF band-specific powered in-line antenna boosters, designed to increase the RF signal strength to compensate for antenna cable loss. When paired with the appropriate UHF antennas they are especially suited for applications where there are long RF cable runs between the antennas and receiver locations. Each RF booster set is tuned for a particular UHF frequency band. UHF (655 to 681MHz) in-line antenna boosters (pair) increase RF signal strength (10dB/3dB gain switch) to compensate for antenna cable loss. For use with Audio-Technica UHF receiver models AEW-R5200, AEW-R4100 and with the ATW-DA49 and AEW-DA series antenna distribution systems and other devices providing 12V DC antenna power.