The Audio-Technica ATW-B80WB are UHF (470 - 990MHz) in-line antenna boosters (pair) that increase RF signal strength (6dB/12dB gain switch) to compensate for antenna cable loss. For use with Audio-Technica UHF receiver models ATW-R3100b, ATW-R3210, ATW-R6200 S and with the ATW-DA49 and AEW-DA series antenna distribution systems and other devices providing 12V DC antenna power.