Replacing the Azden 30XT, the Azden 35XT UHF wireless transmitter is a compact plug-in transmitter which converts dynamic low-impedance microphones to wireless, using a special 'lock-down' XLR connector for a secure grip. The 35XT is designed to work with either the 310UDR, 305UPR or 325UPR Azden 188-channel UHF receivers. This camera-mount wireless microphone system uses UHF frequencies 566.125-589.875MHz to avoid interference from HDTV broadcast transmission. The 35XT transmitter features 188 frequencies to digitally choose from, so you'll always find a clear channel. The 35XT also features a large LCD readout. Using two AA Alkaline batteries, the 35XT operates for 6-8 hours.