The Shure UA834 is a low-noise in-line VHF and UHF antenna amplifier. It is intended for remote-mounting antennas to a Shure receiver or Model UA845UWB or UA844+ distribution amplifier in a large installation.The unit receives power through its output port from the Shure receiver UABIAST or distribution amplifier. When an antenna is remote mounted the UA834 amplifies the received radio signals to compensate for insertion loss in the coaxial cable. A gain selector switch adjusts for longer lengths of coaxial cable.