The receiver shall be a UHF diversity receiver with three selectable frequencies in the 660 MHz to 865 MHz band. The receiver shall provide an on/off switch, frequency selector switch, and audio level, RF, and power indicators. The audio bandwidth shall be 35 Hz to 20 kHz, with 0.8% typical THD at 1 kHz. The typical A-weighted signal/noise ratio shall be 110 dB(A). The audio output shall be available on a balanced XLR and an unbalanced TS 1/4" jack, adjustable in level, and deliver 500 mV rms at rated deviation. The receiver shall be housed in a half-rack metal case for easy rack mounting.