The PSR-VU-9537 digital repeater from ADRF operates in the VHF: 136 to 174 MHz and UHF: 80 to 512 MHz bands. It supports up to 1 wideband and 8 non-Contiguous narrow-bands. Its Center frequencies are adjustable in 0.5 KHz step and Bandwidths are adjustable in 250 KHz step. The repeater has a gain of 85 dB, noise figure of less than 3 dB without duplexing, impedance of 50 ohms and VSWR of 1.3:1. It has NEMA 4 compliant housing enclosure and triggers an alarm on the failure of the antenna, amplifier, power supply and battery/charger.