Specifications include, but are not limited to: The County of San Diego, Fire Authority has a requirement to purchase an estimated six (6) VHF NBFM Repeater with Duplexer systems. 1.1 The station shall automatically and simultaneously retransmit, with tone encoding if selected, only those voice band transmissions received by the station receiver and decoded by the station decoder. While activated, the automatic retransmit function shall have sufficient dynamic range to preclude function dropout for received signal level fades of up to 3 dB from SINAD sensitivity level. 2.1.2 The station shall include a method of switching between single antenna operations through the duplexer or operation on separate transmit and receive antennas. 2.1.4 The Repeater shall operate on a nominal 12 VDC power input provided from customer supplied 12 VDC power source 2.1.5 Maximum Current Consumption: 2.1.5.1 Repeat (TX & RX): 5A 2.1.5.2 Standby: 600 mA 2.1.5.3 Power Amplifier:25A 2.1.6 19 inch rack mountable 2.1.7 60W-110W RF Adjustable Output Power: External Power Amplifier is acceptable 2.1.8 The Transmitter shall meet or exceed the following standards: 2.1.8.1 Maxim Rated System Deviation: ±2.5 kHz (12.5 kHz) 2.1.8.2 Carrier Frequency Stability. (-30° to +60° C) - ±2.5 PPM 2.1.8.3 Audio Response: +1, -3 dB 2.1.8.4 Audio Distortion: < 3.0% (12.5 kHz) 2.1.8.5 CTCSS Deviation: 350 Hz (12.5 kHz) 2.1.8.6 FM Hum and Noise Ratio: < 40 dB (12.5kHz) 2.1.8.7 Conducted Spurious Emissions: -70 dBc (12.5 kHz) 2.1.8.8 Channel Spacing: 12.5 kHz