Comtech CS4400 Frequency Converter SystemCondition:* Used Demonstration Unit; Unable To Test. As Pictured.Additional Notes:* Two independent transmit channels and two dual receive channels* Fully automated tuning (fixed frequency systems available)* Modular construction* Easy-to-read display* Front panel keypad for easy menu driven frequency and function control* Microprocessor monitoring of critical system functions* All functions controllable from the front panel, via SNMP or serial M&C port* 4.4 GHz to 5.0 GHz frequency range tunable in 100kHz steps* Independent gain control of transmit and receive channels* Built in self-test and monitoring* Redundant power distribution* Redundant self contained 10 MHz Rubidium timing and frequency reference* Redundant microprocessor control systemsUpconverter Specifications:* RF Out: 4.4 GHz to 5.0 GHz* Channel spacing: 100 kHz* RF power out: +33 dBm max.* IF frequency in: 70 MHz* IF input impedance: 50 ohms* Gain IF input to TX output: 23 dB to 33 dB* Bandwidth, 1 dB: fo 16 MHz* Group Delay, fo 13 MHz: Less than 4.5 ns, peak-to-peakDownconverter Specifications:* RF In: 4.4 GHz to 5.0 GHz* Channel spacing: 100 kHz* IF power out: +10 dBm max.* IF frequency: 70 MHz* IF output impedance: 50 ohms* Gain RF input to IF output: 0 dB to 10 dB* Bandwidth, 1 dB: fo 16 MHz* Group Delay, fo 13: MHz Less than 4.5 ns, peak-to-peak* Supply Voltage: 42-56 Volt DC* Supply Current: 5.5 Amps* Dimensions (HxWxD): 5.25″ (3RU), 19″ x 17″* Operating Temperature: -4F to +131F (-20C to +55C)ComtechCS4400