The 2117-3764 from Cross Technologies is a Block Up/Down Converter with Input Upconverter Frequency 950 MHz to 1.45 GHz, Input Downconverter Frequency 3.7 to 4.2 GHz, Output Upconverter Frequency 5.925 to 6.425 GHz, Output Downconverter Frequency 950 MHz to 1.45 GHz, Gain 20 dB(Up), 35 dB(Down). Tags: Rack Mount. More details for 2117-3764 can be seen below.