The 2083-0312-30036 from Cross Technologies is a Block Up/Down Converter with Input Upconverter Frequency 370 MHz, Input Downconverter Frequency 1.2 GHz, Output Upconverter Frequency 1.2 GHz, Output Downconverter Frequency 370 MHz, Gain 0 dB±2 dB. Tags: Rack Mount. More details for 2083-0312-30036 can be seen below.