The 3117-2525-1216 from Cross Technologies is a Block Up/Down Converter with Input Upconverter Frequency 1.2 to 1.6 GHz, Input Downconverter Frequency 2 to 2.5 GHz, Output Upconverter Frequency 2 to 2.5 GHz, Output Downconverter Frequency 1.2 to 1.6 GHz, Gain 0 to 20 dB. Tags: Rack Mount. More details for 3117-2525-1216 can be seen below.