The 2017-0923-370 from Cross Technologies is a Block Up/Down Converter with Input Upconverter Frequency 370 MHz, Input Downconverter Frequency 950 MHz to 2.30 GHz, Output Upconverter Frequency 950 MHz to 2.30 GHz, Output Downconverter Frequency 370 MHz, Gain 0 to 20 dB. Tags: Rack Mount. More details for 2017-0923-370 can be seen below.