The 2017-1111-345 from Cross Technologies is a Block Up/Down Converter with Input Upconverter Frequency 345 MHz, Input Downconverter Frequency 950 MHz to 1.16 GHz, Output Upconverter Frequency 950 MHz to 1.16 GHz, Output Downconverter Frequency 345 MHz, Gain 0 to 30 dB. Tags: Rack Mount. More details for 2017-1111-345 can be seen below.