The 3115-21-109# from Cross Technologies is a Block Up Converter with IF frequency 950 MHz to 1.85 / 950 MHz to 2.05 GHz, RF/Output Frequency 10.9 to 11.8 GHz / 11.7 to 12.8 GHz, LO Frequency 9.95 GHz / 10.75 GHz, Output Power -20 to -10 dBm, Gain 20 dB. Tags: Rack Mount. More details for 3115-21-109# can be seen below.