The U18.25 from GeoSync Microwave is a Block Up Converter with IF frequency 950 MHz to 1.25 GHz, RF/Output Frequency 18.1 to 18.4 GHz, LO Frequency 17.15 GHz, P1dB 13 dBm, Output Power 13 dBm. Tags: Rack Mount. More details for U18.25 can be seen below.