The CFM0304X620 from Cernex Inc is a Frequency Multiplier with Input Frequency 3 to 4 GHz, Output Frequency 18 to 24 GHz, Output Power 20 dBm, Harmonics 5 dBc, VSWR 2.00:1. Tags: Module with Connectors, Active, Passive. More details for CFM0304X620 can be seen below.