The CFMU501X220 from Cernex Inc is a Frequency Multiplier with Input Frequency 500 MHz to 1 GHz, Output Frequency 1 to 2 GHz, Output Power 20 dBm, VSWR 2.00:1, Frequnecy 500 MHz to 1 GHz. Tags: Module with Connectors, Active, Passive. More details for CFMU501X220 can be seen below.