The FM5X250M500M from Lotus Communication Systems is a Frequency Multiplier with Input Frequency 50 to 100 MHz, Output Frequency 250 to 500 MHz, Input Power 17 dBm, Harmonics 2 to 57 dBc, Conversion Loss 22 dBm. Tags: Module with Connectors. More details for FM5X250M500M can be seen below.