The FMR-3-1 from RF Bay is a Frequency Multiplier with Input Frequency 250 to 350 MHz, Output Frequency 750 MHz to 1.05 GHz, Input Power -3 dBm, Harmonics 35 to 55 dBc, Conversion Loss 7 dB. Tags: Module with Connectors, Active. More details for FMR-3-1 can be seen below.