The FK-5 from Mini Circuits is a Frequency Multiplier with Input Frequency 10 MHz to 1 GHz, Output Frequency 20 MHz to 2 GHz, Input Power 10 to 20 dBm, Harmonics 15 to 20 dBc, Conversion Loss 13 to 17 dB. Tags: Module with Connectors. More details for FK-5 can be seen below.