The RMK-3-451+ from Mini Circuits is a Frequency Multiplier with Input Frequency 100 to 150 MHz, Output Frequency 300 to 450 MHz, Input Power 12 to 17 dBm, Harmonics 4 to 52 dBc, Conversion Loss 13.2 to 16 dB. Tags: Surface Mount. More details for RMK-3-451+ can be seen below.