The RMK-5-52+ from Mini Circuits is a Frequency Multiplier with Input Frequency 50 to 100 MHz, Output Frequency 250 to 500 MHz, Input Power 17 dBm, Harmonics 2 to 63 dBc, Conversion Loss 22 to 26 dB. Tags: Surface Mount. More details for RMK-5-52+ can be seen below.