The RMK-7-81+ from Mini Circuits is a Frequency Multiplier with Input Frequency 7.5 to 11.5 MHz, Output Frequency 52.5 to 80.5 MHz, Input Power 8 to 12 dBm, Harmonics -5 to 55 dBc, Conversion Loss 27 to 30 dB. Tags: Surface Mount. More details for RMK-7-81+ can be seen below.