The RMK-3-123+ from Mini Circuits is a Frequency Multiplier with Input Frequency 2.2 to 4 GHz, Output Frequency 6.6 to 12 GHz, Input Power 13 to 17 dBm, Harmonics 5 to 45 dBc, Conversion Loss 15.5 to 21 dB. Tags: Surface Mount. More details for RMK-3-123+ can be seen below.