The RMK-3-122+ from Mini Circuits is a Frequency Multiplier with Input Frequency 300 to 400 MHz, Output Frequency 900 MHz to 1.2 GHz, Input Power 0 to 6 dBm, Harmonics 6 to 52 dBc, Conversion Loss 14.5 to 18 dB. Tags: Surface Mount. More details for RMK-3-122+ can be seen below.