The RMK-5-2251+ from Mini Circuits is a Frequency Multiplier with Input Frequency 300 to 450 MHz, Output Frequency 1.5 to 2.25 GHz, Input Power 17 dBm, Harmonics 5.3 to 64 dBc, Conversion Loss 21 to 24.5 dB. Tags: Surface Mount. More details for RMK-5-2251+ can be seen below.