The MR147M from Spectrum Control is a RF Mixer with RF Frequency 3000 to 18000 MHz, LO Frequency 3000 to 18000 MHz, IF Frequency 0 to 500 MHz, Conversion Loss 5.5 dB, LO Drive - Power 13 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for MR147M can be seen below.