The MM1A-1855HPSM-2 from Marki Microwave is a RF Mixer with RF Frequency 18 to 55 GHz, LO Frequency 18 to 55 GHz, IF Frequency DC to 21 GHz, Conversion Loss 9 to 15 dB, Noise Figure 9 dB. Tags: Surface Mount, Double Balanced Mixer, Up-Conversion Mixer, Down-Conversion Mixer. More details for MM1A-1855HPSM-2 can be seen below.