The M44.5-7(4X) from Spacek Labs is a RF Mixer with RF Frequency 43.5-45.5 GHz, LO Frequency 9.0-9.5 GHz, IF Frequency 6.6-6.9 GHz, Conversion Loss 5.0 / 6.0 dB. Tags: Module with Connectors, Down-Conversion Mixer. More details for M44.5-7(4X) can be seen below.