The 920B from MI-WAVE is a RF Mixer with RF Frequency 33 to 50 GHz, LO Frequency 8000 - 12000 MHz, IF Frequency 33 to 50 GHz, LO Drive - Power +18 dBm, Operating Temperature 0 to +50 Degrees C. Tags: Module with Connectors, Harmonic Mixer. More details for 920B can be seen below.