The QFM2-50000-75000 from Qualwave is a Frequency Multiplier with Input Frequency 25 to 37.5 GHz, Output Frequency 50 to 75 GHz, Input Power 22 dBm, Output Power 6 dBm, Voltage 5 V. Tags: Waveguide, Waveguide Multiplier, Frequency Doubler. More details for QFM2-50000-75000 can be seen below.