The WR0.51x3 from Virginia Diodes, Inc. is a Frequency Multiplier with Input Frequency 466.7 to 733.3 GHz, Output Frequency 1400 to 2200 GHz, Input Power 0.3 to 8 mW, (9.03 dBm), Harmonics -20 dBc, Frequnecy 466.7 to 733.3 GHz. Tags: Waveguide, Waveguide Multiplier. More details for WR0.51x3 can be seen below.