The WR1.9x3 from Virginia Diodes, Inc. is a Frequency Multiplier with Input Frequency 133.3 to 200 GHz, Output Frequency 400 to 600 GHz, Input Power 10 to 150 mW, (21.76 dBm), Harmonics -20 dBc, Frequnecy 133.3 to 200 GHz. Tags: Waveguide, Waveguide Multiplier. More details for WR1.9x3 can be seen below.