The 211BX from ACST GmbH is a Frequency Multiplier with Input Frequency 155 to 185 GHz, Output Frequency 310 to 370 GHz, Input Power 40 to 280 mW, Output Power 18.45 dBm, Frequnecy 155 to 185 GHz. Tags: Waveguide, Frequency Doubler, Waveguide Multiplier. More details for 211BX can be seen below.