The 213B from ACST GmbH is a Frequency Multiplier with Input Frequency 76.66 to 86.66 GHz, Output Frequency 230 to 265 GHz, Input Power 80 to 400 mW, Output Power 19.54 dBm, Frequnecy 76.66 to 86.66 GHz. Tags: Waveguide, Passive, Waveguide Multiplier. More details for 213B can be seen below.