The 215B from ACST GmbH is a Frequency Multiplier with Input Frequency 158 to 180 GHz, Output Frequency 475 to 540 GHz, Input Power 40 to 160 mW, Output Power 13.01 dBm, Frequnecy 158 to 180 GHz. Tags: Waveguide, Passive, Waveguide Multiplier. More details for 215B can be seen below.