The 214B from ACST GmbH is a Frequency Multiplier with Input Frequency 55 to 85 GHz, Output Frequency 110 to 170 GHz, Input Power 50 to 250 mW, Output Power 13.97 dBm, Frequnecy 55 to 85 GHz. Tags: Waveguide, Frequency Doubler, Waveguide Multiplier. More details for 214B can be seen below.