The 216B from ACST GmbH is a Frequency Multiplier with Input Frequency 27.5 to 43.5 GHz, Output Frequency 55 to 85 GHz, Input Power 50 to 1400 mW, Output Power 20 to 23.97 dBm, Frequnecy 27.5 to 43.5 GHz. Tags: Waveguide, Frequency Doubler, Waveguide Multiplier. More details for 216B can be seen below.