The 214G from ACST GmbH is a Frequency Multiplier with Input Frequency 45 to 70 GHz, Output Frequency 90 to 140 GHz, Input Power 50 to 250 mW, Output Power 14.77 dBm, Frequnecy 45 to 70 GHz. Tags: Waveguide, Frequency Doubler, Waveguide Multiplier. More details for 214G can be seen below.