The 225D from ACST GmbH is a Frequency Multiplier with Input Frequency 91.6 to 98.33 GHz, Output Frequency 275 to 295 GHz, Input Power 16 to 20 dBm, Output Power 7 to 13 dBm, VSWR Input 1.45:1, 1.6:1, 1.9:1. Tags: Waveguide, Waveguide Multiplier. More details for 225D can be seen below.