The 1214B-8AC from ACST GmbH is a Frequency Multiplier with Input Frequency 13.75 to 21.25 GHz, Output Frequency 110 to 170 GHz, Input Power 0 to 5 dBm, Output Power 8 to 14 dBm, VSWR 1.80:1. Tags: Waveguide, Waveguide Multiplier. More details for 1214B-8AC can be seen below.