The 1217F-6AC from ACST GmbH is a Frequency Multiplier with Input Frequency 13.83 to 20.83 GHz, Output Frequency 83 to 125 GHz, Input Power 0 to 5 dBm, Output Power 15 to 19 dBm, VSWR 1.80:1. Tags: Waveguide, Waveguide Multiplier. More details for 1217F-6AC can be seen below.