The AT-AM4-4570-18C from AT Microwave is a Frequency Multiplier with Input Frequency 11.25 to 17.5 GHz (Input), 45 to 70 GHz(Output), Output Frequency 45 to 70 GHz, Input Power 8 to 13 dBm, Output Power 17 to 22 dBm, Harmonics -25 dBc. Tags: Waveguide, Active, Waveguide Multiplier. More details for AT-AM4-4570-18C can be seen below.