The AET/AER-15-0001 from Farran is a Antenna Test & Measurement Frequency Extension System with Dynamic Range 120 to 135 dB, Frequency 50 to 75 GHz, LO Frequency 8.33 to 12.5 GHz, Output Power 7 dBm, RF Input Frequency 12.5 to 18.75 GHz. More details for AET/AER-15-0001 can be seen below.