The ERZ-EQU-1800-4000-25 from ERZIA is a Gain Equalizer with Frequency 18 to 40 GHz, Gain Equalization -26 to 0 dB, Insertion Loss -23 to -3 dB, Power 22 dBm, Operating Temperature -40 to 85 Degree C. Tags: Module with Connectors, Positive Gain Slope. More details for ERZ-EQU-1800-4000-25 can be seen below.