The EQ3-40 from Marki Microwave is a Gain Equalizer with Frequency DC to 40 GHz, Gain Equalization 3 dB, Insertion Loss 1 to 3 dB, Power 23.98 dBm, Impedance 50 Ohms. Tags: Module with Connectors, Positive Gain Slope. More details for EQ3-40 can be seen below.