The E03G18G3 from Microwave Circuits is a Gain Equalizer with Frequency 3 to 18 GHz, Gain Equalization 27 dB, Insertion Loss 4.6 to 31.6 dB, Power 30 dBm, Impedance 50 Ohms. Tags: Module with Connectors, Positive Gain Slope. More details for E03G18G3 can be seen below.