The E1G518G3 from Microwave Circuits is a Gain Equalizer with Frequency 1.5 to 18 GHz, Gain Equalization 14 dB, Insertion Loss 1 to 15 dB, Power 30 dBm, Impedance 50 Ohms. Tags: Module with Connectors, Positive Gain Slope. More details for E1G518G3 can be seen below.