The E2003G52 from Microwave Circuits is a Gain Equalizer with Frequency 200 MHz to 3.5 GHz, Gain Equalization 6 dB, Insertion Loss 1.5 to 7.5 dB, Power 30 dBm, Impedance 50 Ohms. Tags: Module with Connectors, Positive Gain Slope. More details for E2003G52 can be seen below.