The EQUL1P-4513-B7B7 from ETL Systems is a Gain Equalizer with Frequency 850 MHz to 2.15 GHz, Gain Equalization 3±0.8 dB, Insertion Loss 2.5 to 3.5 dB, Power 37 dBm (5W), Voltage Supply 28 V. Tags: Module with Connectors, Positive Gain Slope. More details for EQUL1P-4513-B7B7 can be seen below.