The EQUL1P-4509-S5S5 from ETL Systems is a Gain Equalizer with Frequency 850 MHz to 2.15 GHz, Gain Equalization 9±1.0 dB, Insertion Loss 7 to 8.5 dB, Power 16 dBm (40mW), Voltage Supply 35 V. Tags: Module with Connectors, Positive Gain Slope. More details for EQUL1P-4509-S5S5 can be seen below.