The TMA-S-DB1921-DD-A | E15S09P45 from CommScope is a Tower Mount Amplifier with Frequency 1.71 to 2.155 GHz, IP3 20 dBm, Current 130 mA, Voltage 7 to 30 V, Frequency TX 1.93 to 2.155 GHz. Tags: Module with Connectors. More details for TMA-S-DB1921-DD-A | E15S09P45 can be seen below.