The TMAT1921B78-21A | E15Z01P33 from CommScope is a Tower Mount Amplifier with Frequency 1.71 to 2.155 GHz, Power 200 W, Current 240 mA, Voltage 7 to 30 V, Frequency TX 1.93 to 2.155 GHz. Tags: Module with Connectors. More details for TMAT1921B78-21A | E15Z01P33 can be seen below.