The DBMU0301430530A from Qotana is a Multiplexer with Frequency 1435 to 1525 MHz / 2.2 to 2.4 GHz / 4.4 to 5.3 GHz, Insertion Loss 0.3 to 0.6 dB, Isolation 60 to 70 dB, Power handling 50 W, Return Loss 18 to 19.5 dB. Tags: Module with Connectors. More details for DBMU0301430530A can be seen below.