The AE450-1900DB5348 from Anatech Electronics is a Diplexer with Frequency f1 405 to 495 MHz, Frequency f2 800 to 3000 MHz, Insertion loss 0.5 dB, Insertion loss f1 0.5 dB, Insertion loss f2 0.5 dB. Tags: Module with Connectors, Cavity. More details for AE450-1900DB5348 can be seen below.