The DP-R782W-T744W from AceWavetech is a RF Duplexer with Frequency 728 to 759 MHz(TX), 776 to 788 MHz(RX), Band 1 728 to 759 MHz(TX), Band 2 776 to 788 MHz(RX), Insertion Loss 1 dB, Isolation 65 dB. Tags: Module with Connectors. More details for DP-R782W-T744W can be seen below.