The DP-R19202060D-T21102170D from AceWavetech is a RF Duplexer with Frequency 2110 to 2170 MHz(TX), 1920 to 2060 MHz(RX), Band 1 2110 to 2170 MHz(TX), Band 2 1920 to 2060 MHz(RX), Insertion Loss 0.8 dB, Isolation 65 dB. Tags: Module with Connectors. More details for DP-R19202060D-T21102170D can be seen below.