The DP-R19202060W-T21102170W 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 100 dB. Tags: Module with Connectors. More details for DP-R19202060W-T21102170W can be seen below.