The AE897-942DB770 from Anatech Electronics is a RF Duplexer with Frequency 890 to 905 MHz / 935 to 950 MHz, Band 1 890 to 905 MHz, Band 2 935 to 950 MHz, Insertion Loss 1 dB, Isolation 80 dB. Tags: Module with Connectors. More details for AE897-942DB770 can be seen below.