The AE881-881DB5388 from Anatech Electronics is a RF Duplexer with Frequency 869 to 894 MHz, Band 1 869 to 894 MHz(Band pass Section), Band 2 869 to 894 MHz (Notch Section), Insertion Loss 2.5 dB, Attenuation 41 to 58 dB. Tags: Module with Connectors. More details for AE881-881DB5388 can be seen below.