The AM882B1391 from Anatech Electronics is a Band Pass Filter with Frequency 878.75 to 886.25 MHz, Bandwidth 7.5 MHz, Center Frequency 882.5 MHz, Insertion Loss 3.0 dB, Upper Rejection 25 dB @ 830-845 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM882B1391 can be seen below.