The AM2077S342 from Anatech Electronics is a Band Pass Filter with Frequency 1.04 to 3.12 GHz, Bandwidth 2077.5 MHz, Center Frequency 2077.5, Insertion Loss 1.5 to 2 dB, Upper Rejection 25 dB. Tags: Surface Mount, RF SAW Filter. More details for AM2077S342 can be seen below.