The AM1669B997 from Anatech Electronics is a Band Pass Filter with Frequency 1.64 to 1.7 GHz, Bandwidth 60 MHz, Center Frequency 1669 MHz, Insertion Loss 1.6 dB, Upper Rejection 16 dB @ 1869 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1669B997 can be seen below.