The AM3400B998 from Anatech Electronics is a Band Pass Filter with Frequency 3.3 to 3.5 GHz, Bandwidth 200 MHz, Center Frequency 3400 MHz, Insertion Loss 2.0 dB, Upper Rejection 30dB @ 3600 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM3400B998 can be seen below.