The AM155CR151 from Anatech Electronics is a Band Pass Filter with Frequency 155.5 to 155.54 MHz, Bandwidth 0.04 KHz, Center Frequency 155.52 MHz, Insertion Loss 7 dB, Lower Rejection 60 dB, 100 kHz to 3 GHz. Tags: Surface Mount, Crystal Filter. More details for AM155CR151 can be seen below.