The AM1422B1643 from Anatech Electronics is a Band Pass Filter with Frequency 1395 to 1450 MHz, Bandwidth 55 MHz, Center Frequency 1422.5 MHz, Insertion Loss 3 dB, Rejection 15 to 30 dB. Tags: Module with Connectors, Ceramic, Ceramic Filter. More details for AM1422B1643 can be seen below.