The AM1390B1340 from Anatech Electronics is a Band Pass Filter with Frequency 1.34 to 1.44 GHz, Bandwidth 100 MHz, Center Frequency 1390 MHz, Insertion Loss 2 dB, Upper Rejection 45 dB @ 1700 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1390B1340 can be seen below.