The AE1800L9232 from Anatech Electronics is a Low Pass RF Filter with Frequency DC to 1.8 GHz, 3 dB Cutoff Frequency 1.8 GHz, Insertion Loss 1.2 dB, Rejection 45 dB, Return Loss 12 dB. Tags: Module with Connector. More details for AE1800L9232 can be seen below.