The AE1845NS2182 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 1.81 to 1.88 GHz, Bandwidth 70 MHz, Insertion Loss 3 to 3.2 dB, Rejection 50 dB, Power 2 W. Tags: Module with Connectors, Notch Filter. More details for AE1845NS2182 can be seen below.