The AE1905WN2222 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 1.88 to 1.93 GHz, Insertion Loss 1.5 dB, Rejection 40 dB, Power 50 W, Return Loss 14 dB. Tags: Module with Connectors, Notch Filter. More details for AE1905WN2222 can be seen below.