The AE1745WN2252 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 1.71 to 1.78 GHz, Insertion Loss 1.5 to 2.5 dB, Rejection 40 dB, Power 50 W, VSWR 1.50:1. Tags: Module with Connectors, Notch Filter. More details for AE1745WN2252 can be seen below.