The AE1574WN2218 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 1.565 to 1.584 GHz, Insertion Loss 1.2 dB, Rejection 30 dB, Power 20 W, VSWR 1.50:1. Tags: Module with Connectors, Notch Filter. More details for AE1574WN2218 can be seen below.