The AE2535NS2179 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 2.5 to 2.56 GHz, Bandwidth 37 MHz, Insertion Loss 2 dB, Rejection 40 dB, VSWR 1.50:1. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for AE2535NS2179 can be seen below.