The AE1575NS2174 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 1.54 to 1.6 GHz, Bandwidth 60 MHz, Insertion Loss 1 dB, Rejection 48 to 80 dB, Power 80 W. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for AE1575NS2174 can be seen below.