The AE725NS2147 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 601 to 849 MHz, Insertion Loss 0.75 dB, Rejection 40 to 50 dB, Power 100 W, Return Loss 14 dB. Tags: Module with Connectors, Cavity Filter, Notch Filter. More details for AE725NS2147 can be seen below.