The ECRA2400R5B45A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 2397.5 to 2402.5 MHz, Bandwidth 5 MHz, Insertion Loss 1 dB, Rejection 45 dB. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for ECRA2400R5B45A can be seen below.