The ECRA2550F2600D30A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 2550 to 2600 MHz, Bandwidth 50 MHz, Insertion Loss 2 dB, Rejection 30 dB. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for ECRA2550F2600D30A can be seen below.