The ECRA1920F1980C40B from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1920 to 1980 MHz, Bandwidth 60 MHz, Insertion Loss 1.5 dB, Rejection 40 dB. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for ECRA1920F1980C40B can be seen below.