The ECRA1920F1980C52A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1920 to 1980 MHz, Bandwidth 60 MHz, Insertion Loss 1.4 dB ( 0-1900, 2000-3000 MHz), 2.1 dB ( 3000-3600 MHz), Rejection 52 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA1920F1980C52A can be seen below.