The ECRA1993F1995C50B from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1993 to 1995 MHz, Bandwidth 4 MHz, Insertion Loss 1.5 dB ( 698-1990, 2100-2200 MHz), Rejection 50 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA1993F1995C50B can be seen below.