The ECRA1575R4C60B from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1573.42 to 1577.42 MHz, Bandwidth 4 MHz, Insertion Loss 1.5 dB ( DC-1560 MHz), 1.0 dB ( 1661-4000 MHz), Rejection 60 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA1575R4C60B can be seen below.