The ECRA882F917C27A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 882.5 to 917.5 MHz, Bandwidth 35 MHz, Insertion Loss 1.3 dB ( 548-852, 948-1252 MHz), Rejection 27 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA882F917C27A can be seen below.