The ECRA8440R120C45AFM from ECHO Microwave is a Band Stop Filter with Stopband Frequency 8380 to 8500 MHz, Bandwidth 120 MHz, Insertion Loss 1.5 dB ( 6000-7500, 9300-10000 MHz), Rejection 45 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA8440R120C45AFM can be seen below.