The ECRA1710F1785D40B from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1710 to 1785 MHz, Bandwidth 75 MHz, Insertion Loss 1.7 dB, Rejection 40 dB. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for ECRA1710F1785D40B can be seen below.