The ECRA1805S1880D30A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1805 to 1880 MHz, Bandwidth 75 MHz, Insertion Loss 2 dB, Rejection 30 dB. Tags: Module with Connectors, Notch Filter, Cavity Filter. More details for ECRA1805S1880D30A can be seen below.