The ECRA1620F1670J40A from ECHO Microwave is a Band Stop Filter with Stopband Frequency 1620 to 1670 MHz, Bandwidth 50 MHz, Insertion Loss 5.0 dB ( 1000-1610, 1680-2000 MHz), Rejection 40 dB. Tags: Module with Connectors, Ceramic Filter. More details for ECRA1620F1670J40A can be seen below.