The ELELA1000C20A from ECHO Microwave is a Low Pass RF Filter with Frequency 500 to 1000 MHz, Bandwidth 500 MHz, Insertion Loss 1.5 dB, Rejection 20 min. @ 1200MHz, Return Loss 14 dB. Tags: Module with Connector, Lumped Component Filter. More details for ELELA1000C20A can be seen below.