The ELHA30B20F from ECHO Microwave is a RF High Pass Filter with Frequency 30 to 1000 MHz, Bandwidth 970 MHz, Insertion Loss 1 dB, Rejection 20 dB (24MHz), 40 dB (DC-20MHz), Return Loss 15 dB. Tags: Surface Mount, Lumped Component Filter. More details for ELHA30B20F can be seen below.