The 2820-8.7 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 7.45 to 9.95 MHz, Bandwidth 2.5 MHz, Center Frequency 8.7 MHz, Insertion Loss 3 dB, Rejection 60 dB. Tags: PCB Mount, Surface Mount, Lumped Component Filter. More details for 2820-8.7 can be seen below.