The DF3RC978L-2M from Innertron is a Band Pass Filter with Frequency 977 to 979 MHz, Bandwidth 2 MHz, Center Frequency 978 MHz, Insertion Loss 3 dB, Rejection 30 to 35 dB@ 928 to 1028 MHz. Tags: Surface Mount. More details for DF3RC978L-2M can be seen below.