The 2786-4 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 35.025 to 37.225 MHz, Bandwidth 2.2 MHz, Center Frequency 36.125 MHz, Insertion Loss 3 dB, Rejection 40 dB. Tags: DIP, Lumped Component Filter. More details for 2786-4 can be seen below.