The 2751-SMA from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 67.76 to 87.76 MHz, Bandwidth 20 MHz, Center Frequency 77.76 MHz, Insertion Loss 3 dB, Rejection 60 dB. Tags: Module with Connectors, Lumped Component Filter. More details for 2751-SMA can be seen below.