The 2965-SMA from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 496.5 to 503.5 MHz, Bandwidth 7 MHz, Center Frequency 500 MHz, Insertion Loss 1 dB, Rejection 40 dB. Tags: Module with Connectors, Lumped Component Filter. More details for 2965-SMA can be seen below.