The 2968-SMA from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 475 MHz, Stopband Frequency 800 MHz, 3 dB Cutoff Frequency 475 MHz, Lower Rejection 55 dB@800 MHz, Upper Rejection 0.5 dB@800 MHz. Tags: Module with Connector. More details for 2968-SMA can be seen below.