The 2922 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 114 MHz, Stopband Frequency 121.7 MHz, 3 dB Cutoff Frequency 114 MHz, Lower Rejection 40 [email protected] MHz, Upper Rejection 2.5 [email protected] MHz. Tags: Module with Connector. More details for 2922 can be seen below.