The 2489 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 33 MHz, Stopband Frequency 45 MHz, 3 dB Cutoff Frequency 33 MHz, Lower Rejection 30 dB@45 MHz, Upper Rejection 1 dB@45 MHz. Tags: Module with Connector. More details for 2489 can be seen below.
