The 2490 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 7 MHz, Stopband Frequency 12 MHz, 3 dB Cutoff Frequency 7 MHz, Lower Rejection 30 dB@12 MHz, Upper Rejection 1 dB@12 MHz. Tags: Module with Connector. More details for 2490 can be seen below.
