The 2289-150 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 150 MHz, Stopband Frequency 175 MHz, 3 dB Cutoff Frequency 150 MHz, Lower Rejection 45 dB@175 MHz, Upper Rejection 4 dB@175 MHz. Tags: Plug In. More details for 2289-150 can be seen below.