The 2332 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 20 MHz, Stopband Frequency 22.5 MHz, 3 dB Cutoff Frequency 20 MHz, Lower Rejection 25 [email protected] MHz, Upper Rejection 3 [email protected] MHz. Tags: Plug In. More details for 2332 can be seen below.