The 2758 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 12 MHz, Stopband Frequency 40 MHz, 3 dB Cutoff Frequency 12 MHz, Lower Rejection 50 dB@40 MHz, Upper Rejection 3 dB@40 MHz. Tags: Plug In. More details for 2758 can be seen below.