The 2788 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 85 MHz, Stopband Frequency 215 MHz, 3 dB Cutoff Frequency 85 MHz, Lower Rejection 60 dB@215 MHz, Upper Rejection 3 dB@215 MHz. Tags: Plug In. More details for 2788 can be seen below.