The 2750 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 165 MHz, Stopband Frequency 225 MHz, 3 dB Cutoff Frequency 165 MHz, Lower Rejection 50 dB@225 MHz, Upper Rejection 0.75 dB@225 MHz. Tags: Surface Mount. More details for 2750 can be seen below.