The 2556 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 175 MHz, Stopband Frequency 225 MHz, 3 dB Cutoff Frequency 175 MHz, Lower Rejection 45 dB@225 MHz, Upper Rejection 1.5 dB@225 MHz. Tags: Plug In. More details for 2556 can be seen below.
