The 2504 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 30 MHz, Stopband Frequency 100 MHz, 3 dB Cutoff Frequency 30 MHz, Lower Rejection 40 dB@100 MHz, Upper Rejection 1 dB@100 MHz. Tags: Plug In. More details for 2504 can be seen below.
