The 2515 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 50 MHz, Stopband Frequency 73.6 MHz, 3 dB Cutoff Frequency 50 MHz, Lower Rejection 60 [email protected] MHz, Upper Rejection 0.25 [email protected] MHz. Tags: Module with Connector. More details for 2515 can be seen below.