The FMFL022 from Fairview Microwave is a Low Pass RF Filter with Frequency DC to 225 MHz, Stopband Frequency 337 to 450 MHz, 3 dB Cutoff Frequency 225 MHz, Insertion Loss 1 dB, Upper Rejection 40 to 60 dB@337 to 450 MHz. Tags: Module with Connector. More details for FMFL022 can be seen below.