The QLF-55-35 from Qualwave is a Low Pass RF Filter with Frequency DC to 55 MHz, Stopband Frequency 70 to 200 MHz, Insertion Loss 0.8 dB, Upper Rejection 35 dB @ 0.07 to 0.2 GHz, Power 1 W. Tags: Module with Connector. More details for QLF-55-35 can be seen below.