The QLF-5-50 from Qualwave is a Low Pass RF Filter with Frequency DC to 5 MHz, Stopband Frequency 8 to 15 MHz, Insertion Loss 1 dB, Upper Rejection 50 dB @ 8 to 50 MHz, VSWR 1.50:1. Tags: Module with Connector. More details for QLF-5-50 can be seen below.