The TLLF-DC-300M-L5 from Talent Microwave Inc is a Low Pass RF Filter with Frequency DC to 300 MHz, Stopband Frequency 450 to 600 MHz, Insertion Loss 1 dB, Rejection 45 to 60 dB @450 to 600 MHz, Power 10 W. Tags: Module with Connector. More details for TLLF-DC-300M-L5 can be seen below.