The TLLF-DC-4G4-X from Talent Microwave Inc is a Low Pass RF Filter with Frequency DC to 4.4 GHz, Insertion Loss 1.2 dB, Rejection 50 dB, Upper Rejection >50dB@5 to 11Ghz, Power 15 W. Tags: Module with Connector. More details for TLLF-DC-4G4-X can be seen below.