The RF modulator is HDMI & RCA in coax out composite converter for Apple TV, Amazon Fire Stick , Fire TV, Roku , HD TV tuner , satellite Set-top / Cable Box or game consoles like PS3 , PS4 , PS5 , Xbox 360 , Xbox One , Nintendo Switch VCRs , Bule-ray / DVD players, camcorders etc. newer HDMI-equipped components to connect with older TVs that don't have HDMI nor AV jacks; Powerful & functional SDR TV demodulator will bring you more benefits & great convenience while saving a lot on your local CATV system with its HDMI , RCA & RF 3 kinds of signals conversion with antenna input , VHF & UHF 2 operating frequencys and up to 136 channel switching etc., You won't regret it ！！！ <br><b>Specs:</b> <br>TV Standard Formats: NTSC <br>Frequency Range: 47~868MHz <br>Bandwidth: 6MHz、7MHz、8MHz <br>Output Level: 80~95dBuV adj <br>Input Level: 0.77Vp-p for 80%+/-10% modulation <br>Sound System: M=4.5MHz、B/G=5.5MHz、I=6.0MHz、D/K=6.5MHz <br>Input Port: HDMI / AV <br>RF Input & Output: F female <br>Input resolution: 1080P/1080i/720P/576P/576i/480p <br>HDMI Version: 1.3 <br>HDCP Version: 1.3