NTSC Format Output: HDMI to RF Modulator supports NTSC format output, with a frequency range of CH3=61.25MHz and CH4=67.25MHz, and supports multiple resolutions - 1080P/1080i/720P/576P/576i/480p. Plug & Play: HDMI to RF modulator requires no driver installation; is portable, flexible, and ready to use straight out of the box.