modern-day devices with analog outputs have typically omitted the modulator option in favor of composite and s-video outputs (or have switched to using hdmi or other digital video formats) as composite and s-video have become more common as inputs for tvs. in addition, many tv sets sold these days no longer have analog television tuners and cannot accept channel 3/4 from a modulator. but because composite video has a well-established market for both devices that convert it to channel 3/4 outputs, as well as devices that convert things like vga to composite, it has offered opportunities to repurpose older composite monitors for newer devices.