How do I Convert RCA Red White Yellow to a Coax Cable Output?

Updated July 20, 2017

Composite cables were the standard "better" way to connect an audio/video device to a television in the 1990s. A cable consisted of three channels: yellow for video, white for left-side audio and red for right-side audio. Coaxial cables are the standard connection method currently used in television. The cable has only one connector, instead of the three in a composite cable. Connecting composite cables (red, white and yellow) to coaxial is simple but requires an additional device.

Visit your local electronics retail store to find a "composite to coaxial adaptor/modulator." The device may run from £6 to £13. Alternatively, buy it online, but be sure the product performs the function you want.

Connect the composite cables to the correct inputs on the adaptor/modulator. Connect the adaptor cable to your TV (via the extra coaxial cable).

Turn on all your devices and search channels 3 to 4 on your TV for the video.


Some adaptors/modulators have extra requirements (for example: a DC power supply). Be sure to follow your device's instructions for proper set-up.

Things You'll Need

  • Composite cables
  • Coaxial input
  • Coaxial cable
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About the Author

Richard Klopfenstein began writing in 2009 as a political editorialist for "The Independent Florida Alligator." Klopfenstein's expertise includes improvisation, comedy, design, photography and television production management. He recently graduated from the University of Florida with a degree in journalism.