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An "all-blue" channel is an artifact of your television. Modern televisions put up a solid color rather than snow when they fail to detect a carrier wave on the

by db48x 11y ago

An "all-blue" channel is an artifact of your television. Modern televisions put up a solid color rather than snow when they fail to detect a carrier wave on the chosen channel.

recursive 11y ago
The mechanics don't really matter. It's still just as effective.
- db48x 11y ago
  Ok, but the "all-blue channel" is just the TV turning all the lights blue when it can't find a signal. Why bring a TV into it if you can just put up blue lights?