The contact was not painting brightly on his radar scope.

He watched the radar scope carefully, judging his approach angle.

He stared at his radar scope, willing the missile away from them.

"I think terrorism has certainly been something on our radar scope," he said.

Surely his tiny plane must ave been on their radar scope.

He's disappeared from the radar scope for the last few days.

He didn't speak much Russian, just a few phrases, but a radar scope looks the same in any language.

It means you're hard to detect, either on a radar scope or to the eye.

He knew the Russians were aware of his presence; they'd have had him on their own radar scopes for some minutes now.

No crime and Trevor had disappeared from their radar scope.