But as they all kept radio silence, there was no way to be sure.

However, the radio silence might be good news in one respect.

There was still five hours of radio silence yet to go.

Twice in the hour, for three minutes, there is a period of radio silence.

I should have been suspicious about this long radio silence.

Everyone was on radio silence except for them, and they were to break it only in an emergency.

We think they go with radio silence when they've got the explosives out.

There was a moment's radio silence, then Anne's voice came through.

And if it was anything but a Bear, he'd have broken radio silence.

Again, there was no connection, nothing, just a radio silence.