Most of the signals were not strong enough to use.

"What sort of signal is that to other officials in the state?"

Maybe it is some kind of signal to the market.

But pressure is building on the administration for some sort of signal about its plans.

There must be some kind of a signal to bring them out.

The approach to the station, from the south, was the site of the only signal on the line.

He said a variety of such signals were now on the market.

"Should we have some sort of signal, in case you want to call it off?"

He was asked what kind of signal his visit would send.

In some cases a complete loss of signal can happen.