They would hold her on the radio beam better than he ever could.

It'll be simple for them to send out a radio beam and touch our invisible ship with it.

That made it fit with the findings from the radio beam.

The Shadow continued to use his compass as a check on the radio beam.

He noted that Burbank seemed to be having trouble with the radio beam.

It could contain compact equipment for sending a radio beam.

A moment more and Burbank would have had them connected to send a message by the radio beam.

Later, a second radio beam was added, which created a three-dimensional path through space.

I stopped running and crouched down and used the radio beam myself.

Each site sent out a radio beam to its neighboring site.