radio beam

We can have no warning, I suppose; your ship will outrace the radio beam.

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

"A way of transmitting real power in a radio beam," said the 'copter man.

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

The rockets of the tiny missile were flaming, but that flame was visible only from the rear and no radio beam was upon it.