This is in fact the only detection of these sources outside of the radio band.

"And how am I supposed to know where that is on the radio band?"

The following table lists the common center frequencies used in the amateur radio bands.

It was as if they were broadcasting on two different radio bands.

That's why you didn't hear it on their radio band.

In the meantime, I shall continue to monitor the radio band.

Abruptly, he received a direct call on another radio band.

Over the German radio band, men were shouting orders all along the lines.

It isn't in any of the conventional radio bands.

We were monitoring what passes for their radio band these days.