When closer may we avail ourselves of your direction finder.

You can't use those things as direction finders, at least not effectively.

Without the direction finder, we have only your Eagle to guide us.

That had happened to at least five people since the direction finder had been lost.

His car, equipped with two-way radio, was a perfect direction finder.

"The bad guys could vector in on our position with direction finders."

What if they do put direction finders on us?

Or, with a thrill of hope bubbling inside me, a direction finder.

The little whine in his head changed, became more of a direction finder.

But a direction finder could have betrayed his position.