Directions are difficult at best on Venus, and his radio-compass proved faulty.
The man he had been sent to track down by means of the radio-compass was coming south over the trail.
A number of radio-compass stations have been located around the entrance and approach to New York Harbor.
Ill go over to the radio-compass and listen and you send and see if I hear anything.
By a single move of the hand, Coles Masters indicated the radio-compass he had been listening in on.
He adjusted the coil of a radio-compass here, another there and still another here.
Instantly his hands flew to the radio-compass as he muttered.
Automatically Curlie's fingers moved the radio-compass backward and forward while his37 mind gauged the distance.
“Got—gotta get him,” he mumbled as his slim fingers caressed his radio-compass coil.
The man, so the radio-compass had said, had taken the trail which led straight away toward the Arctic Ocean.