the mind > attention and judgement > discovery > instrument for detection > [noun] > radar system > apparatus used in > direction finder (4)
An apparatus for determining the direction from which radio waves are coming without the need for a rotating aerial. Also called goniometer.
= direction-finder n. at direction, n. compounds 2; abbreviated RDF.
An apparatus for determining the direction from which detected radio waves are coming, without the need for a rotating aerial, consisting…