Adcock direction finder
A form of spaced antenna direction finder for bearing determination embodying one or more pairs of spaced vertical antennas, the members of each pair being differentially interconnected by transmission line.
Note: The object of the design is to minimise response of the system to the horizontally polarised component of the electric field.
Reference: B.S. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)