Vintage 1970's Swan ADF-100 automatic direction finder. Radios such as this were used for marine navigation before the advent of GPS made them obsolete. The radio finds the direction to a radio tower by rotating it's antenna. By finding the bearing to two or more such towers, one's position could be plotted on a chart. For more information: www.angelfire.com
Tags: radio, direction, finder, rdf, adf, vintage, marine, collectible, navigation
No comments:
Post a Comment