11. It also used radio direction finding to maintain course. 12. The KFRR organizes and supports Amateur Radio Direction Finding competitions and the Kazakhstan national ARDF team. 13. Traditional radio direction finding used a loop antenna. 14. The fighters also attacked German ships in Kaafjord and a radio or radio direction finding station. 15. He learned about radio direction finding vehicles in Italy and managed to get some to Finland. 16. This technique, known as radio direction finding ( RDF ), is useful but only moderately accurate. 17. This is commonly used for radio direction finding , providing very precise bearings from a sensitive fixed site. 18. The Germans considered that the technical problems of seaborne radio direction finding could not be adequately solved. 19. Robert Watson-Watt became an expert on the use of radio direction finding as part of his lightning experiments. 20. "Radio Direction Finding " works by comparing the signal strength of a directional antenna pointing in different directions.
