Radio Navigation. Part 3

Title self-explanatory. (SN 1059-4; [50?] 7 frames, synchronized disc, [20?] minutes) Radio Navigation. Pan 4: Irregularities in Radio Range Operation U.S. Department of the Navy, 1943. (Instrument Flight Control Series) Causes of irregularities of L.F. radio range operation; instrument approach procedures. 1942. (SN 1059-j; 41 frames, synchronized disc, 20 minutes) 653, 18 41 Radio Navigation. Part 5 41 U.S. Department of the Navy, 1944. (Instrument Flight Control Series) Principles of operation and uses of radio direction finder. (SN 1059-k; 93 frames,