INVESTIGATION OF WILCOX MODEL 585B VERY HIGH FREQUENCY OMNIDIRECTIONAL RADIO RANGE SYSTEM PART 2

This report establishes a calibration procedure which employs a space modulation chart to adjust percent modulation for the Wilcox 585B very high frequency omnidirectional radio range (VOR) System. This procedure is recommended for solid-state VOR designed systems in which the rotatable goniometer has been replaced by a solid-state unit. Ground and airborne modulation tests were made using a spectrum analyzer for determining percent modulation. Results of these measurements indicated 1.5 percent modulation be added to the normal 30 percent modulation adjustment when made with the detector at counterpoise edge to provide equality between near and far afield modulation measurements.

  • Corporate Authors:

    Federal Aviation Administration

    William J. Hughes Technical Center, Airport Technology Research and Development Branch
    Atlantic City International Airport
    Atlantic City, NJ  United States  08405

    Federal Aviation Administration

    800 Independence Avenue, SW
    Washington, DC  United States  20591
  • Authors:
    • BELL, W
    • Dong, J
  • Publication Date: 1981-4

Media Info

  • Pagination: 14 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00343004
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-CT-80-45-PT-2, FAA-RD-80-124-PT-2
  • Files: NTIS, USDOT
  • Created Date: Sep 16 2002 12:00AM