INVESTIGATION OF WILCOX MODEL 585B VERY HIGH FREQUENCY OMNIDIRECTIONAL RADIO RANGE (VOR) SYSTEM. PART 3

A three-part investigation of the Wilcox 585B Very High Frequency Omnidirectional Radio Range (VOR) System was conducted. In Part 1, the magnitude of the ground error was reduced by modification and suitable adjustment of antenna element lengths of the field detector, In Part 2, investigation developed an acceptable calibration procedure for system 30 hertz (Hz) modulation. Obtaining compatible 30 Hz modulation reading between aircraft (far-field) and edge of counterpoise (near-field) measurements was an additional requirement. In Part 3, tests resolved any discrepancies in the tuning adjustments prescribed by the manufacturer's equipment manuals. This report, which is the last in a series of three, contains an outline of the tests and procedures for setting the lengths of the adjustable field detector elements, a recommended procedure for obtaining compatible near-field and airborne 30 Hz modulation readings, and recommended changes to the manufacturer antenna tuning procedures in order that the system meet required operational tolerances. (Author)

• Supplemental Notes:
  • See also Part 2, AD-A099 525.
• 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 E
• Publication Date: 1981-10

Media Info

• Pagination: 53 p.

Subject/Index Terms

• TRT Terms: Air traffic control; Aircraft; Antennas; Components; Detectors; Errors; Far field; Industries; Length; Modulation (Communications); Near field; Position fixing; Radio beacons; Radomes; Range (Vehicles); Reduction (Chemistry); Solid state electronics; Spectrum analyzers; Test procedures; Tests; Tolerances (Engineering); Very high frequency
• Old TRIS Terms: Antenna components; Extendable structures; Field equipment; Ground level; Modulation; Position finding; Range distance; Reduction; Test and evaluation; Tolerance
• Subject Areas: Aviation; Operations and Traffic Management; Vehicles and Equipment;

Filing Info

• Accession Number: 00347771
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA-CT-81-46, FAA-RD-81-52
• Files: NTIS, USDOT
• Created Date: Feb 27 2003 12:00AM