STUDY PROGRAM FOR ANALYZING DATA HANDLING CAPABILITY OF A 240 HZ. SLOT WITHIN A NORMAL VOICE BAND

The program covered a research phase as well as a laboratory testing phase, to determine the feasibility of handling data in a 240 Hz slot within the normal voice band over an unconditioned 3002 transmission line. The goals were to determine the maximum data rate and the effects on voice quality. The maximum data error rate was specified as .0001, which included choosing a mod./demod. technique, and the design of filters for notching the voice band and bandpassing the data. Both theoretical and practical aspects of implementing a data slot technique are discussed, along with schematics, tables, and graphs illustrating filter, modulation, and theoretical characteristics of the applied technique. (Author)

• Corporate Authors:

  Orion Systems Incorporated

  602 Mason's Mill Business Park
  Huntingdon Valley, PA  United States  19006

  Federal Aviation Administration

  Systems R&D Service, 800 Independence Avenue, SW
  Washington, DC  United States 
• Authors:
  • Affeldt, F
  • Moors, R
  • Kulesza, C
  • Serafin, J
• Publication Date: 1978-8

Media Info

• Pagination: 174 p.

Subject/Index Terms

• TRT Terms: Circuit analyzers; Communication systems; Data communications; Diagrams; Electrical equipment; Errors; Filters; Modems; Phase shift (Electricity); Phase transitions; Quality control; Radio; Radio frequency; Speech; Transmission lines; Voice communication
• Uncontrolled Terms: Frequency bands
• Old TRIS Terms: Bandpass filters; Circuit analysis; Data rate; Electric filters; Phase shift keyers; Schematic diagrams
• Subject Areas: Aviation; Operations and Traffic Management;

Filing Info

• Accession Number: 00191316
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA/RD-78/116 Final Rpt., OSI-78-FA-SS
• Contract Numbers: DOT-FA78WA-4099
• Files: NTIS, TRIS, USDOT
• Created Date: May 11 1979 12:00AM