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SMPTE Meetings and Conferences ( October 1998)
[ACTIVE]

WRAL-HD DTV Complete Field Testing Report

Metadata

Publisher
SMPTE — White Plains, NY
Doc Type
Conference Paper
Content Type
Original Research
Volume
1998, No. 7, pp. 1–30
Abstract
WRAL-HD conducted one of the nation's first DTV field tests. This report will explain the testing methods, results and analysis of this test with the final section devoted to comparisons with measured NTSC reception. The testing consisted of four phases that explored different aspects of the new transmission service. In the different areas of testing the results found were that outdoor service availability of the 100 kW HDTV service was 89.6% when measured to 65 miles. Also, a horizontally-polarized transmitting antenna was compared to a circularly- polarized transmitting antenna with no significant advantage or disadvantage found for either antenna to existing receive antennas. Testing was included from inside of various residences and showed that the problems, which have always affected indoor NTSC reception, will need to be addressed with DTV. Finally, WRAL-HD's side-mounted DTV transmitting antenna was tested for pattern nulls and receiver white noise enhancement and showed that the tower does have an effect on the DTV transmission, but it is minimal and should not prevent the implementation of this type antenna. This report also contains some detailed comparisons between a 5000 kW NTSC signal and the DTV signal. With the NTSC signal enjoying not only a greater power but other transmission advantages as well, the outdoor service availability of the NTSC was 92.5% and for the DTV signal it was 91.8%. These comparisons were also evaluated for indoor reception. This report will detail these and other findings.
Publication Date
1998-10-01
DOI
10.5594/M00271
Link
https://doi.org/10.5594/M00271
Author(s)
Luther H. RitchieWRAL-HD/Capitol Broadcasting Company Raleigh, North Carolina
Copyright
© 1998 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • Reference 1: “Field Test Results of the Grand Alliance HDTV Transmission Subsystem,” submitted by MSTV, CableLabs, and PBS to SS/WP-2 Field Testing Task Force of ACATS, September 16, 1994 . EXTERNAL
  • Reference 2: “Results of the Terrestrial Broadcast Transmission of the Grand Alliance HDTV System,” submitted by MSTV, CableLabs, and PBS to SS/WP-2 Field Testing Task Force of ACATS, October 16, 1995 . EXTERNAL
  • Reference 3: “Tribune/WGN DTV Field Test,” written by Mike McKinnon, Marc Drazin, and Gary Sgrignoli, July 1998 —Available at www.wgntv.com/dtv/ . EXTERNAL
  • Reference 4: “WRAL-HD DTV Field Testing,” delivered by Luther Ritchie at 1998 NAB Broadcast Engineering Conference on April 8, 1998—Available at www.wral-hd.com . EXTERNAL
  • Reference 5: “WRAL-HD Field Test Report,” July 1997—Copy on file with the FCC and available at www.wral-hd.com . EXTERNAL
  • Reference 6: “ATSC Field Test Vehicle Design Information,” written by Gary Sgrignoli—Internal Zenith memo and HDTV Model Station Project RF Working Group. EXTERNAL
  • Reference 7: “ATSC Outdoor DTV Field Test Plan,” written by Gary Sgrignoli—Internal Zenith memo and HDTV Model Station Project RF Working Group. EXTERNAL
  • Reference 8: “ATSC Indoor DTV Field Test Plan,” written by Gary Sgrignoli—Internal Zenith memo and HDTV Model Station Project RF Working Group. EXTERNAL
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Luther H. Ritchie; WRAL-HD DTV Complete Field Testing Report, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998. Available at https://doi.org/10.5594/M00271
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Luther H. Ritchie; WRAL-HD DTV Complete Field Testing Report, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998. Available at https://doi.org/10.5594/M00271

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Luther H. Ritchie; WRAL-HD DTV Complete Field Testing Report, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998. Available at https://doi.org/10.5594/M00271
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<span class="citation">Luther H. Ritchie; <cite>WRAL-HD DTV Complete Field Testing Report</cite>, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998. Available at <a href="https://doi.org/10.5594/M00271" target="_blank" rel="noopener">https://doi.org/10.5594/M00271</a></span>

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Luther H. Ritchie; WRAL-HD DTV Complete Field Testing Report, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998
doi: 10.5594/M00271
url: https://doi.org/10.5594/M00271
Snippet:
<li>
Luther H. Ritchie; <cite id="bib-10-5594-m00271">WRAL-HD DTV Complete Field Testing Report</cite>, SMPTE Meetings and Conferences ( October 1998); SMPTE, 1998
<span class="doi">10.5594/M00271</span>
</li>