Initial Blackbeard power survey results

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Description

The Blackbeard broadband VHF radio receiver is in low-earth orbit aboard the ALEXIS satellite. The receiver has been used to measure the transmitted power in four VHF bands (55.2-75.8, 28.0-94.8, 132.3-152.2, and 107.7-166.0 MHz) over quiet and noisy parts of the earth. The authors present the results of the survey and discuss their implications. They find that there are remote ocean areas over which the observed spectrum is largely free of man-made interference, but that the spectrum over most of the earth is dominated by broadcast VHF signals. The signal characteristics observed over a given area are quite constant when ... continued below

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20 p.

Creation Information

Murphy, T.; Devenport, J. & Holden, D. June 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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Description

The Blackbeard broadband VHF radio receiver is in low-earth orbit aboard the ALEXIS satellite. The receiver has been used to measure the transmitted power in four VHF bands (55.2-75.8, 28.0-94.8, 132.3-152.2, and 107.7-166.0 MHz) over quiet and noisy parts of the earth. The authors present the results of the survey and discuss their implications. They find that there are remote ocean areas over which the observed spectrum is largely free of man-made interference, but that the spectrum over most of the earth is dominated by broadcast VHF signals. The signal characteristics observed over a given area are quite constant when observed at different times of day and at intervals of several weeks to months. It appears that in many cases the bulk of the signal power is coming from a small number of sources.

Physical Description

20 p.

Notes

OSTI as DE96011726

Source

  • Other Information: PBD: Jun 1996

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Identifier

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  • Other: DE96011726
  • Report No.: LA--13083-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/251416 | External Link
  • Office of Scientific & Technical Information Report Number: 251416
  • Archival Resource Key: ark:/67531/metadc664961

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • June 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • Feb. 29, 2016, 9:26 p.m.

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Murphy, T.; Devenport, J. & Holden, D. Initial Blackbeard power survey results, report, June 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc664961/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.