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      • KRMA-TV (PBS) Denver, CO
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Propagation Analysis

Key Bridge has developed a comprehensive suite of interference analysis and signal propagation tools to map protected service contours and analyze geographic signal propagation.

Contact us for more information.

Protected Services Contours and Field Strength Analysis

Example Shown:

  • KRMA-TV (PBS) Denver, CO
  • RF Channel 18
  • Effective ERP: 1,000 kW RCAMSL: 2,361 m HAAT: 326 M

The protected services contour represents the geographic extent of legal interference protection to which a licensed transmitter is entitled. The contour does not necessarily represent the maximum extent of a strong signal or viable service reception.

This is an important detail for prospective TV Bands service providers. While the spectrum may be available for unlicensed operation it may not be suitable for wireless data service.

To illustrate this point we have superimposed the 41 dBu television services protected contour (red line) over a Longley Rice field strength analysis, also calculated to 41 dBu, for KRMA-TV, RF channel 18 in Denver, Colorado.

Key Bridge has developed a comprehensive suite of interference analysis and signal propagation tools to map protected service contours and analyze geographic signal propagation.

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