Satellite Television Extension and Localism Act of 2010 and Satellite Home Viewer Extension and Reauthorization Act of 2004

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This document invites comment the submission of additional information concerning the methodological changes for the digital ILLR model with respect to the calculation of diffraction loss close to an obstacle or leading up to and following a pair of obstacles; and a factual or scientific basis for explaining the additional losses in the line of sight range above and beyond the free space loss and two-ray- loss. The Commission is particularly interested in information on any other techniques for improving the degree to which the model accurately represents the propagation of a digital television signal from a transmitter to a specific receive site and any new data that may be available for improving the model's predictions.