08.04.2010 03:02 PM
NPRM seeks input on DTV signal strength measurement

How should the FCC go about determining the ability of TV viewers in specific locations to receive over-the-air signals from local television stations for the purpose of deciding whether or not a direct-to-home satellite TV service should be allowed to import distant network TV stations?

That’s the question a new Notice of Proposed Rulemaking seeks to answer by seeking input on a wide variety of assumptions about the similarities and differences between NTSC and ATSC signal propagation and reception.

The Satellite Television Extension and Localism Act (STELA) of 2010, enacted Feb. 27, directed the FCC to develop a predictive model that can be used to determine whether viewers at specific locations receive an off-air DTV signal with an antenna at the appropriate signal intensity. The act also instructed the commission to rely upon the Individual Location Longley-Rice (ILLR) model used to develop the predictive model for analog TV signals in setting up the model for DTV signals.

The commission is seeking comment on modifications it is proposing to the ILLR model to make it suitable as a method to predict DTV signal strength. The modifications, detailed in an appendix to the notice, are intended to make the model suitable for measuring signals strength for digital full-power, Class A, low-power and translator stations.

In Appendix B of the NPRM, an Office of Engineering & Technology Bulletin lays out the ILLR computer program for predictive DTV coverage. Specifically, the ILLR computer program “computes the predicted signal strength of DTV stations as received over-the-air at individual viewing locations.” The program must be used in combination with terrain elevation data and a database describing building structures and vegetation, the bulletin said.

In the notice, the commission noted that the decision of Dish Network to launch local-into-local service in all 210 DMAs will dramatically reduce the circumstances in which a subscriber will need access to a distant broadcast TV station.

Post New Comment
If you are already a member, or would like to receive email alerts as new comments are
made, please login or register.

Enter the code shown above:

(Note: If you cannot read the numbers in the above
image, reload the page to generate a new one.)

No Comments Found

Tuesday 03:07 PM
WMUR-TV Says FAA Drone Rules Preclude ENG
The FAA’s current rules and proposed ban on flight over people, requirement of visual line of sight and restriction on nighttime flying, effectively prohibit broadcasters from using UAS for newsgathering. ~ WMUR-TV General Manager Jeff Bartlett

D. Pagan Communications /   Friday 10:35 AM
Blue Line is Hot on the Trail of DPA Microphones
Clyne Media, Inc /   Thursday 09:51 PM
Focusrite Expands RedNet Range

Featured Articles
Discover TV Technology