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FCC Puts Kabosh On Interference Temperature Model

May 7, 2007

The Federal Communications Commission has issued a ruling that essentially pours cold water on the use of interference temperatures that would, according to advocates, build spectrum allocation and lack of well, interference.

First, here's the United Telecom Council's take on interference temperatures:

"Interference is presently minimized through coordination of the frequency, radiated power and location of individual transmitters. Under the interference temperature model, a maximum noise level would be set for an entire band and new systems could be placed in service if it is anticipated that the interference temperature limit would not be exceeded. Several methods are proposed for monitoring interference temperature, but there is no guarantee that any of these theoretical systems will work or that licensed systems will not receive harmful interference. Because new users would be unlicensed, locating each offender and resolving interference would be an impossible task."

With that lack of enthusiasm, its no wonder that the FCC ruled on Friday that:

Commenting parties generally argued that the interference temperature approachis not a workable concept and would result in increased interference in the frequency bands where it would be used.1 While there was some support in the record for adopting an interference temperature approach, no parties provided information on specific technical rules that wecould adopt to implement it. 2. Further, with the passage of time, the Notice and the record in this proceeding have become outdated. We are therefore terminating this proceeding without prejudice to its substantive merits.

Accordingly, IT IS ORDERED that, pursuant to Sections 4(i) and 4(j) of the Communications Act, 47 U.S.C. §§ 154(i) and 154(j), ET Docket No. 03-237IS TERMINATED, effective upon issuance of this Order.

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