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Features of the original document layout such as columns, tables, line and letter spacing, pagination, and margins will not be preserved in the text version. If you need the complete document, download the WordPerfect version or Adobe Acrobat version, if available. For the reasons stated below, we are granting a 60-day extension of time. In support of its current extension request, NAB asserts that additional time is required for important technical studies that will help the Commission determine the impact of an LPFM service on existing full power stations and on their transition to digital broadcasting. NAB states that it is examining the interference rejection characteristics of different types of commercially available radios.