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HomeProducts and ServicesClient SupportSFO ArincHourly HAP Charts Thursday, Dec 18 2014 10:29 UT
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Hourly HAP Charts

These are Hourly Area Predictions (HAP) of communication frequencies based on current observed global ionospheric world map. Because of the variability of the ionosphere this type of prediction can only be made for the current hour.

SFO Oakland and Anchorage Flight Information Regions

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