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HomeProducts and ServicesClient SupportSFO ArincHourly HAP Charts Tuesday, May 26 2015 01:26 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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