HF Systems
FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeHF SystemsGlobal HFHAP ChartsDaily HAP Charts Thursday, Aug 17 2017 17:30 UT
Global HF

Daily HAP Charts

These are Daily Area Predictions of communication frequencies for the present day and are based on SWS average maps of the ionosphere. Because of the variability of the ionosphere this type of prediction can only be made for the current hour.

Follow the steps below to obtain your daily HAP charts.

Step 1: Select a Location

Step 2: Select a Universal Time (UT) Period

Step 3: Display HAP Chart or Clear selections

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