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Radio Propagation


Solar X-rays:
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Geomagnetic field:
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D-Region Absorption
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Created by PA4RM

As part of efforts under way to help protect the health and safety of ARRL Headquarters employees and volunteers from the impacts of the coronavirus, ARRL has decided to suspend all tours and guest visits to Hiram Percy Maxim Memorial Station W1AW and ARRL Headquarters, effective Monday, March 16. Out of an abundance of caution, this suspension will be in effect until further notice.

We apologiz...

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