Voice over radio chan­nels (radiotele­pho­ny or just “phone”) is prob­a­bly the most pop­u­lar form of Ama­teur Radio. A num­ber of mod­u­la­tion modes are avail­able to sup­port voice work.


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Solar-Terrestrial Data


Geomagnetic Field status monitor

Solar X-rays:

Geomagnetic Field:
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