However medium or short wave transmissions received following refraction by the ionosphere are strongly affected .
The magnitude of Faraday rotation caused by such a plasma is greatly exaggerated at lower frequencies , so at the higher microwave frequencies used by satellites the effect is minimal .
Medium or short wave transmissions received following refraction by the ionosphere are strongly affected .
The magnitude of Faraday rotation caused by such a plasma is greatly exaggerated at lower frequencies , so at the higher microwave frequencies used by satellites the effect is minimal .