26 Apr 2021

Sporadic-E (Es)

In the northern hemisphere we are entering the Es season. With Es, stations up to about 1500km can often be worked on 10m, 6m  and 4m (and occasionally 2m). The most common times are May, June, July and August, although Es openings can occur at any time. 

Often quite low power is needed and signals can be very strong. Es tends to happen just as well in sunspot minimum years as sunspot maximum. 

Occasionally openings can occur over far greater ranges, although I suspect many of these are a different E layer mechanism.

Es is great fun.

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