Question Pool -- Category G3
You may shorten the list of categories by choosing
one of the ten category groups.
Select one of the following categories. You will be presented
questions at random. Return here when you are ready to try
another category.
- G3A
- Ionospheric disturbances; sunspots and solar radiation
- G3B
- Maximum usable frequency; propagation "hops"
- G3C
- Height of ionospheric regions; critical angle and frequency; HF
scatter
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