Larry Dighera schreef:

So what sort of impact on radio propagation/reception should one
expect a solar hole to impose?

There are no holes in the sun, there are in the corona though. The
correct term is Coronal Hole.

My knowledge on propagation needs more deepening (although I have great
interest in Aurora, hence my knowledge on these happenings). Although I
have a base knowledge I hope someone else will chime in who has more
knowledge to ensure I wont feed you nonsense

Does a solar hole result in only increasing the velocity of the solar
wind without the massive increase in particle count that occurs during
a CME event?

A CME is a massive flare with lots of particles released in sudden
events, CHs are more of a steady stream of particles that is however
lots lower in number of particles then a CME.

This is debatable, but CH's should increase proper propagation, and CMEs
can cause storms and as such actually stop propagation.

But again, I hope someone with proper knowledge of spaceweather will
chime in.

--
JeroenK