SW reception?
On Jan 19, 11:06*pm, wrote:
On Jan 18, 8:36*am, dave wrote:
On 01/18/2011 04:30 AM, Keith wrote:
* The sun spots are very low right now which effects the ionosphere..
Here is a short article on the concept:
http://hamchatforum.lefora.com/2009/11/13/hf-radio-propagation-and-su...
Here's a shorter one:
In order for signals to refract (be bent back toward the Earth) the
ionosphere needs ions. These are produced when UV radiation interacts
with the atmosphere. UV radiation comes from Sunspots.
- And nobody can figure out what causes the sunspots. Unknown.
Solar 'Activity' - idtars ~ RHF
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