On Thu, 21 Aug 2003 19:35:31 -0600, JA
wrote:



Someone posted about solar max and min a bit ago. Someone else posted
about aurora borealis. The point I guess is that some natural phenomena
are messing up radio waves.

Duh? Shortwave propagation relies entirely on "natural phenomena"...
thass iss why reception varies by time (i.e. daylight/darkness at both
transmitter and receiver), by date (because of same variations), by
frequency (that's why broadcasters change frequency), by sunspot
cycle, by.... well, you get the picture. SW isn't the same as turning
on your AM-FM portable and getting the Local Station at Perfect
Levels.