WShoots1 wrote:

There are differing opinions on whether mountains have any significant
effect on MW or HF (shortwave) reception. The ground (soil) conditions may have
more influence than the terrain.

I cannot disagree with anything you wrote. G It's one of things that make a
regular search more meaningful. For starters, he should seek out that 50kw
Dallas station, WBAP on 820 kHz, mentioned in another thread. If that blow
torch can't be heard in Malibu at night, then the Rockies, if not the closer
mountains, will be the boundary for easterly stations.

Bill, K5BY

The mountains might be the geographical boundary but we shouldn't assume
they are the actual cause of MW signal attenuation from the west coast
at night. Long distance MW propagation at night is mainly via skywave
refraction from the ionosphere, just like shortwave. A range of
mountains is not going to interfere with what is taking place 50-miles
or more above them. This is not the case in the day when MW propagation
is primarily via groundwave. Then the mountains may well have an effect.
We have to consider the nature of the geology (particularly the soil)
west of the mountains and how this may affect MW propagation towards the
east at night.


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----