Topband: Band noise level
Tom Rauch
W8JI@contesting.com
Fri, 28 Jan 2000 08:25:57 -0500
Hi John,
My daytime noise level is about S1-2, even on a TX vertical,
because I'm in a quiet rural location.
When the sun goes down and the band opens, noise increases as
much as 15-20 dB in some directions.
I attribute that to a random accumulation of many noise sources
that propagates in from the directions where the band is open.
Some days some directions are quieter than others, but as a
general rule pointing into a dark path that goes through a tropical
area results in much more noise than high latitude paths do here in
winter.
> The past few weeks I've noticed that the ambient noise level on the band
> at my QTH in MA seems to be quite high from the W/SW directions in the
> mornings before sunrise. It's 10 to 20 dB higher than in all other
> directions. The noise is a smooth hiss and has no fading or static
> crashing associated with it
Same basic thing I hear. If it is a random accumulation of hundreds
or thousands of sources, it would have no abrupt changes in level
or QSB.
73, Tom W8JI
w8ji@contesting.com
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