Topband: FW: wwv
kd9sv at comcast.net
Mon Nov 6 20:16:37 EST 2006
I had inquired as to what the "R" in the WWV report was and never got an
answer so I asked K9LA and this was his reply:
From: Carl K9LA [mailto:k9la at gte.net]
Sent: Monday, November 06, 2006 6:59 PM
To: Gary Nichols
Subject: Re: wwv
what exactly does the "R" number in the 3-hourly wwv report mean? I am
assuming an R of 62 is not a good thing when it is normally zero.de gary
There are two "Rs" in propagation reports.
The first use of R is tied to disturbances to propagation. This R is on a
scale of 1 to 5, and is related to big solar flares causing blackouts on the
sunlit side of the Earth. 1 is good and 5 is bad.
The second use of R is the daily sunspot number. Your question about R = 62
was this use of R. The use of R for sunspot number comes from R12, which is
the smoothed sunspot number (long term average).
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