SB PROP @ ARL $ARLP051
ARLP051 Propagation de K7RA
ZCZC AP51
QST de W1AW
Propagation Forecast Bulletin 51 ARLP051
From Tad Cook, K7RA
Seattle, WA December 21, 2018
To all radio amateurs
SB PROP ARL ARLP051
ARLP051 Propagation de K7RA
On Wednesday, December 19 Spaceweather.com displayed this headline:
"Solar minimum conditions are in effect," followed by "The Sun has
been without sunspots for 209 days in 2018--that is, 59% of the
time. To find a similar stretch of blank Suns, you have to go back
to 2009 when the Sun was experiencing the deepest solar minimum in a
century."
Looking at my own records, I show the average daily sunspot number
for all of 2009 was 5.05, and average daily solar flux was 70.6.
Looking at the past two months (October 19 through December 19) the
same values were 3.6 an
...
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Среда, 23.07.2025, 05:21
