SB PROP @ ARL $ARLP040
ARLP040 Propagation de K7RA
ZCZC AP40
QST de W1AW
Propagation Forecast Bulletin 40 ARLP040
From Tad Cook, K7RA
Seattle, WA October 4, 2019
To all radio amateurs
SB PROP ARL ARLP040
ARLP040 Propagation de K7RA
A new sunspot from old Solar Cycle 24 appeared on Tuesday and
Wednesday of this week, then by Thursday was gone.
The sunspot number was 11 on both days, the minimum non-zero sunspot
number.
Average daily solar flux rose only slightly from 67.3 to 67.6.
Geomagnetic indices were higher. Average planetary A index rose from
5.4 to 14.4, and average mid-latitude A index increased from 4.6 to
11.
Predicted solar flux for the next 45 days is 68 on every day,
October 4 through November 17.
Over the same period predicted planetary A index is 8 on October
4-5, 5 on October 6-7
...
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Четверг, 21.11.2024, 10:33
