SB PROP @ ARL $ARLP030
ARLP030 Propagation de K7RA
ZCZC AP30
QST de W1AW
Propagation Forecast Bulletin 30 ARLP030
From Tad Cook, K7RA
Seattle, WA July 28, 2017
To all radio amateurs
SB PROP ARL ARLP030
ARLP030 Propagation de K7RA
All of the indicators we track at the bottom of this bulletin fell
last week.
Because there were no sunspots in six of the seven days (July 20 to
26) last week, average daily sunspot number dropped from 26.6 to
1.7. Average daily solar flux declined from 85.9 to 69.7.
Average daily planetary A index declined from 13 to 11.9, while the
mid-latitude A index went the opposite direction, from 10.9 to 12.9.
The latest predicted solar flux (as of July 27) shows 68 on July 28
and 29, 72 and 76 on July 30 and 31, 80 on August 1 to 3, 82 on
August 4 to 11, 80 and 75 on August 12 and 13, 70 on August 14
...
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Воскресенье, 15.06.2025, 02:03
