SB PROP @ ARL $ARLP008
ARLP008 Propagation de K7RA
ZCZC AP08
QST de W1AW
Propagation Forecast Bulletin 8 ARLP008
From Tad Cook, K7RA
Seattle, WA February 22, 2019
To all radio amateurs
SB PROP ARL ARLP008
ARLP008 Propagation de K7RA
No sunspots are visible since January 30. The lack of sunspot
activity has persisted for over 3 weeks, as of February 21.
This past week (February 14 to 20) the average daily solar flux was
only marginally higher, rising just barely from 70.4 to 70.6.
Geomagnetic indicators were lower, with average daily planetary A
index declining from 8.1 to 4.9, and average daily mid-latitude A
index (measured at a single magnetometer in Virginia) dropping from
6.1 to 3.9.
One advantage at the bottom of the solar cycle is there is less
geomagnetic activity, which is a benefit for propagation on
...
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Четверг, 18.09.2025, 10:25
