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 20, 2019
To all radio amateurs 

SB PROP ARL ARLP051
ARLP051 Propagation de K7RA

Still no sunspots, and it's been the same for 37 consecutive days.

Geomagnetic conditions remained quiet, until "a minor stream of
solar wind" (according to Spaceweather.com) hit us on December 18.
This drove the planetary A index to 13 from the low single digit
values earlier in the week.

Average planetary A index for December 12-18 rose to 4.6, from 3.7
over the previous 7 days, while mid-latitude A index increased from
1.9 to 4.

Predicted solar flux over the next 45 days is 70, and we've seen
this same daily 45-day flux forecast since December 2. December 1
wa
		
		... 
		
			Читать дальше »