To realize this Bullettin Sixitalia use news (except when clearly indicate) extract by (in alphabetic order): 425dxn, 50 MHz DX News by OZ6OM, ARRL DX bullettin, Dxcoffe, DXNL, www.dx-world.net, ICPO, MMMonVHF, OPDX, www.rudius.net & 70mhz.org.
SB PROP @ ARL $ARLP038
ARLP038 Propagation de K7RA
ZCZC AP38
QST de W1AW
Propagation Forecast Bulletin 38 ARLP038
From Tad Cook, K7RA
Seattle, WA September 21, 2018
To all radio amateurs
SB PROP ARL ARLP038
ARLP038 Propagation de K7RA
Sunspots are gone again this week, with none observed since
September 12.
Average daily sunspot number declined to zero this week from 7.6
last week. Average daily solar flux was unchanged at 68.6. Average
daily planetary A index declined from 12.6 to 9.7, while average
daily mid-latitude A index went from 10 to 8.3.
The Autumnal equinox is this weekend, at 0154 UTC on Sunday,
September 23, 2018. The weeks before and after the equinox are
typically a better period for worldwide HF propagation because both
the Northern and Southern Hemispheres are seeing an equal amount of
solar radiation.
For some reason the space weather squadron at
... Читать дальше »
Суббота, 14.06.2025, 07:06
SB PROP @ ARL $ARLP038
ARLP038 Propagation de K7RA
ZCZC AP38
QST de W1AW
Propagation Forecast Bulletin 38 ARLP038
From Tad Cook, K7RA
Seattle, WA September 21, 2018
To all radio amateurs
SB PROP ARL ARLP038
ARLP038 Propagation de K7RA
Sunspots are gone again this week, with none observed since
September 12.
Average daily sunspot number declined to zero this week from 7.6
last week. Average daily solar flux was unchanged at 68.6. Average
daily planetary A index declined from 12.6 to 9.7, while average
daily mid-latitude A index went from 10 to 8.3.
The Autumnal equinox is this weekend, at 0154 UTC on Sunday,
September 23, 2018. The weeks before and after the equinox are
typically a better period for worldwide HF propagation because both
the Northern and Southern Hemispheres are seeing an equal amount of
solar radiation.
For some reason the space weather squadron at
