By David, on September 17th, 2010%
SB PROP @ ARL $ARLP037 ARLP037 Propagation de K7RA
ZCZC AP37 QST de W1AW Propagation Forecast Bulletin 37 ARLP037 >From Tad Cook, K7RA Seattle, WA September 17, 2010 To all radio amateurs
SB PROP ARL ARLP037 ARLP037 Propagation de K7RA
Average daily sunspot numbers this week dropped nearly 23 points to 15.6, and geomagnetic indices were quiet. The average daily solar flux was 78.1, but the latest prediction from USAF and NOAA is for rising solar flux values. The September 17-23 projection has solar flux values at 85, 85, 86, 86, 86, 87, and 88, which is well above last week’s average. Solar flux hasn’t been to 88 . . .
To read the rest of this article, please click here: → Propagation Report September 17, 2010
By David, on September 10th, 2010%
SB PROP @ ARL $ARLP036 ARLP036 Propagation de K7RA
ZCZC AP36 QST de W1AW Propagation Forecast Bulletin 36 ARLP036 >From Tad Cook, K7RA Seattle, WA September 10, 2010 To all radio amateurs
SB PROP ARL ARLP036 ARLP036 Propagation de K7RA
Average daily sunspot numbers for the week rose nearly 13 points to 38.3, and average daily solar flux was up over four points at 78.4. On September 2 one new sunspot group emerged, numbered 1105. It joined sunspot groups 1101, 1102 and 1103. On September 4, group 1102 faded away, then 1101 and 1103 vanished on September 6. 1105 went over the western side of the Sun by . . .
To read the rest of this article, please click here: → Propagation Report September 10, 2010
By David, on September 3rd, 2010%
SB PROP @ ARL $ARLP035 ARLP035 Propagation de K7RA
ZCZC AP35 QST de W1AW Propagation Forecast Bulletin 35 ARLP035 >From Tad Cook, K7RA Seattle, WA September 3, 2010 To all radio amateurs
SB PROP ARL ARLP035 ARLP035 Propagation de K7RA
Over this past week four new sunspot groups appeared. Group 1101 was already in place since August 24, and 1102 emerged on August 29. On September 1 both new sunspot groups 1103 and 1104 appeared, and on September 2 sunspot group 1105 arrived. Over August 26 to September 2 the daily sunspot numbers were 23, 11, 11, 25, 28, 27, 51, and 52 and over those same eight . . .
To read the rest of this article, please click here: → Propagation Report September 3, 2010
By David, on August 27th, 2010%
SB PROP @ ARL $ARLP034 ARLP034 Propagation de K7RA
ZCZC AP34 QST de W1AW Propagation Forecast Bulletin 34 ARLP034 >From Tad Cook, K7RA Seattle, WA August 27, 2010 To all radio amateurs
SB PROP ARL ARLP034 ARLP034 Propagation de K7RA
As I was writing the bulletin overnight my desktop PC was hit by a drive-by virus that downloaded itself automatically when viewing sunspot images on an infected website. Unable to remove the malware by morning, the bulletin was rewritten on another PC, and some of the topics that were planned had to be skipped for now. The image was of a large sunspot in sunspot group 1084, from . . .
To read the rest of this article, please click here: → Propagation Report August 27, 2010
By David, on August 14th, 2010%
SB PROP @ ARL $ARLP032 ARLP032 Propagation de NW7US
ZCZC AP32 QST de W1AW Propagation Forecast Bulletin 32 ARLP032 From Tomas Hood, NW7US Stevensville, MT August 13, 2010 To all radio amateurs
SB PROP ARL ARLP032 ARLP032 Propagation de NW7US
This week’s bulletin was written by Tomas Hood, NW7US. Tomas is filling in for your regular reporter Tad Cook, K7RA.
Sunspot numbers and solar flux increased this week, with average daily sunspot numbers up over 32 points to 53, and the average daily 10.7-cm solar flux up over 3 points to 84.5. These are the numbers from last Thursday through this Wednesday, August 5 through August 11.
The . . .
To read the rest of this article, please click here: → Propagation Report August 13, 2010
|
|
NASA Real-Time Solar Image
|
