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enigma685

Posts: 1,325 Member Since:12/07/08

#41 [url]

Sep 28 11 9:26 PM

Strong solar activity continues

New sunspot 1302 is crackling with strong solar flares.
This morning it unleashed an X2-class flare - its second X-flare in two days - quickly followed by an M7-class eruption.
So far the blasts have not been Earth-directed, but this could change in the days ahead as the sunspot turns toward our planet.
The sunspot is growing and there is no sign that it will quiet down soon.
Visit http://spaceweather.com for movies and updates.

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enigma685

Posts: 1,325 Member Since:12/07/08

#43 [url]

Feb 4 12 5:45 PM

Propagation de K7RA

4 February, 2012
ARLP005

Here are some yearly averages this bulletin neglected at the beginning of the year. These are the average daily sunspot numbers for whole calendar years, from 1994-2011: 48.1, 28.7, 13.2, 30.7, 88.7, 136.3, 173, 170.3, 176.7, 109.2, 68.6, 48.9, 26.1, 12.8, 4.7, 5.1, 25.5, and 29.9...
http://www.southgatearc.org/propagation/2012/k7ra/february_04.htm

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w8eeo

Posts: 2,219 Member Since:10/04/08

#48 [url]

Mar 7 12 10:58 PM

Strong Solar Activity

Space Weather reports on the big sunspot AR1429 and a video from DH7FB shows a 144 MHz recording of a flare produced by the sunspot.
Solar activity is now high. Big sunspot AR1429, which emerged on March 2nd, is crackling with strong flares. The strongest so far, an X1-class eruption, occured Monday, March 5th at 0413 UT. The explosion also hurled a bright coronal mass ejection (CME) into space. The expanding cloud will probably deliver a glancing blow to Earth's magnetic field on March 6th or 7th. High-latitude sky watchers should be alert for auroras in the nights ahead.
This video presents an on air recording by amateur radio station Frank DH7FB with his 144 MHz EME array pointed towards the Sun. During the recording, Sunspot 1429 produced a long duration M2.0 solar flare and this is what he recorded. At 8 seconds into the on air recording, you can hear a sharp increase in background noise level which continues for a while until eventually returning to quieter levels. Thanks to DH7FB for providing this recording.
Watch The Radio Sun - M2.0 Solar Flare 144mhz Recording (3/4/2012)

Space Weather
htp://www.spaceweather.com/
http://www.youtube.com/watch?feature=player_embedded&v=yJ7Rl81xLAo#t=0s

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sispy

Posts: 1,579 Member Since:11/05/08

#50 [url]

Mar 8 12 2:47 PM

Another Major Flare

Big sunspot AR1429 has unleashed another major flare--an X5-class eruption on March 7th at 00:28 UT.
As a result of the blast, a radiation storm is underway and a CME will likely hit Earth's magnetic field in a day or so.
Geomagnetic storms are already in progress at high latitudes due to earlier eruptions from the active sunspot.
Last night, auroras were spotted over several northern-tier US states including Michigan and Wisconsin.
Check http://spaceweather.com for updates and images.

For the latest information about Ham Radio, Communications, Radio News, Space, Radio History...Join me in the discussion at hamchatforum.lefora.com

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sispy

Posts: 1,579 Member Since:11/05/08

#51 [url]

Mar 11 12 1:14 AM

Propagation de K7RA

10 March, 2012
ARLP010

This has been quite a week for dramatic solar activity. The average daily sunspot number was up nearly 26 points to 69.4, and average daily solar flux rose nearly 17 points to 121.9 for the period March 1-7...
http://www.southgatearc.org/propagation/2012/k7ra/march_10.htm

For the latest information about Ham Radio, Communications, Radio News, Space, Radio History...Join me in the discussion at hamchatforum.lefora.com

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sispy

Posts: 1,579 Member Since:11/05/08

#52 [url]

Mar 11 12 1:16 AM

Another CME Heads for Earth

As Earth's magnetic field reverberates from the impact of one CME on March 8th, a second CME is on the way.
Big sunspot AR1429 unleashed an M6-class solar flare and the eruption hurled a cloud of plasma almost directly toward Earth.
Forecasters say the CME could reach our planet during the late hours of March 10th or early hours of March 11th. Strong geomagnetic storms are possible when the cloud arrives.
Check http://spaceweather.com for more information and updates.

For the latest information about Ham Radio, Communications, Radio News, Space, Radio History...Join me in the discussion at hamchatforum.lefora.com

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w8eeo

Posts: 2,219 Member Since:10/04/08

#53 [url]

Mar 14 12 9:49 PM

Incoming CME

Sunspot AR1429 unleashed another strong flare (category M7.9) on March 13th.
The explosion produced a significant coronal mass ejection (CME), which forecasters say should reach Earth on March 15th.
Geomagnetic storms are possible when the cloud arrives.
Check http://spaceweather.com for updates.

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w8eeo

Posts: 2,219 Member Since:10/04/08

#55 [url]

Mar 18 12 11:52 PM

Propagation Report from Hannes Coetzee, ZS6BZP

18 March, 2012
Hannes Coetzee, ZS6BZP, reports that the Solar activity is dropping off now that huge sunspot 1 429 has rotated out of view of the Earth. It sure was fun while it lasted.
If you want to do your own frequency predictions the expected effective sunspot number for the week will be around 57.
All the bands from 20 to 10m will provide lots of DX fun with even some 6m openings possible.

Please visit www.spaceweather.co.za for further information.
South African Radio League
All propagation reports can be found at:
http://www.southgatearc.org/propagation

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sispy

Posts: 1,579 Member Since:11/05/08

#56 [url]

Mar 24 12 11:34 PM

Propagation de K7RA

17 March, 2012
ARLP012

Solar activity declined this week. Average daily sunspot numbers were off by over 13 points to 75.1, and average daily solar flux dropped over 32 points to 102.1...
http://www.southgatearc.org/propagation/2012/k7ra/march_24.htm

For the latest information about Ham Radio, Communications, Radio News, Space, Radio History...Join me in the discussion at hamchatforum.lefora.com

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zekecarr

Posts: 158 Member Since:07/04/09

#57 [url]

Mar 25 12 9:46 PM

Propagation Report from Hannes Coetzee, ZS6BZP

25 March, 2012
Hannes Coetzee, ZS6BZP, reports that the Solar activity is dropping off now that huge sunspot 1 429 has rotated out of view of the Earth. It sure was fun while it lasted.
If you want to do your own frequency predictions the expected effective sunspot number for the week will be around 57.
All the bands from 20 to 10m will provide lots of DX fun with even some 6m openings possible.

Please visit www.spaceweather.co.za for further information.
South African Radio League
All propagation reports can be found at:
http://www.southgatearc.org/propagation

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zekecarr

Posts: 158 Member Since:07/04/09

#58 [url]

Mar 30 12 11:56 PM

The return of active sunspot AR1429

Sunspot AR1429, the source of many strong flares and geomagnetic storms earlier this month, is about to re-appear following a two-week trip around the backside of the sun.
Although the sunspot has probably decayed since its heyday, there are signs that it might still be a potent source of solar activity.
Check http://spaceweather.com for images and updates as AR1429 rotates into view during the next ~24 hours.

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enigma685

Posts: 1,325 Member Since:12/07/08

#59 [url]

Mar 31 12 8:22 AM

End of the Grand Solar Maximum

Luke Barnard of the University of Reading says the recent decline in the open magnetic flux of the Sun heralds the end of the Grand Solar Maximum (GSM) that has persisted throughout the space age.
Isotopes in ice sheets and tree rings tell us that this grand solar maximum is one of 24 during the last 9300 years and suggest the high levels of solar magnetic field seen over the space age will reduce in future. This decline will cause a reduction in sunspot numbers and explosive solar events, but those events that do take place could be more damaging.
Luke Barnard presented his paper at the National Astronomy Meeting NAM2012 held at the University of Manchester March 27-30.
Read Luke's paper 'Predicting space climate change' at
http://www.agu.org/pubs/current/si/links/2011GL048489.pdf
Royal Astronomical Society press release
Solar 'climate change' could cause rougher space weather
http://www.jodrellbank.manchester.ac.uk/meetings/nam2012/
pressreleases/nam12.html

Read the Daily Mail newspaper article
'Climate change' in the sun could leave Earth at the mercy of violent solar storms and cosmic ray blasts
http://www.dailymail.co.uk/sciencetech/article-2121707/Climate-change
-sun-lead-worse-solar-storms-40-years--aircraft-built-cope.html

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zekecarr

Posts: 158 Member Since:07/04/09

#60 [url]

Apr 2 12 9:44 PM

NZ4O MF (300-3000 KC) Radiowave Propagation Forecast

The NZ4O MF (300-3000 KC) Radiowave Propagation Forecast #2012-14 has been published at 0000 UTC on Friday March 30, 2012, valid 0000 UTC Saturday March 31, 2012 through 2359 UTC Friday April 06, 2012.
http://www.mwfrequencypropagation.org .
73 & GUD DX,
Thomas F. Giella, NZ4O
Lakeland, FL, USA
thomasfgiella@tampabay.rr.com

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