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Watch this amazing explosion on the Sun. From sunspot complex 1226-1227 comes an X-ray Flare peaking at a magnitude of M2.5 at 0640 UTC on 7 June, 2011.

Source: https://www.youtube.com/watch?v=KQMrRu8BWDo

This X-ray flare hurled a massive coronal mass ejection (CME) toward the Earth. This not-squarely Earth-directed CME is moving at 1400 km/s according to NASA models. The CME did not deliver even a noticeable glancing blow to Earth’s magnetic field late June 8th or June 9th.

What can be seen clearly in this movie is one of the most spectacular prominence eruptions ever observed. In fact, one could call it a “prominence explosion”. The prominence material expanded to a volume some 75 times as big across as the earth!

This X-ray flare also triggered an S1-level solar radiation storm, causing a long-lasting polar cap absorption (PCA) event. A polar cap absorption (PCA) event affects the propagation of a shortwave radio signal as it makes its way over the polar regions. In short, radio communications on lower shortwave radio frequencies become more difficult, as those radio signals are absorbed by the ionosphere (in the D-region) over the polar regions.

What does this mean in real-world communications? Trans-polar airline pilots may find it more difficult to communicate with regional air traffic control, shortwave radio listeners who want to hear a broadcast from a country by receiving a transmission from a country by way of a transmission beamed over the pole (like, from Europe into the USA via the North Pole), or other such communications, will find those signals all but gone. The stronger the PCA event, the higher the frequencies absorbed over the polar regions, with the greatest absorption occurring at the lower frequencies.

This movie spans the period of time from 0300 UTC through 1556 UTC, and is composed of the 171-Angstrom, 304-Angstrom, and 335-Angstrom wavelength views as captured by the filters of the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA). In this movie, the AIA instruments capture the Sun’s extreme ultraviolet light and reveal a very large eruption of cool gas. It is somewhat unique because at many places in the eruption there seems to be even cooler material–at temperatures less than 80,000 K.

The following is a linked video that is part of this event: http://www.youtube.com/watch?v=L4CsjcUGoaw

Watch as we zoom out to see a total view of the June 7, 2011 moderately-powerful X-ray Flare and Prominence Eruption. This movie will give you a full perspective of the immense size of this prominence eruption as it spews out away from the Sun.

The X-ray Flare peaked at a moderate magnitude of M2.5 at 0640 UTC, but unleashed a huge prominence eruption. The massive cloud of plasma was ejected out into interplanetary space, but missed the Earth. This movie stars with a “close-up” view by the Solar Dynamics Observatory at a combined wavelength view at 94 and 304 Angstroms. Then, the movie views the event further back through the eyes of the COR1 spacecraft (with the SDO AIA 304 image superimposed in the middle). Next, we zoom out to the COR2 spacecraft and superimpose the COR1 and SDO views. Then, we zoom further back to the H1 view… and finally look again at the event close-up.

More info: http://sunspotwatch.com/

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Source: SDO AIA NASA SOHO

Hello, folks! We're happy to say that Pete has rejoined our crew for this episode of the show, and he brings with him some excellent information for all you listeners out there. We take a look at several great video and audio resources for amateur radio adventures this fortnight. On top of that, we give a detailed description of YFKtest in action during a contest, and an overview and introduction to the latest version of the Tucnak logger. Lots more news, reviews and excitement as well. Please enjoy!

73 de The LHS Guys

I keep waiting on the mythical Universal Digital Radio…

Despite the long wait, development seems to be ongoing and very interesting things are in the pipeline from NW Digital Radio. This interview with John Hays, K7VE begins at 48:50.

Filed under: Ham Radio Tagged: digital, udrx, video

Phil Karn, KA9Q is an Internet pioneer with his name on at least six RFC‘s. Best known in the world of amateur radio for his KA9Q NOS as well as numerous AMSAT satellite communications projects.

Retired from Qualcomm, Karn seems to be staying busy with other interesting projects — like this one.

Phil Karn on the reboot of the 1978 International Sun/Earth Explorer-3 (ISEE-3)/ (International Cometary Explorer) from InterWorking Labs on Vimeo.

Filed under: Ham Radio Tagged: amsat, ka9q, satellite, space, video

A new video (quite well done) that you may want to keep on hand for showing to those who have or are expressing a deisre to become an Radio Amateur.

First, here’s the link to the full version (which is a bit longer than what is embedded here):  http://youtu.be/ivUMIADFSDw

Next, from Jim W4QO considering the current “Buddies in the Caribbean” DXpedition to St. Lucia:

In order to step up the pace here in St. Lucia, if you (running QRP @5 cw/dig or 10 PEP SSB) work 3 of the 7 ops on the Buddies in the Caribbean DXpediton this week, you can earn the coveted BIC QRP certificate.  It’s not the Buddies who have to be running QRP – it’s YOU!  Many of us are running QRP
but some are not.

http://dx-world.net/2013/st-lucia-buddies-in-the-caribbean-dxpedition/

Sadly, Joe didn’t make it so you only have to work 3 of the other 7 using QRP to earn this valuable certificate.

We have worked many of you QRPers already so how hard can it be?  Find 3 of us on any band, any mode.

To find us, go to this easy link:

http://www.dxwatch.com/dxsd1/dxsd1.php?f=3647

The Buddies are the ones with a J6/ in front of their calls. There are still 3.5 more days to do this, so come on, work us!

Send a #10 envelope with SASE to W4QO at qrparci.org with a list of the 3 (or more) you worked.  If you work 5 or more, well, just wait and see what you get!!  🙂

If you worked J6/W4QO, then include your QSL card and get one in return.

73,

Budd, J68FF #6260
Chris, J6/W6HFP #15226
Rick, J6/AA4W #4046
Craig, J6/NM4T #8137
Jim, J6/W4QO #6515
John, J6/W5EXJ #15219
Jerry, J6/N9AW #6694

Lastly, I thought this announcement from the League regarding the Communications Act of 1934 was of interest:

SB QST @ ARL $ARLB033
ARLB033 Plans Announced to Update the Communications Act of 1934

ZCZC AG33
QST de W1AW
ARRL Bulletin 33  ARLB033
From ARRL Headquarters
Newington CT  December 5, 2013
To all radio amateurs

SB QST ARL ARLB033
ARLB033 Plans Announced to Update the Communications Act of 1934

The US House Communications and Technology Subcommittee has announced plans for a multi-year effort to examine and update the Communications Act of 1934, the overarching law under which the FCC functions. The subcommittee, part of the US House Energy and Commerce Committee, is chaired by Oregon Republican Greg Walden, W7EQI. Walden and Energy and Commerce Committee Chair Fred Upton of Michigan made the announcement December 3.

“Today we are launching a multi-year effort to examine our nation’s communications laws and update them for the Internet era,” Upton said in a news release. “The United States has been the global leader in innovation and growth of the Internet, but unfortunately, our communications laws have failed to keep pace.”

ARRL CEO David Sumner, K1ZZ, noted that the most recent significant update of the Communications Act was in 1996. “Under the leadership of Greg Walden, the subcommittee and its staff are well equipped to take up the challenge,” Sumner said. “The ARRL will be monitoring the work closely as it goes forward next year and beyond.”

The plan was made public via Google Hangout, where the committee leaders were joined by former FCC Commissioner Robert McDowell, who said he was “delighted” to learn of the update plans. Upton explained that the process, to start in 2014, will involve a series of white papers and hearings focusing on what might be done “to improve the laws surrounding the communications marketplace as well as a robust conversation utilizing all platforms of digital media.” He suggested a bill would be ready by 2015.

Walden said, “A lot has happened since the last update” and that the Communications Act is “now painfully out of date.” He pointed out that the Act, drafted during the Great Depression, was last updated “when 56 kilobits per second via dial-up modem was state of the art.”

Upton said, “We must ensure that our laws make sense for today but are also ready for the innovations of tomorrow.”

Walden said he wants to open the discussion to input from everyone. Interested parties may follow the plan’s progress via Twitter. “It’s important for people to have an opportunity to weigh in,” he said. “This is really a public process to get better public policy.”

Call me a pessimist, but I hope we’re not opening Pandora’s Box here.

72 de Larry W2LJ
QRP – When you care to send the very least!

And from the looks of this video, Mt. Herman in Colorado is as beautiful as ever!

The weather has been phenomenal this winter, as you all know.  Due to Arctic air staying way up north, we’ve had one of the warmer Winters that we’ve had in a while.  Who would’ve thought last Halloween, when we had that early snow, that Winter was going to turn out the way it did?

The early warmth and early blooming and budding is playing havoc with my head, though.  My nose is all stopped up and my eyes are itchy and watery.  Allergies are no fun; but this too shall pass.

So when my friend Rem K6BBQ posted about another video from last year, it’s gotten me all torqued up for portable operating for this coming Spring and Summer outdoor operating season.  Shorts and T-shirt weather may not be immediately imminent; but I dare say it’s closer than father away!

72 de Larry W2LJ
QRP – When you care to send the very least!