[South Florida DX Association] ARLP049 Propagation de K7RA

[Bill Marx]

> SB PROP ARL ARLP049
> ARLP049 Propagation de K7RA
> 
> This issue of the propagation bulletin is released on an irregular
> schedule because of the Thanksgiving holiday. ARLP048 was released
> two days early, but not late enough to include a full week of solar
> and geomagnetic data, so the numbers were the same as in ARLP047.
> 
> This bulletin has the updated numbers from November 16-22. This
> Friday, December 1, Propagation Forecast Bulletin ARLP050 will come
> out on the regular schedule with solar data from November 23-29.
> 
> As predicted, a solar wind stream activated geomagnetic indices over
> the weekend during the CW portion of the CQ Worldwide DX Contest.
> Conditions weren't bad though, just unsettled at higher latitudes.
> The mid-latitude A index for November 24-26 was only 10, 10 and 9,
> but the planetary A index was 21, 15 and 15 and the high-latitude
> college A index was 32, 21 and 17. A check of activity on
> http://dx.dxers.info/ over the weekend showed plenty of 10-meter
> reports, so perhaps there will be propagation for the ARRL 10 Meter
> Contest on December 9-10, even now toward the bottom of the sunspot
> cycle.
> 
> We saw three days of zero sunspots on November 22-24, but a new
> sunspot 926 appeared over the weekend. We should expect sunspot
> numbers above 12 over the next few days, with low geomagnetic
> activity. The U.S. Air Force predicts solar flux around 80 for the
> next 10 days, and a planetary A index around 5 until December 6.
> The next recurring coronal hole expected to push up the geomagnetic
> indicators should have maximum effect around December 7, a couple of
> days before the ARRL 10 Meter Contest.
> 
> Ken Kuzenski, AC4RD of Raleigh, North Carolina hasn't been on the
> air for the past few years, but a few weeks ago began using PSK31.
> He's been using it on 12 meters with 30 watts and a low horizontal
> loop. He wrote that a couple of weeks ago he was working a station
> in California around 2200-2300z on 12-meter PSK, and when the other
> station dropped out, he assumed the band was closing but then was
> called by a ZL station. He writes, "I didn't know to be surprised,
> not being familiar with the state of propagation lately."
> 
> Joe Wonoski, N1KHB of Guilford, Connecticut suggested a link in each
> issue of this bulletin to the propagation charts on the ARRL web
> site. "I like those charts as do many others, and though general as
> they are can still be a useful resource," said Joe. And so below, it
> now appears. Joe has a volunteer appointment in the ARRL Field
> Organization as a Technical Coordinator in the Connecticut Section.
> 
> If you would like to make a comment or have a tip for our readers,
> email the author at, k7ra at arrl.net.
> 
> For more information concerning radio propagation, see the ARRL
> Technical Information Service at,
> http://www.arrl.org/tis/info/propagation.html. For a detailed
> explanation of the numbers used in this bulletin see,
> http://www.arrl.org/tis/info/k9la-prop.html. An archive of past
> propagation bulletins is at, http://www.arrl.org/w1aw/prop/ .
> Monthly propagation charts between four USA regions and twelve
> overseas locations are at, http://www.arrl.org/qst/propcharts/.
> 
> Sunspot numbers for November 16 through 22 were 42, 38, 39, 38, 33,
> 11 and 0 with a mean of 28.7. 10.7 cm flux was 94.1, 89.5, 88.8,
> 84.9, 80.5, 77.5, and 76.5, with a mean of 84.5. Estimated planetary
> A indices were 8, 5, 2, 3, 2, 1 and 4 with a mean of 3.6. Estimated
> mid-latitude A indices were 5, 3, 0, 2, 1, 1 and 3, with a mean of
> 2.1.
> NNNN
> /EX
> 
>