[South Florida DX Association] ARLP014 Propagation de K7RA

[bmarx@bellsouth.net]

 SB PROP ARL ARLP014
> ARLP014 Propagation de K7RA
> 
> The third week of spring begins this weekend.  HF conditions have
> been good, with moderate geomagnetic conditions prevailing.  Average
> daily sunspot numbers for the past week, March 25-31 were up when
> compared to the previous week, over 31 points to 123.9.  Average
> daily solar flux rose 11 points.
> 
> On March 29, the sun showed several spots pointed earthward,
> including one large spot, 582.  The sunspot number on that day was
> 169, the highest since November 30, when it was 178.  Geomagnetic
> conditions weren't bad on March 29, with the planetary A index at 12
> and mid-latitude A index at 9.
> 
> Any doubts that the overall decline of this solar cycle is well
> underway are dashed when examining some recent short-term averages.
> The first quarter of 2004 just ended, and average solar flux and
> sunspot numbers for the period are down.  From the third quarter of
> 2002 through the first quarter of 2004, the average daily sunspot
> numbers were 193.5, 152.7, 120.3, 107.3, 110.2, 99.2 and 72.9.
> Average daily solar flux values for the same seven quarters were
> 178.1, 164.2, 134.3, 124.2, 120.8, 137.4 and 111.1.
> 
> Scott Craig has a minor bug fix for his Solar Data Plotting Utility.
> He fixed the leap year problem, and the program contains a data file
> updated through March 3.  Download version 3.13 at
> http://www.craigcentral.com/sol.asp.
> 
> Over the next five days solar flux values should stay between
> 110-115.  The planetary A index for April 2-6 is predicted to be 8,
> 8, 20, 20 and 35.  The predicted rise in geomagnetic activity is
> because of a possible solar wind for Sunday, April 4.  Today, April
> 2, there is a slight chance of the earth's magnetic field being hit
> by a coronal mass ejection.
> 
> This weekend is the Montana QSO Party.  Here are some times when 40,
> 20, 15 and 10 meters may be open to Montana from various locations.
> The Montana end of the path in these calculations is in the western
> part of the state, roughly centered on Helena.
> 
> From Japan, 40 meters 0900-1400z, 20 meters 0600-0800 and
> 1400-1700z, 15 meters 2030-0430z and 10 meters possibly around
> 2100-0400z.
> 
> From Australia, 40 meters 0900-1430z, 20 meters 0800-1500z, 15
> meters 1530-1730 and 0500-0730z and 10 meters 2130-0300z.
> 
> From New Zealand, 40 meters 0600-1400z, 20 meters 0430-1530z, 15
> meters 0300-0700z and 10 meters 2000-0230z.
> 
> From Hawaii, 40 meters 0330-1500z, 20 meters open 24 hours, with
> weakest signals 1000-1300 and 1900-2330z and strongest signals
> 0500-0800 and 1500-1830z.  Check 15 meters 1630-0530z and 10 meters
> 2000-2300z.
> 
> From Dallas, Texas, 40 meters open 24 hours with best signals
> 0200-1200z and weakest signals 1700-2100z.  20 meters should open
> 1230-0600z, with signals stronger later in the period.  15 meters
> should open 1530-0130z, with best bet around 1800-2230z.  10 meters
> might possibly open 1700-2200z.
> 
> From Atlanta, Georgia, 40 meters 2230-1430z, with strongest signals
> 0200-1130z.  Check 20 meters 1130-0630z, with signals stronger later
> in the period.  15 meters 1400-0400z, 10 meters 1700-2230z, with
> best chance around 2000-2100z.
> 
> From Montreal, Quebec, 40 meters 2300-1330z, strongest 0200-1030z.
> 20 meters 1200-0600z, stronger later in the period.  15 meters
> 1530-0200z, best bet around 1830-0000z.  10 meters might possibly
> open 1500-0100z.
> 
> From Germany, 40 meters 0100-0630z, strongest 0200-0530z.  Check 20
> meters 2100-0000z and 1830-2100z.  15 meters 1830-2100z, possible 10
> meter opening 1700-2100z.
> 
> From Brazil, 40 meters 0130-1000z, 20 meters 2330-0800z and again
> around 1130z, 15 meters 1300-0430z, weakest 1500-2000z.  10 meters
> looks good 1630-2300z.
> 
> From Cuba, 40 meters 0100-1200z, 20 meters 1300-0530z (weakest
> 1600-2030z), 15 meters 1700-0000z and possible 10 meter opening
> 1800-2030z.
> 
> For more information concerning propagation and an explanation of
> the numbers used in this bulletin see the Propagation page on the
> ARRL Web site at http://www.arrl.org/tis/info/propagation.html.
> 
> Sunspot numbers for March 25 through 31 were 128, 100, 129, 125,
> 169, 121 and 95 with a mean of 123.9.  10.7 cm flux was 127, 123.8,
> 127.6, 129, 128.6, 126.7 and 121.2, with a mean of 126.3.  Estimated
> planetary A indices were 8, 11, 14, 17, 12, 12 and 7, with a mean of
> 11.6.
> NNNN
> /EX
> 
>