[South Florida DX Association] ARLP026 Propagation de K7RA

[Bill Marx]

SB PROP ARL ARLP026
> ARLP026 Propagation de K7RA
> 
> It was a fun Field Day weekend all over last week, judging from the
> Soapbox comments and photos on the ARRL web site at
> http://www.arrl.org/contests/soapbox/.  There are many great stories
> on the site, but I enjoyed reading the N4SL report on the W7MRG
> operation over 500 miles down the road to Montana from home in
> Washington State.  Go to page 10 (click on 10 at the bottom of the
> page on the above link) to find it.  Even with zero sunspots, the
> homebrew wire antenna arrays and Montana hilltop sounded fabulous.
> If you check the N4SL listing on www.qrz.com, you'll see his wire
> antennas at home sound quite similar to his Field Day setup.
> 
> Apparently there was some 6, 10 and 15 meter fun, although your
> author didn't hear it here.  We put in a short casual mobile
> operation on 20 and 40 meters, both CW and SSB, and were impressed
> with how well the 7 foot monoband whip on the car worked on 40
> meters.  Changing bands meant unscrewing an antenna from the trunk
> mount and substituting another.
> 
> No sunspots last weekend, but a big new spot (897) rotated into view
> this week.  Followed by spot 898, it looks like a moderately rising
> solar flux and sunspot number will be with us through July 6.  A
> solar wind stream caused elevated geomagnetic numbers on June 28 and
> 29, and this may happen again around July 3-5.  Geophysical
> Institute Prague predicts quiet conditions over June 30 to July 3,
> quiet to unsettled on July 4, unsettled to active on July 5, and
> unsettled on July 6.
> 
> Last week's bulletin mentioned Carl Luetzelschwab, K9LA and his
> article ''When Will the Bands Improve?'' in the current July 2006 QST.
> Carl would like to correct his definition of the length of a sunspot
> cycle.  The sentence in question should read ''The average length of
> a sunspot cycle, from solar minimum with a minimum number of
> sunspots (low electron density) to solar maximum with a maximum
> number of sunspots (high electron density) and then back down to the
> next solar minimum, is approximately eleven years.''
> 
> Roger Lapthorn, G3XBM wrote: ''I echo the comments last week about 6m
> being a bundle of fun. I only have 5-10W QRP to a small vertical on
> the side of the house but this has allowed me to work all across
> Europe as far as Ukraine on SSB with 59 reports being the norm. Last
> summer I managed a few north Africans but not yet this summer''.
> 
> ''Not within my reach has been the amazing DX worked from Europe by
> the 'big guns' running high power to large beams: Central America,
> North America and, most amazing of all, a number of openings to JA
> and even one to KL7. JAs seem to have been worked on several
> mornings of late around our late breakfast time. This is over the
> pole and a very long way for simply sporadic-E. I wonder what mode
> this really is?''
> 
> Roger has a very nice web page at
> http://homepage.ntlworld.com/lapthorn/index.htm.  Don't miss the
> interesting links he has under Homebrew rigs for the remarkable
> little QRP radios he constructed.
> 
> 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/ .
> 
> Sunspot numbers for June 22 through 28 were 0, 0, 0, 13, 14, 33 and
> 38 with a mean of 14. 10.7 cm flux was 72.1, 71.8, 73.6, 74, 76.4,
> 78.5, and 83.5, with a mean of 75.7. Estimated planetary A indices
> were 6, 2, 4, 5, 3, 6 and 18 with a mean of 6.3. Estimated
> mid-latitude A indices were 6, 1, 2, 3, 1, 7 and 12, with a mean of
> 4.6.
> NNNN
> /EX
>