[IRCA] Fw: ARLP017 Propagation de K7RA

["Art Blair" <artngwen@xxxxxxxxxx>]

----- Original Message ----- 
From: "W1AW Mailing List" <w1aw-list-request@xxxxxxxxxxxxxxxxx>
To: <artngwen@xxxxxxxxxx>
Cc: <W1AW List:>
Sent: Friday, April 20, 2007 2:05 PM
Subject: ARLP017 Propagation de K7RA


> SB PROP @ ARL $ARLP017
> ARLP017 Propagation de K7RA
> 
> ZCZC AP17
> QST de W1AW  
> Propagation Forecast Bulletin 17  ARLP017
>>From Tad Cook, K7RA
> Seattle, WA  April 20, 2007
> To all radio amateurs 
> 
> SB PROP ARL ARLP017
> ARLP017 Propagation de K7RA
> 
> This week we are on the road in Boise, Idaho.
> 
> This was another week with little or no sunspots. Most days had 0
> spots, but from time to time a new sunspot will appear, but only
> briefly. If you go to the table of sunspot readings at,
> http://www.sec.noaa.gov/ftpdir/indices/DSD.txt you can see the brief
> interruptions in the string of no-sunspot days. Go to
> http://www.spaceweather.com and in the upper right corner you can
> dial back to see Sun pictures and reports from any day. For
> instance, there was a brief sunspot appearance on April 14, and if
> you go back to the April 15 issue of Spaceweather.com, it notes the
> brief appearance.
> 
> Expect more of the same conditions, with little or no sunspots.
> Eventually this year we should reach a point when the only place for
> solar activity to go is up.
> 
> Today, April 20, we may see unsettled geomagnetic activity.
> Geophysical Institute Prague expects unsettled to active geomagnetic
> conditions for April 20, unsettled for April 21-22, quiet to
> unsettled on April 23, and quiet April 24-26. The U.S. Air Force
> predicts April 28 as the next date for active geomagnetic
> conditions, with a predicted planetary A index of 25.
> 
> Paolo Battezzato, N1XOI, who lives in Westford, Massachusetts,
> northwest of Boston, sends in an interesting report from April 1 of
> a PSK contact, and he says this is no April Fools joke. Paolo
> writes, "I was working PSK31 around 22:45 local time when I saw a
> very weak signal on my Digipan waterfall display. I clicked on the
> trace and read Pablo, AY7X. I'm intrigued by the call sign, so I try
> to reply to his CQ and after few attempts I contact him. Imagine my
> surprise when he tells me he is with a DXpedition in Tierra del
> Fuego, in FD55sd. Not bad from my FN42go grid, almost 11,000 km. By
> the way, did I mention I have a resonant 20m attic dipole and I was
> transmitting with just 3 Watts?"
> 
> Great story, Paolo, and I understand many PSK operators are using
> simple gear with low power and even indoor antennas. In my
> experiments with PSK I've been amazed at the signals it digs out of
> the noise.
> 
> Barry Roseman, W0LHK of Stilwell, Kansas mentioned that during the
> recent N8S expedition to Swains Island, he worked them with 80 watts
> SSB on several bands, including 12 and 15 meters using a 60 meter
> inverted vee pressed into service.
> 
> Ken Kopp, KK0HF of Topeka, Kansas sent a link to an article from
> Physicsweb that proposes a much more modest prediction for solar
> Cycle 24 than the big one predicted last year by Dikpati, et al.
> This article predicts a cycle 35% weaker than the current one. Read
> it at, http://physicsweb.org/articles/news/11/4/7/1 and as Ken
> wrote, "Let's hope these guys are wrong!"
> 
> Jeff Lackey, K8CQ of St. Simons Island, Georgia is living with CC&R
> restrictions limiting his antennas, but he may have happened upon
> just the right magic rain gutter configuration. Two weeks ago Jeff
> wrote, "I use a gutter antenna and 100 watts. The gutter has five
> downspouts, spaced over approximately 90 feet distance as the gutter
> zigzags around the back of the house. I feed the center downspout
> against a ground plane of 16 ground radials. Since January 1, 2007,
> I've worked 33 zones in 121 countries. The gutter loads up fairly
> well even on 160m where I've worked 34 states. I've worked Chagos on
> 80m, about 10,000 miles. Yesterday I worked Swains Island on 12m and
> 17m. And a couple of weeks ago I caught Kermadec. So the DX is
> there. You just have to be patient."
> 
> That is quite an inspiration at the bottom of the solar cycle.
> 
> If you would like to make a comment or have a tip for our readers,
> email the author at, k7ra@xxxxxxxxx
> 
> 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 April 12 through 18 were 0, 0, 11, 0, 0, 12 and
> 11 with a mean of 4.9. 10.7 cm flux was 68.3, 68.3 68.2, 69.3, 69.3,
> 69.2, and 68.8, with a mean of 68.8. Estimated planetary A indices
> were 8, 2, 4, 4, 1, 8 and 9 with a mean of 5.1. Estimated
> mid-latitude A indices were 7, 1, 3, 2, 0, 6 and 6, with a mean of
> 3.6.
> NNNN
> /EX
> 
> 
>

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