No subject
Tue Sep 8 00:29:45 UTC 2009
0230-0830z, 17 meters 1100-1230z, 20 meters 1230-1500z and
1730-1930z, 30 meters 1300-1800z, 40 meters 1330-1730z, 80 meters
1430-1700z.
On most of the above paths, signals gradually strengthen throughout
the given time period.
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 web page 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/.
Instructions for starting or ending email distribution of this
bulletin are at http://www.arrl.org/w1aw.html#email.
Sunspot numbers for September 17 through 23 were 0, 0, 0, 0, 11, 26,
and 31 with a mean of 9.7. 10.7 cm flux was 69.1, 69, 70.5, 71.3,
71.9, 74.7, and 76.1 with a mean of 71.8. Estimated planetary A
indices were 8, 3, 2, 4, 7, 4 and 2 with a mean of 4.3. Estimated
mid-latitude A indices were 6, 2, 1, 3, 5, 2 and 1 with a mean of
2.9.
NNNN
/EX
--
Raffy Shammay
VK2RF
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