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SB PROP @ ARL
$ARLP043
ARLP043
Propagation de
K7RA
ZCZC
AP43
QST
de W1AW
Propagation
Forecast
Bulletin 43
ARLP043
From
Tad Cook, K7RA
Seattle,
WA November 8,
2024
To
all radio
amateurs
SB
PROP ARL
ARLP043
ARLP043
Propagation de
K7RA
Solar
activity
increased this
week. The
average daily
sunspot number
went from
197.4 to
193.4.
Predicted
solar flux is
265 on
November 8,
260 on
November 9,
250 on
November
10-11, 245 on
November
12-13, 240 on
November 14
and 165 on
November 15.
Activity
on 10-meters
has been
fantastic.
There is no
want of
contacts using
CW, SSB, or
FT8. Radio
operators can
quickly fill
up their logs
with QSOs made
on this band.
And don't
forget
6-meters.
Send
your tips,
reports,
observations,
questions, and
comments to [email protected].
When reporting
observations,
don't forget
to tell us
which mode you
were
operating.
For
more
information
concerning
shortwave
radio
propagation,
see www.arrl.org/propagation
and the ARRL
Technical
Information
Service web
page at, www.arrl.org/propagation-of-rf-signals.
For an
explanation of
numbers used
in this
bulletin, see
www.arrl.org/the-sun-the-earth-the-ionosphere.
An
archive of
past
propagation
bulletins is
at www.arrl.org/w1aw-bulletins-archive-propagation.
More good
information
and
tutorials on
propagation
are at http://k9la.us.
Also,
check this
article:
https://bit.ly/3Rc8Njt
''Understanding
Solar
Indices'' from
September 2002
QST.
Instructions
for starting
or ending
email
subscriptions
to ARRL
bulletins are
at www.arrl.org/bulletins.
Sunspot
numbers for
November 1-6
were 187, 210,
242, 220, 191,
149, and 155,
with a mean of
193.4. The
10.7
centimeter
flux was
252.2, 246.6,
236.7, 238.3,
241.4, 255.9,
and 234.8,
with a mean of
243.7.
Estimated
planetary A
indices were
7, 13, 11, 14,
11, 10, and 8,
with a mean of
10.6. Middle
latitude A
index was 6,
9, 8, 11, 10,
and 9 for
November 1-6,
with missing
data for
November 7.
The mean of
the six days
was 8.8.
NNNN
/EX
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