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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
k7ra@arrl.net [ mailto:k7ra@arrl.net ] . 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 [ http://www.arrl.org/propagation?utm_source=Informz&utm_medium=Email&utm_campaign=ARRL
] and the ARRL Technical Information Service web page at, www.arrl.org/propagation-of-rf-signals [ http://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 [ http://arrl.org/the-sun-the-earth-the-ionosphere ] .


An archive of past propagation bulletins is at www.arrl.org/w1aw-bulletins-archive-propagation [ http://arrl.org/w1aw-bulletins-archive-propagation ] . More good information and tutorials on propagation are at http://k9la.us [ http://k9la.us/ ] .


Also, check this article:
https://bit.ly/3Rc8Njt [ 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 [ http://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

ARRL® The National Association for Amateur Radio®
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