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Главная » 2019 » Июнь » 15 » ARLP024 Propagation de K7RA
ARLP024 Propagation de K7RA

ARLP024 Propagation de K7RA

QST de W1AW 
Propagation Forecast Bulletin 24 ARLP024
From Tad Cook, K7RA
Seattle, WA June 14, 2019
To all radio amateurs 

ARLP024 Propagation de K7RA

The long string of days with no sunspots continues, with spots last
observed nearly a month ago, on May 18. According to
http://www.spaceweather.com on June 12, there have been no sunspots
for 24 days in a row.

Predicted solar flux for the next 45 days is 68 on June 14 through
July 28. That's right, the prediction updated on June 13 is nothing
but 68 on every day for the near future.

Predicted planetary A index is 8 on June 14, 10 on June 15-18, 8 on
June 19, 5 on June 20-23, then 8, 12 and 8 on June 24-26, 5 on June
27 through July 5, then 10, 8, 10 and 8 on July 6-9, then 5 on July
10-20, then 8, 10 and 8 on July 21-23, and 5 on July 24-28.

Geomagnetic activity forecast for the period June 14 to July 10,
2019 from F.K. Janda, OK1HH.

"Geomagnetic field will be:
Quiet on June 17-18, 28, July 3, 7-8
Quiet to unsettled on 15, 19, 22, 27, 30, July 1-2, (10)
Quiet to active on June (14,) 16, 20-21, 26, 29, (July 4-9)
Unsettled to active on June 23-25
No active to disturbed days predicted.

"Solar wind will intensify on June 14 (-15), 24-27, July 5-7, 10-11

"Parenthesis means lower probability of activity enhancement."

The ARRL June VHF Contest was last weekend, and Scott Avery, WA6LIE
reports, "This last VHF contest was definitely unique. During the
day expecting sporadic-E, we were influenced by a lot of meteor
scatter caused by the Beta Taurids, a DAYTIME event that is not
advertised as it is not seen and only radio astronomers and hams
would be interested. I spent a lot of time on 6 meters FT8 mode,
little SSB/CW activity and the same with 2 meters. I was bombarded
with pings CQ TEST and that station was gone. This happened for most
of the daylight hours with little 2 way QSO exchanges.

"MSK144 worked GREAT, but everyone was on FT8, so limited stations
to work.

"About 0300z we had an opening to Japan that lasted for about 3
hours so I snagged a few JAs. That opening to central coast of
California was about 1 hour long, as most was northern and southern

"The Midwest got a JA opening Sunday around 2100z for about an hour.

"Finally, at 2200z Sunday we got some multi-hop Es to the east
coast, a bit late but welcome."

Jon Jones, N0JK sent a report on the VHF contest:

"Conditions on 6 were uneven. But Sunday evening 6 opened to Japan
from the Midwest.

"Kansas 6 meter ops N0LL, WQ0P (worked 4) and KF0M (logged 2) worked
Japan from 2330-0030z. I decoded JG1TSG about 0020 on just a 1/4
wave vertical whip on my car.

"W7D/R put rare grid DN10 in many logs."

Steve Sacco, NN4X reported, "Finally, some decent E-skip on 12
meters! Was able to work S9A and some others for new DXCC entities
on 12M today (Sunday 6/9/2019, 1537Z on FT8)."

Check out the latest video from Dr. Tamitha Skov, WX6SWW:


This weekend is the CW portion of the All-Asian DX Contest. Details
can be found at,

If you would like to make a comment or have a tip for our readers,
email the author at, k7ra@arrl.net.

For more information concerning radio propagation, see the ARRL
Technical Information Service web page at,
http://arrl.org/propagation-of-rf-signals. For an explanation of
numbers used in this bulletin, see

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

Monthly propagation charts between four USA regions and twelve
overseas locations are at http://arrl.org/propagation.

Instructions for starting or ending email distribution of ARRL
bulletins are at http://arrl.org/bulletins.

Sunspot numbers for June 6 through 12, 2019 were 0, 0, 0, 0, 0, 0,
and 0, with a mean of 0. 10.7 cm flux was 68.9, 68.9, 68.4, 68.4,
68.9, 69.7, and 69.5, with a mean of 69. Estimated planetary A
indices were 3, 4, 18, 6, 3, 3, and 4, with a mean of 5.9. Middle
latitude A index was 4, 6, 14, 8, 4, 3, and 5, with a mean of 6.3.
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