ARLP034 Propagation de K7RA


Here’s the latest propagation forecast from Tad Cook (K7RA).

Views expressed in this Amateur Radio News summary are those of the reporters and correspondents.

Accessed on 21 August 2021, 1031 UTC.

Content supplied by Tad Cook (K7RA), W1AW, and HQ ARRL.

Source:

https://mail.google.com/mail/u/0/#inbox/FMfcgzGkZsxHgkjwBgGpfmMPwzPMjpTk

Please click link or scroll down to read your selections.

SB PROP @ ARL $ARLP034
ARLP034 Propagation de K7RA

ZCZC AP34
QST de W1AW
Propagation Forecast Bulletin 34  ARLP034
From Tad Cook, K7RA
Seattle, WA  August 20, 2021
To all radio amateurs

SB PROP ARL ARLP034
ARLP034 Propagation de K7RA

Weak solar activity persists, but with just one spotless day in the
current reporting week, August 12 to 18, on Friday, August 13.  Last
week we reported four days with no sunspots in the previous seven
days.

Average daily sunspot number increased from 9.9 last week to 17.7
during this week.

Solar flux was the same, with the average inching from 73.7 to 73.8.

Geomagnetic indicators were also stable.  Average planetary A index
was 6.1, compared to 6.3 last week.  Average middle latitude A index
moved from 7.6 to 7.

Predicted solar flux is 75 on August 20, 73 on August 21 to 23, 72
on August 24 to 26, 73 on August 27 to 29, 74 on August 30 through
September 1, 73 on September 2 to 11, 74 on September 12, 73 on
September 13 to 17, 72 on September 18, and 73 on September 19 to
25.

Predicted planetary A index is 5 on August 20, then 8, 8, 10, 14, 12
and 8 on August 21 to 26, 5 on August 27 through September 1, then 8
and 12 on September 2 and 3, 5 on September 4 to 10, 8 on September
11 to 13, 5 on September 14 to 18, then 8, 12 and 8 on September 19
to 21, and 5 on September 22 to 28.

On August 14 Spaceweather.com reported that there were no sunspots,
and that so far in 2021 there were 56 days with no spots.  “That
might sound like a lot, but it is in fact a sharp reduction from
hundreds of spotless days observed in 2019 and 2020.  Despite
today’s blank sun, solar activity is intensifying compared to
previous years.”

Geomagnetic activity forecast for the period August 20 til September
14, 2021 from OK1HH, who has returned from his hike in the mountains
of the Czech Republic:

“Geomagnetic field will be
Quiet August 20 and 21, 28, September 1, 5, 10, 14
Quiet to unsettled August 22, 25 to 27, 31, September 2, 4, 6 to 9
Quiet to active August 30, September 3, (11 to 13)
Unsettled to active August (23 and 24, 29)
Active to disturbed, Nothing predicted

Remarks:
– Parenthesis means lower probability of activity enhancement.
– The predictability of changes is very low because there are not
enough indications.”

Ken Brown, N4SO reported hearing a new 10 meter beacon, N5TIT/B on
28.209 MHz.

Signal was weak, and the path was 520 miles.

I’ve noted that the relatively low solar activity has depressed 10
meter signals, and my practice of using remote SDR receivers to hunt
for beacons turns up little activity lately.

At the end of July I spent 8 days in hospital for neurosurgery, and
managed to use kiwisdr.com/public/ to hunt for 10 meter beacons, and
wrote ARLP031 that week as well.  I used the list at
https://www.qsl.net/wj5o/bcn.htm to help identify them, and sent
reports to the beacon owners.

The latest from WX6SWW:

https://youtu.be/GdI-itUhKec

For more information concerning shortwave radio propagation, see
http://www.arrl.org/propagation and the ARRL Technical Information
Service at http://arrl.org/propagation-of-rf-signals.  For an
explanation of numbers used in this bulletin, see
http://arrl.org/the-sun-the-earth-the-ionosphere.

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/.

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

Sunspot numbers for August 12 through 18, 2021 were 11, 0, 47, 23,
14, 13, and 16, with a mean of 17.7.  10.7 cm flux was 73.6, 72.9,
72.6, 74.6, 74.4, 73.1, and 75.3, with a mean of 73.8.  Estimated
planetary A indices were 4, 6, 5, 10, 7, 5, and 6, with a mean of
6.1 Middle latitude A index was 6, 9, 4, 13, 8, 7, and 6, with a
mean of 7.6.
NNNN
/EX


Aloha es 73 de Russell Roberts (KH6JRM)

Public Information Officer

Hawaii County, ARRL Pacific Section

https://bigislandarrlnews.com

Retired News director of Pacific Radio Group Radio Stations on Hawaii-the Big Island. I have more than 40 years of broadcast experience, including positons at KTUH-FM (UH-Manoa), KPOI-FM (Honolulu). KHLO-AM (Hilo), KKBG-FM (KBIG-FM)(Hilo/Kona), KAPA-FM (Hilo-Kona). Native-FM (Hilo-Kona), and ESPN Hawaii (Hilo-Kona). Former University of Hawaii-Hilo librarian. Retired Air Force Officer. Amateur (Ham) Radio operator since 1977 (currently holds the Amateur Extra Class License from the FCC-KH6JRM).... Can read, write, and speak Russian. Retired on 30 September 2011, but still maintains a Hawaii Island News Blog.

Tagged with: , , , , , , , ,
Posted in Amateur/Ham Radio, ARRL, Big Island ARRL News, Big Island of Hawaii ARRL info, Club Activities, Contests, DX-peditions
Site Administrator and PIO
Russ Roberts

Russ Roberts

Retired News director of Pacific Radio Group Radio Stations on Hawaii-the Big Island. I have more than 40 years of broadcast experience, including positons at KTUH-FM (UH-Manoa), KPOI-FM (Honolulu). KHLO-AM (Hilo), KKBG-FM (KBIG-FM)(Hilo/Kona), KAPA-FM (Hilo-Kona). Native-FM (Hilo-Kona), and ESPN Hawaii (Hilo-Kona). Former University of Hawaii-Hilo librarian. Retired Air Force Officer. Amateur (Ham) Radio operator since 1977 (currently holds the Amateur Extra Class License from the FCC-KH6JRM).... Can read, write, and speak Russian. Retired on 30 September 2011, but still maintains a Hawaii Island News Blog.

View Full Profile →

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 157 other followers

  • Amateur Radio Newsline Report 2291 for Friday September 24th, 2021 September 24, 2021
    - HOSPITALIZED CHILDREN CONTACT ISS VIA HAM RADIO - RESEARCHER BLAMES SATELLITES FOR NIGHT SKY 'POLLUTION' - ESSEX HAM SPECIAL EVENT SUPPORTS NEW HACKSPACE - NEW MICROCONTROLLER EDITOR AT CQ MAGAZINE - SILENT KEY: EAST COAST REFLECTOR'S RICK BEUTNAGEL, N3RRB - BOUVET 3Y0J TRIP GETS ARRL GRANT - NATIONAL HURRICANE CONFERENCE POSTED ON YOUTUBE - […]
    Kevin Trotman
  • Amateur Radio Newsline Report 2290 for Friday September 17th, 2021 September 16, 2021
    - COVID SPURS CANCELLATION OF TOKYO HAM FAIR - IARU REGION 3 OPTS FOR VIRTUAL CONFERENCE - AMSAT SYMPOSIUM MOVES FROM HOTEL INTO VIRTUAL MODE - SPACEX RECOVERY VESSELS NAMED FOR 'BOB AND DOUG' - SPECIAL EVENT CELEBRATES BIRTHDAY OF VOA RELAY STATION - ULTRA-TINY BATTERY SHOWS POWER AND PROMISE - SILENT KEY: CHARLIE BYARS, W5GPO, LONGTIME WEATHER SP […]
    Kevin Trotman
  • Amateur Radio Newsline Report 2289 for Friday September 10th, 2021 September 10, 2021
    - RADIO OPERATORS SUPPORT WILDFIRE ANIMAL RESCUE - GENESIS SATELLITES DESTROYED IN EXPLOSION - MEET ARRL MAXIM AWARD WINNER: KATHERINE FORSON, KT5KMF - US HAMS ACTIVATE THE APPALACHIAN TRAIL - LISATS HAM CLUB TO RETRANSMIT INSPIRATION4 LAUNCH - IN SWITZERLAND, HIGH-FLYING QSOS IN HOT AIR BALLOON - BBC INTERVIEWS DEVELOPER OF WORLD'S FIRST MICROSATELLITE […]
    Kevin Trotman
  • The K7RA Solar Update September 24, 2021
    Tad Cook, K7RA, Seattle, reports: Last week, we reported a big increase in activity with the daily sunspot number reaching 124, but by the end of that week all sunspots had disappeared. The sun was blank for several days, but sunspots returned on September 19.Average daily sunspot numbers this week were 28.7, which was below the 58.3 average reported a week […]
  • Open-Source Amateur Satellite Work Not Subject to Export Administration Regulation September 23, 2021
    CEO Michelle Thompson, W5NYV, reports that Open Research Institute (ORI) received an advisory opinion from the US Commerce Department Bureau of Industry and Security (BIS) on September 2. The letter confirmed that public internet posts regarding open-source amateur satellite communications work are not subject to Export Administration Regulation (EAR). ORI w […]
  • ARRL, RSGB Announce Joint Events to Celebrate Centenary of Ham Radio Transatlantic Success September 23, 2021
    ARRL and the Radio Society of Great Britain will jointly sponsor events to celebrate the achievement of transatlantic communications by radio amateurs 100 years ago.In December 1921, ARRL sent Paul F. Godley, 2ZE, as its representative to listen for amateur signals from North America during the Second Transatlantic Tests. Setting up his listening station in […]
Latest Amateur Radio Posts
Blog Stats
  • 24,383 hits
Post Archives
Follow me on Twitter
%d bloggers like this: