ARLP032 Propagation report de K7RA

ARLP032 Propagation de K7RA

Average daily sunspot numbers rose very little this week, less than 6 points to 7.3. There were no major geomagnetic upsets, only slightly unsettled conditions on the first day of August 2007.

We saw eight straight days of no sunspots, then a spot or two over four days, then no spots on the first two days of August.

A week from now, August 10, we may see the beginning of several days with a few sunspots every day.

Expect unsettled geomagnetic conditions centered on August 7 and again on August 10.

Geophysical Institute Prague predicts quiet conditions August 3-5, quiet to unsettled August 6, unsettled to active August 7, and back to quiet August 8-9.

With July over, we can spin some numbers and look for trends. Looking at 3-month smoothed sunspot numbers, now the July numbers we can add to May and June to show the three-month average centered on June. These numbers are based on data from the past 21 months :

November 2005 through July 2007:

Dec 05 40.6
Jan 06 32.4
Feb 06 18.1
Mar 06 27.7
Apr 06 38.5
May 06 39.7
Jun 06 28.9
Jul 06 23.3
Aug 06 23.5
Sep 06 21.2
Oct 06 24.1
Nov 06 23.1
Dec 06 27.3
Jan 07 22.7
Feb 07 18.5
Mar 07 11.2
Apr 07 12.2
May 07 15.8
Jun 07 18.7

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F1JXQ

David F1JXQ - Ham Radio - Web 2.0 - QTH France (Aix les Bains 73) Locator JN25wq - Former TO1USB and FG/F1JXQ - 14Mhz - 28Mhz - 50 Mhz - 144Mhz - SSB & PSK31 DX