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Author Topic: solar flux index is 389???  (Read 1816 times)
K1ZJH
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Posts: 1078




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« on: July 12, 2012, 02:30:33 PM »

Or do I need new glasses??? This would seem to be a new world record for SFI, I recall the record was just over 200
some years back.

pete
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KD8MJR
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Posts: 2516




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« Reply #1 on: July 12, 2012, 02:36:40 PM »

You need glasses  Grin its at 165 as of 5:36PM EST.
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N6PSE
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Posts: 555


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« Reply #2 on: July 12, 2012, 02:44:54 PM »

The solar data gizmo on DX Summit did actually show the SFI as 389 this afternoon!    I thought I was seeing things too!
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K1ZJH
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Posts: 1078




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« Reply #3 on: July 12, 2012, 02:46:37 PM »

Same on QRZ.com!!!!
 
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N6ORB
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Posts: 243




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« Reply #4 on: July 12, 2012, 02:46:56 PM »

The first of Penticton Observatory's three daily solar flux readings was taken just as an X class flare was winding down. Readings taken during a major flare can be very high but don't mean that propagation is also very good. Instead, an X class flare can cause a radio blackout on the sunny side of our planet.

http://www.solarham.net/

Dave, N6ORB
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W5DQ
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« Reply #5 on: July 12, 2012, 02:48:51 PM »

Or do I need new glasses??? This would seem to be a new world record for SFI, I recall the record was just over 200
some years back.

pete

No wonder it is so darn hot outside around here  Grin and I thought it was just me ....
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Gene W5DQ
Ridgecrest, CA - DM15dp
www.radioroom.org
K1ZJH
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Posts: 1078




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« Reply #6 on: July 12, 2012, 03:06:19 PM »

Well, it got me big time! I was tuning on two meters for some ZLs!   Grin Grin
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NU1O
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Posts: 2691




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« Reply #7 on: July 12, 2012, 06:07:19 PM »

My radio was as if I had disconnected the coax around 1700 UTC today. I knew it had to be a solar disturbance. I had the NBC Nightly news on and they reported it.  Solar Ham reports there was a strong R3 Radio Blackout on the sunlit side of Earth at 16:52 UTC.  Here is the definition of an R3 blackout: " Wide area blackout of HF radio communication, loss of radio contact for about an hour on sunlit side of Earth. "  I did not bother with the rig until around 2200 UTC so I have no idea if the blackout only lasted for about 1 hour.  Conditions were very good on 20 meters at 22:30 UTC when I worked TR8JCV in Libreville Gabon who was only running 50 watts.  He did, however, have a 204BA for an antenna.

The highest SFI I have written down in my logbooks was 367 on January 31, 1991.  It then dipped under 200 for a dew weeks and once again hit 300 again, actually 310 on February 26, 1991.

I was not very active for the next peak so my numbers are meaningless.

73,

Chris/NU1O
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K3NRX
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« Reply #8 on: July 12, 2012, 07:10:36 PM »

The highest SFI I have written down in my logbooks was 367 on January 31, 1991.  It then dipped under 200 for a dew weeks and once again hit 300 again, actually 310 on February 26, 1991.

REPLY: I really miss those days.....For more than one reason.... Roll Eyes Cry Sad Shocked.........

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K5KNE
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Posts: 65




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« Reply #9 on: July 12, 2012, 09:38:55 PM »

I experienced something really odd today on HF.  I could not pick up a single decent signal on 75, 40, 20, 15, or 10 meters.  The solar flare really blacked out the HF bands.  After a few hours I heard signals and talked to a couple of ajacent states.

I hear that it is not over.

Walter   K5KNE   Belton, TX
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N5UD
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Posts: 803




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« Reply #10 on: July 13, 2012, 02:29:17 AM »

That was one of the strongest radio blackouts I have heard in many years. I could not even ShortWave BroadCast signals. Just plain radio dead 5 MHz up.

I recall those SFI numbers above 300 in late 80's and early 90's. They made for some great 6 M F2 openings ! Even had some aurora on radio, and visible far south
USA.

73 Tony N5UD
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