Solar Flare and AM radio?, page 1
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Topic started on 6-7-2009 @ 08:48 PM by arizonascott

Solar Flare and AM radio?


www.earthfiles.com
July 6, 2009 - Sudden Intense Sunspot 1024. Could It Flare on July 7, As Crop Formations Since April Have Seemed to Forecast?

Active region 1024 is putting on a fantastic show. The center of this region is incredibly bright and fluctuating.” - Pete Lawrence, Amateur Astronomer, Selsey, U.K.

Spaceweather.com reports, “Sunspot 1024 is crackling with B- and C-class solar flares. The activity is so intense, astronomers can't seem to take a picture of the sunspot without catching a flare in action. Solar observers haven't seen an active region like this one in more than two years. It
(visit the link for the full news article)


reply posted on 7-7-2009 @ 11:01 AM by darklife
Don't forget also that most of the static on your radio is generally caused by the sun in the first place. If the sun didn't exist our radios would have very little to almost no static on them. AM would still crackle from earthly causes like lightning and man made interference, but FM would almost be silent w/o the sun causing its burps and radiation.
Static on a radio is caused by a few things, the sun itself, earth noises, man made, and internal static caused by the receivers sensitive front end amplifying devices.

Usually the sunspots effect the lower VHF bands the most but it's well known to cause loud strange sounding static on shortwave bands and could cause those same effects on the higher AM broadcast bands.
I have noticed this effect quite a bit these last few years. I am an avid shortwave listener and radio electronics has always been one of my favorite hobbies. These last years just listening to channels w/o any signals and only static is interesting because you can almost hear the sun. Sometimes the flairs are so powerful that the static is strong enough to make the signal strength meter on my radio go half up above its normal 0 point.
From my experience flairs tend to sound almost like digitized static like it's grainy and blotchy sounding where as regular static just sounds like popcorn.

If I recall correctly this is how NASA studies the suns activity on radio bands by simply taking readings of static strength on the upper UHF bands.

Interesting topic, hope some others can fill us in.

[edit on 7/7/2009 by darklife]
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