[KarlInOhio]

Solar Flares Will Disrupt GPS In 2011

and

When solar activity peaks in 2011 and 2012, it could cause widespread disruption to aircraft navigation and emergency location systems that rely heavily on satellite navigation data.

So which is it - Will disrupt or Could disrupt?

[HEY4QDEMS]

To me it says WILL disrupt gps signals and Could be widespread.

Semantics I guess.

[Nowhere Man]

Hopefully by then, we will get some good 10 and 6 meter DX then. I know when there were huge solar flares back in the 1950's, there were reports of people picking up Cuban and Hawaiian TV in New York and so on.

I think GPS operates in the 1600 megacycle (Mc) range IIRC, I say it could be possible the Sun could affect signal propagation. I've heard that during World War II, some early radars were affected by the Sun and flars but in the beginning, the Allies thought the Axis was jamming them and vice versa.