I only ask since I was told by a friend who is quite near the edge of the official footprint of the satellites that since around Tuesday to this
morning the pictures have been hit and miss from time to time and apparently this coincided with a coronal mass ejection occurring in the area of Earth upsetting propagation. However since the sats are so high in frequency and beamed, would this really happen, or is it that his dish maybe got slightly pushed out of line by those very strong winds I wonder.
Brian

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Brian Gaff \(Sofa\) <briang1@blueyonder.co.uk> wrote:

I only ask since I was told by a friend who is quite near the edge of the official footprint of the satellites that since around Tuesday to this morning the pictures have been hit and miss from time to time and apparently this coincided with a coronal mass ejection occurring in the area of Earth upsetting propagation. However since the sats are so high in frequency and beamed, would this really happen, or is it that his dish maybe got slightly pushed out of line by those very strong winds I wonder.
Brian

It’s the wind. Direct broadcast satellite frequencies are much too high to
be affected by the ionosphere. The only real danger from a coronal mass ejection is that the energetic particles could damage the satellite electronics. That would cause the transmissions to cease. Radiation
hardened electronics and passive shielding techniques for spacecraft are a known technology these days.

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No problems with Sky here. Admittedly I don't watch an awful lot of TV,
and it's possible there were problems when I wasn't watching.

John Hall


In message <sp1t4s$hei$1@dont-email.me>, "Brian Gaff (Sofa)" <briang1@blueyonder.co.uk> writes

I only ask since I was told by a friend who is quite near the edge of the >official footprint of the satellites that since around Tuesday to this >morning the pictures have been hit and miss from time to time and apparently >this coincided with a coronal mass ejection occurring in the area of Earth >upsetting propagation. However since the sats are so high in frequency and >beamed, would this really happen, or is it that his dish maybe got slightly >pushed out of line by those very strong winds I wonder.
Brian

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In article <sp1t4s$hei$1@dont-email.me>,
Brian Gaff \(Sofa\) <briang1@blueyonder.co.uk> wrote:

I only ask since I was told by a friend who is quite near the edge of the >official footprint of the satellites that since around Tuesday to this >morning the pictures have been hit and miss from time to time and apparently >this coincided with a coronal mass ejection occurring in the area of Earth >upsetting propagation.

Unlikely. All recent solar events have been fairly minor. And if
they caused problems, it will be a lot worse in a couple of years -
we're just coming out of a regular solar minimum.

However since the sats are so high in frequency and
beamed, would this really happen, or is it that his dish maybe got slightly >pushed out of line by those very strong winds I wonder.

Wind is much more likely I think!

-- Richard

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