[600MRG] SID - Sudden Ionospheric Distrubances - PDF attached.

Wed Apr 4 16:20:07 EDT 2018

On 4 Apr 2018 at 12:58, Roger Graves wrote:

> Ken,
> 
> What is the source and reference for that article? It just says "draft
> WFD". You might have provided that info in the first post, but I can
> not find it now. 
> 
> Thanks,
> 
> Roger

Gee. I don't know, Roger.

If it isn't here:

https://tinyurl.com/yatpqkto

I don't know where it is.

I'll try to track it down.

I do remember that back in the 1970s, SIDs, SESs and SEAs were a big deal amongst the 
Lowfer crowd. But that was a long time ago.

Ken

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