[time-nuts] GPS & solar-flare

[David McGaw]

Such absorption events are caused by x-rays or protons, not from CMEs, 
so do not need to be directly facing the Earth and happen immediately or 
very soon after a flare.

David


On 5/15/13 7:17 AM, lists at lazygranch.com wrote:
> I had heard on the news that flare wasn't "aimed" at earth, for whatever that is worth.
>
> -----Original Message-----
> From: Azelio Boriani <azelio.boriani at screen.it>
> Sender: time-nuts-bounces at febo.com
> Date: Wed, 15 May 2013 12:26:41
> To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
> Reply-To: Discussion of precise time and frequency measurement
> 	<time-nuts at febo.com>
> Subject: Re: [time-nuts] GPS & solar-flare
>
> My Z3815A doesn't report any error, locator JN55BK, north Italy.
>
> On Wed, May 15, 2013 at 2:07 AM, Ed Palmer <ed_palmer at sasktel.net> wrote:
>> No, my Tbolt & Z3801A carried on, although the Z801A did drop to 1 satellite
>> a few times which is rather unusual.  The attached picture shows what
>> happened.  Times are UTC.  Location is N 50:28, W 104:37.
>>
>> Ed
>>
>> On 5/14/2013 4:17 PM, Brian, WA1ZMS wrote:
>>
>>> While sifting through some network logs in my day-job, I found where
>>> there was a solar flare on May 12th that may have had a negative impact
>>> on our customer's GPS receivers with a 20 second loss of tracking all GPS
>>> SVNs.
>>>
>>> Depending on the geometry of the flare and where the greatest impact was
>>> the outage may or may not have been an issue.
>>>
>>> Did any Time-Nuts notice any complete GPS outages on May 12th?
>>>
>>> -Brian, WA1ZMS
>>
>>
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