[time-nuts] Solar Storm Effects?

John Ackermann N8UR jra at febo.com
Fri Mar 9 13:45:57 UTC 2012


Last evening I looked at my raw (but sawtooth corrected) GPS vs. Rb and 
didn't see anything noteworthy.

John
----

On 3/8/2012 10:20 PM, Mark Spencer wrote:
> Over last day and a half I've been comparing the  10Mhz output of my Jupiter based GPSDO (actually a G3RUH GPSDO) to a BVA OCXO.   So far I don't see anything un expected.   That being said I recognize that it would take a fairly significant disruption in the GPS signal for the affects to be noticeable in the 10 Mhz output.
>
> --- On Thu, 3/8/12, ALAN MELIA<alan.melia at btinternet.com>  wrote:
>
>> From: ALAN MELIA<alan.melia at btinternet.com>
>> Subject: Re: [time-nuts] Solar Storm Effects?
>> To: "Discussion of precise time and frequency measurement"<time-nuts at febo.com>
>> Received: Thursday, March 8, 2012, 10:24 AM
>>  From the look of it to me it is a
>> "non-event" it looks like it bounced off and didnt
>> reconnect. there is little increase in the ring current i.e.
>> the charge in the van Allen belt according to the Dst index
>> 1500z today......yesterdays event was bigger from that point
>> of view
>>
>> Alan G3NYK
>>
>>
>> --- On Thu, 8/3/12, John Ackermann N8UR<jra at febo.com>
>> wrote:
>>
>>> From: John Ackermann N8UR<jra at febo.com>
>>> Subject: Re: [time-nuts] Solar Storm Effects?
>>> To: jfor at quikus.com,
>> "Discussion of precise time and frequency measurement"
>> <time-nuts at febo.com>
>>> Date: Thursday, 8 March, 2012, 15:20
>>> On 3/8/2012 10:08 AM, J. Forster
>>> wrote:
>>>> The media is reporting a large solar storm and
>> saying
>>> it will upset GPS
>>>> among other things.
>>>>
>>>> Has anybody see any effects?
>>>
>>> I won't be able to look at the data until I get home
>> from
>>> work tonight, but last evening I started measuring the
>>> sawtooth-corrected output of a CNS2 clock vs. the PPS
>> output
>>> of an Rb standard.  Wondering if I'll see any
>>> glitches... if so I'll report back here.
>>>
>>> There was a major solar event in December, 2006 and at
>> the
>>> time I was monitoring GPS signal strength.  I got a
>>> very noticeable glitch at the time the blast hit the
>> earth:
>>> http://febo.com/pages/gps_solar_flare/
>>>
>>> Unfortunately, I didn't have an appropriate PPS
>> measurement
>>> going on at the time.
>>>
>>> John
>>>
>>>
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>
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