[time-nuts] Practical Survey-In Accuracy?

[Bob Stewart]

Hi Bob,

Thanks for the info.  I'll have to run a long test to see what the difference is.  Maybe I can capture the XYZ coordinates to the PC during the run.


Bob



________________________________
 From: Bob Camp <kb8tq at n1k.org>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
Sent: Monday, August 25, 2014 4:54 PM
Subject: Re: [time-nuts] Practical Survey-In Accuracy?
 

Hi

There are some periodic errors in GPS that only get averaged in after a >= 48 hour survey. It’s not so much a specific error level in meters as much as averaging in all the “issues”. 

Bob

On Aug 23, 2014, at 7:38 PM, Bob Stewart <bob at evoria.net> wrote:

> I've had the LEA-6T sitting in survey-in mode for about 17 hours, and at this point, the u-center software says that the Mean 3D Std Dev is 0.109 meters.  Given that my antenna is just a puck at the peak of the attic (never got around to adding the DIY choke-ring), has this reached the silly number phase, or should I let is simmer overnight before calling it done?
> 
> Bob - AE6RV
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