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Re: [gpsd-users] Get fix mode with disconnect antenna

From: Gerry Creager - NOAA Affiliate
Subject: Re: [gpsd-users] Get fix mode with disconnect antenna
Date: Tue, 19 Nov 2013 11:23:19 -0600

The older PVTs, when they lost 2D fix, went to invalid. There were some variants that could be placed in a timing mode; in that mode, they selected the satellite with the highest elevation angle and produced a binary time statement, but could, if they could see 3+ satellites that were above the elevation mask, also get a 3D fix and give good position data.

gerry n5jxs

On Tue, Nov 19, 2013 at 9:38 AM, F Hillhouse Jr <address@hidden> wrote:
> Are you sure?  Do you see that in the debug output?  Most GPS
> will just stop sending anything when they lose the antenna.

Not mine. It sends sentences with an invalid indicator.
How would a GPS know whether it was in a parking garage or had no antenna?
Either way it is not hearing satellites.

Best regards,
Fred n7FMH

Gerry Creager
“Big whorls have little whorls,
That feed on their velocity; 
And little whorls have lesser whorls, 
And so on to viscosity.” 
Lewis Fry Richardson (1881-1953)

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