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

From: Gary E. Miller
Subject: Re: [gpsd-users] Get fix mode with disconnect antenna
Date: Tue, 19 Nov 2013 10:14:28 -0800

Yo F!

On Tue, 19 Nov 2013 10:38:22 -0500
"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.

Many external GPs antennas are active antennas.  They need power from
the GPS to function and thus use a little current.  A lot off GPS's
detect when the current is zero and flag the user that the antenna
failed.  I have a few GPS with external antennas that do that.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
        address@hidden  Tel:+1(541)382-8588

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