Re: getting GPS with EM7355 to work

[Gary E. Miller]

Yo Marco!

On Thu, 25 Jul 2024 23:04:18 +0200
Marco Moock <mm@dorfdsl.de> wrote:

> > Nope.  You have no fix at all.  Does it work outside?  
> 
> Is that related to the antenna?

All documentation for your part is behind a login.  With no doc,
I can only guess.

> My laptop has 2 antennas, main and aux. The module has 3 sockets,
> main, aux and GPS. I connected AUX to GPS. Is that ok or does GPS
> need a special antenna?

GPS antennas are unlike most other antennas.  The main point i sthat
a GPS antenna is circularly polarized.  Most GHz antennas are linearly
polarized, so don't pick up GPS sigaals.  Then you need a good LNA that
has GPS signas its pass band.

> > > How can I make the modem create they tty device that will be used
> > > by gpsd?    
> > 
> > Your guess is as good as mine.  I guess you could pipe that mmcli
> > output to a program to remove the formatting and return it to NMEA,
> > but you still need to get a fix.  
> 
> So is my guess right that it doesn't get the position, so this must be
> fixed first before doing any format parsing?

Nope.  gpsd has no problem reading your NMEA, if you get it on a tty.
Fix, or no fix, but it is not exactly useful with no fix, no time, etc.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

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