# MC7455 GPS Setup

**URL:** <https://forum.sierrawireless.com/t/mc7455-gps-setup/16158>\
**Category:** MC/EM Series\
**Created:** [April 23, 2019, 2:24pm UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158 "2019-04-23T14:24:08Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mnik17](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mnik17](https://forum.sierrawireless.com/u/mnik17)\
**Post date:** [April 23, 2019, 2:24pm UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158/1 "2019-04-23T14:24:08Z")

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Hello,

I’ve been trying to obtain GPS data from the MC7455 modem, however I’ve run into some trouble. When I try to track using the Skylight application (build 4442) it just gets stuck on acquiring location. I also see data being posted on the NMEA port, however when I try to parse it with one of the online NMEA parsers it turns out that it doesn’t really contain any information.

So I decided to try and see if I can get it fix using some of the AT commands. I’ve set  
AT!CUSTOM=“GPSENABLE”,1  
AT!CUSTOM=“GPSLPM”,0  
as well as  
AT!GPSAUTOSTART=1  
However there’s still no difference. If I try !GPSTRACK or !GPSFIX I just receive an ERROR.

I also tested the antenna that I’m currently using with another modem and it worked fine.

Any ideas?

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**Author:** ![jleitner](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jleitner](https://forum.sierrawireless.com/u/jleitner)\
**Post date:** [April 24, 2019, 3:43pm UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158/2 "2019-04-24T15:43:17Z")

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Hello, Skylight is not really being supported as windows MBIM CM is now what is being used.

Please try this from an AT terminal session:

1. AT!GPSAUTOSTART=1,1,255,100, 1
2. Make sure you have enabled the AT+WANT=1 for an active antenna
3. You antenna has a clear view for the sky
4. AT!RESET
5. Type AT!GPSSATINFO? several times to start showing the satellite fixes

See if this works over using Skylight.

Jon

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**Author:** ![mnik17](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mnik17](https://forum.sierrawireless.com/u/mnik17)\
**Post date:** [April 25, 2019, 9:18am UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158/3 "2019-04-25T09:18:41Z")

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Hi Jon,

I tried what you’ve suggested, however to no avail. I don’t really mind if skylight isn’t working, what’s important is to receive the correct information on the NMEA port. I’m also attaching a screenshot if that’s helpful.

 ![upload](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/0/04635d392ba50a42533628dd9dc4e3475b7c2fca.png)

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<div class="post-metadata">

**Author:** ![mnik17](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mnik17](https://forum.sierrawireless.com/u/mnik17)\
**Post date:** [April 25, 2019, 11:54am UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158/4 "2019-04-25T11:54:40Z")

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Actually after I restarted the PC it finally worked.  
Thanks.

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<div class="post-metadata">

**Author:** ![jleitner](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jleitner](https://forum.sierrawireless.com/u/jleitner)\
**Post date:** [April 25, 2019, 3:42pm UTC](https://forum.sierrawireless.com/t/mc7455-gps-setup/16158/5 "2019-04-25T15:42:54Z")

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Yes, I see it now worked and you usually need three or more satellites to be in view to get the accurate positioning and NMEA strings. Jon