> For the complete documentation index, see [llms.txt](https://docs.4dsky.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.4dsky.com/most-common-issues/when-setting-up-1337-it-is-stuck-with-a-3d-gps-fix-error-message.md).

# When setting up 1337 it is stuck with a 3D GPS fix error message

When you're stuck here then it means that the device has not seen enough satellites to get a valid gps signal. Your antenna needs to see clear sky and it can take up to 15 minutes to observe the signal.

<figure><img src="https://4020475442-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1Jvx1UyE9bmjNw4X2FPA%2Fuploads%2FwERDtjZKC5doBEkdzsoj%2Fimage.png?alt=media&amp;token=12c05d89-1602-4124-9729-cead4ad4caa0" alt="" width="188"><figcaption></figcaption></figure>

To troubleshoot, goto <http://your-ip-address/status\\_gps.html> and look at then antenna statusI<br>

<figure><img src="https://4020475442-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1Jvx1UyE9bmjNw4X2FPA%2Fuploads%2FHk1fNnnuFAQuz14G6FHE%2Fimage.png?alt=media&amp;token=aa8220ff-a8d3-44d1-9543-a0ab70c24f67" alt=""><figcaption></figcaption></figure>

If it's anything other than OK then&#x20;

* Is the GPS antenna connected to the GPS jack?
* Have you screwed in the cable as tight as possible?  Sometimes then nut gets stuck midway.&#x20;
* Have you crossed antenna cables and they ended up in wrong jacks? That happens a lot with long cables and can be deceptive (planes might show up in the map but system is degraded).&#x20;