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SIM7600: note antenna placement for the first fix

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mikkeli
2026-10-09 16:39:41 +09:00
parent 21007a384e
commit 3926dcc055
1 changed files with 2 additions and 2 deletions
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docs/impl/reports/SIM7600-SETUP.md
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@@ -145,8 +145,8 @@ brief NM connectivity-check penalty (`+20000`) after WiFi returns.
Check: `cgps` or `gpspipe -w -n 10`. On 2026-10-07, tested indoors, gpsd saw `nSat: 10, uSat: 0`, `mode: 1` (no fix).
Next: test with the GNSS antenna (IPEX, labeled GNSS on the HAT) with a clear view of the sky. A cold start can take a few minutes.
**2026-10-09, in the car:** first fix, `mode: 3` (3D) with 4 of 9 satellites used, GPS time valid. No setup changes were needed;
the indoor tests simply lacked sky view.
**2026-10-09, in the car:** first fix, `mode: 3` (3D) with 4 of 9 satellites used, GPS time valid. Passive GNSS antenna on the dashboard, facing the sky. No setup changes were needed;
the indoor tests simply lacked sky view. If fixes prove slow or drop out while driving, try an active antenna (check the HAT supplies antenna bias first).
## Rebuilding qmi_wwan after a kernel update