Slow GPS on Retevis RT3S

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KE8WIY
Posts: 9
Joined: Sun Mar 12, 2023 9:30 am

Slow GPS on Retevis RT3S

Post by KE8WIY » Fri Mar 24, 2023 2:59 pm

So my GPS was outside today with a clear view of the sky for over an hour and never got a fix. Is there an issue with this? Also is there a way to set the position manually so I can use the satellite tracking?

SA0BUX
Posts: 544
Joined: Tue Jul 05, 2022 8:50 am
Location: JO99ah, Stockholm, Sweden
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Re: Slow GPS on Retevis RT3S

Post by SA0BUX » Fri Mar 24, 2023 3:18 pm

The sensitivity on the GPS and it's antenna is very bad, I have not yet been able to get a fix with my RT3S.
It's also doing cold start everytime as there is no battery backup of the GPS and it takes time to download almanac.
I could see some satellites in the status sometimes.

But my Anytone 878UV+ isn't much better, I have stopped try using the GPS on these radios, it's just a gimmick.

You can key in the latitude and longitude in the Radio Info Location screen.

https://github.com/LibreDMR/OpenGD77_Us ... ion-screen

CU7AAZ
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Joined: Sat Mar 26, 2022 8:13 pm
Location: Azores

Re: Slow GPS on Retevis RT3S

Post by CU7AAZ » Fri Mar 24, 2023 6:36 pm


n6io
Posts: 11
Joined: Sat Aug 15, 2020 3:54 am

Re: Slow GPS on Retevis RT3S

Post by n6io » Sun Mar 26, 2023 3:27 am

I have had good luck with the GPS in my RT3S. Even indoors I get a lock within 10 minutes. Reception is best if you lay it flat, display up.

MW0KJN
Posts: 10
Joined: Fri Mar 31, 2023 12:27 pm

Re: Slow GPS on Retevis RT3S

Post by MW0KJN » Fri Mar 31, 2023 12:30 pm

Mine seemed quite slow yesterday, after an initial flash of the firmware.

I went for a quick walk, within a few minutes it had a lock, with a 1m accuracy reported.

Checking the reported lat / lon, it was spot on as per the map.

73

Kev MW0KJN.

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