GPS problems with my S9B

sartoric

I had some issues with slow fix too a couple of days ago.
So maybe there was some problem in the file data

freeheeler

@basetta79
just make sure your watch completely synces to SA before an activity. the agps file gets synced with the watch-phone connection
I’ve had bad agps and also in general bad recording days, too. they are very rare IMHO

basetta79

@freeheeler ok. This morning the agps were synced to the app before the run but the result was awful (BUT the SA wasn’t updated). Tomorrow I will retry…

isazi

@basetta79 if you sync AGPS do it more than 15 minutes before you start the activity. Unpacking and making the files available takes time, so if you sync a new AGPS and then start immediately it is not available.

basetta79

@isazi ok!

freeheeler

@isazi
the best we can do is using the watch every day and sync it every day

@isazi are we ok the AGPS sync only by SA ? Or it’s with suunto link ?

isazi

@g287-sf SA is more than enough.

Dimitrios Kanellopoulos

@basetta79 this is made with power saving mode

basetta79

@dimitrios-kanellopoulos no it wasn’t. It was in Performance mode.

Edit: at least that was what I set.

Dimitrios Kanellopoulos

@basetta79 can I have a suunto app link ?

basetta79

@dimitrios-kanellopoulos hope you can check it

https://www.suunto.com/move/basetta79/607c0303095c927ca112bf8e

Dimitrios Kanellopoulos

@basetta79 you are correct. Its best GPS mode.

However I can see that your signal is very low. AGPS was updated 18/04/21

The signal was low from start.

I would recommend that you wait like 1-5 mins after the green arrow lock happens.
"

Specifically you started with only 6 visible sats (8-12 is good ).

This can happen becasue the starting conditions were hard and youi did not wait so long.

So imagine the watch barely has a good GPS lock to start, and you enter hard terrain. Then it wont have the time to recover.

Also try GPS + Glonass.

basetta79

@dimitrios-kanellopoulos believe me: yesterday I synced before the start, waited for more than 10 minute (I was waiting for a teammate ) with the hooked gps and then I started my activity. This time I was using only GPS but the previous day the situation was as bad as yesterday with the Beidou configuration. Can’t understand

Edit: this was saturday
https://www.suunto.com/move/basetta79/607ae8ef095c927ca10bc599

surfboomerang

@basetta79 Wild guess…

I noticed a lot of tree cover on the east and west side of your route where you lost signal. The on the other side is surrounded by mountains. If I look at the satellite data from yesterday morning It shows me this picture in your neighborhood:

Could it be that there are too few satellites directly above you? Most of the satellites appear low above the horizon.

basetta79

@surfboomerang said in GPS problems with my S9B:

@basetta79 Wild guess…

I noticed a lot of tree cover on the east and west side of your route where you lost signal. The on the other side is surrounded by mountains. If I look at the satellite data from yesterday morning It shows me this picture in your neighborhood:

Could it be that there are too few satellites directly above you? Most of the satellites appear low above the horizon.

I live close to mountains. The point is that previously I had an Ambit3 Vertical and later a Spartan Ultra. Both the watches never had issues. Moreover I bought the 9B 3 months ago and so a friend of mine did. He never experienced any problem with his 9B. From what you can see from your satellites map, which would be the best configuration you suggest?

Dimitrios Kanellopoulos

@basetta79 in practice the s9 should have much better GPS than the SSU

basetta79

@dimitrios-kanellopoulos I never ever had any kind of problem with the SSU. (And to be fair, I never synced before activities). It was perfect. This 9B was ok until 2 weeks ago, then the problems appeared

surfboomerang

@basetta79 Maybe you can play a bit with this site to see if it gets better if you try GLONASS, GALILEO or BEIDOU at the time of your next activity

https://www.gnssplanning.com/#/skyplot

surfboomerang

@dimitrios-kanellopoulos Is this because of antenna design or chip? Or both?