QuickGPS data longer then max. 3 days ahead?

[TheWizzard2203]

Hi,

I was looking for a way to extend the QuickGPS data for a longer time. Standard it can be downloaded for max. 3 days. But is there a way to extend this to a week or so? Maybe through a registry tweak?

[TheWizzard2203]

A post for testing (can be removed)

[Theo001]

Doesn't make sense, data is after 3 days outdated.

Theo

[leez]

Coordinates of the satellites on the sky changes every 3 days or so...

[petervbeck]

i can understand that the data has to be updated....i've got no problems to update via quickgps regularly,
but the strange thing is, on my brothers kaiser quickgps data is valid for 5 days. what's the difference ?

[prodinho]

I also read somewhere about 10days quick QPS data..

[TheWizzard2203]

Indeed and that's why i opened this topic

[soardiac]

i would also like to know how the kaiser gets data that is longer valid than the data of my artemis.

what i see is that my (german) kaiser has QuickGPS v1.00 (Build 615.715) installed while my artemis (meschle's lite rom) uses v1.00 (Build 327.716). maybe the newer build asks for longer-valid data? has someone tried this build on a p3300?

[namco]

My TOMTOM GO keeps data for 7 days. I guess it depends on where the data is fetched from? Just a guess.

[gertaap]

My TOMTOM GO keeps data for 7 days. I guess it depends on where the data is fetched from? Just a guess.

Hi all,

it does not matter where the data is fetched from, because it will be the same data. The GPS satellites transmit the time of their build in atomic clock, and with this data, your receiver can calculate its position. The point is that the receiver needs to know what satellites to look for. This is where quickgps comes in. Instead of having to wait for a slow download of data from all the gps satellites in sight(cold starting) which would take up to minutes, that same data is taken from the internet from some server(which has it from the same satellites of course). This saves you waiting time, and it will be more effective when the data is very fresh, and it will loose its value over time. After some days, the positions of the satellites has changes that much, that this data can not be used anymore to "know" what satellites to look for first.

So in short: the more recent the data the quicker the first fix! No use in data older than a couple of days.

And: just using your receiver often, does exactly the same: it keeps recent data due to the connection with the satellites, so when using gps often (always), you don't need quickgps at all.

[soardiac]

this is good and all...but my kaiser does very well with the 5days-old data, so maybe my artemis could also handle that data. i just wonder how i can make QuickGPS on my artemis fetch data for the next 5 days instead of 3 days. or even better how i can configure that freely. if a chosen number makes sense have to be shown by testing.