Fri 12 Apr, 2019 2:40 pm
Fri 12 Apr, 2019 5:54 pm
Fri 12 Apr, 2019 6:14 pm
Fri 12 Apr, 2019 9:43 pm
Sat 13 Apr, 2019 4:13 am
wildwanderer wrote:Thanks Guys.
Good to hear it's not expected behaviour.
I spoke to Garmin this afternoon. They suggested a factory reset and then leave it under open sky for 20 mins to make sure the GPS calibrates correctly. So I'll give that a try.
Sat 13 Apr, 2019 8:36 am
wayno wrote:it needs to download a fair bit of data to set its location corrrectly when it starts, the SPOT was also useless if you moved too early when turned on
I found the inreach mini far ore reliable than the SPOT for fixing a location, the SPOT would always fail under any canopy, i've had the inreach work in a canyon...
Sat 13 Apr, 2019 8:49 am
Sat 13 Apr, 2019 9:07 am
wayno wrote:that was for getting an accurate position for tracking or sending my location
Sat 13 Apr, 2019 9:14 am
Sat 13 Apr, 2019 9:20 am
Lamont wrote:stand stock still antenna up
Sat 13 Apr, 2019 10:34 am
ribuck wrote:I'm generally pleased with my InReach Mini, except for a couple of issues.
(1) The GPS. If I've moved a significant distance (e.g. driven a few hundred km to a bushwalking location), the first GPS fix after I turn it on always takes about 20 minutes. After that it's fine..
Sat 13 Apr, 2019 11:40 am
Sat 13 Apr, 2019 5:11 pm
wildwanderer wrote:If you then turn it off and turn it on a second time (while still in same general area) have you found it takes another 20 minutes?
Sun 14 Apr, 2019 5:07 am
Sun 14 Apr, 2019 8:29 am
wildwanderer wrote:I wonder if its only the iridium network that the inreach can contact for gps fix... that would explain why phone gps is superior as presumably they can lock on to any satelite offering a gps relay.
Sun 14 Apr, 2019 9:33 am
Warin wrote:wildwanderer wrote:I wonder if its only the iridium network that the inreach can contact for gps fix... that would explain why phone gps is superior as presumably they can lock on to any satelite offering a gps relay.
Think you will find the iridium network will not give the information required to get a location fix. So I suspect that the inreach is getting its location from a GPS network and then using the iridium network for communication only.
Sun 14 Apr, 2019 11:17 am
wildwanderer wrote:I’ve been doing some research and I think an explanation may be the number of position satellites the inreach can communicate with. My late mode android phone can use GPS, Galileo, BDS and GLONASS satellite constellations to gain a position fix.
So this is likely why my phone gets a location fix significantly quicker than the inreach mini.
Sun 14 Apr, 2019 12:32 pm
Warin wrote:The phone can use the cell phone signals to get a rough location, and that helps. Turn off the cell phone connection (plane mode) and it will probably take longer.
Then the movement for the previous location. The GPS expects to be in the same general location as the last time it was used and therefore expects certain satellites to be present. Not finding them means it has to start searching ... my old GPS has a menu function that I can use to tell it I am in a new location .. might even have one where I can tell it the general location .. that speeds acquisition. Think my phone may be doing the same... generally I have the location service turned off.
Comparing apples and apples is not easy with these things .. needs lots of understanding of what is going on.
"The time required to acquire satellite signals varies based on several factors, including how far you are from the location where you last used your navigation device, whether you have a clear view of the sky, and how long it has been since you last used your navigation device. The first time you turn on your navigation device, it may take several minutes to acquire satellite signals."
Sun 21 Apr, 2019 8:23 am
Sun 21 Apr, 2019 12:56 pm
wayno wrote:i'm windering about the faster gps fix with your phone..
if you're in cell phone coverage, your phone can use cell towers to fix its location faster...
phones will use whatever networking connection they have to fix the location
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