Franz GrafMar 14

Just a little one and a half hour walk nearby before it was supposed to be raining (and rugby starts).

It was a nice walk and good to be out. Strangely, my old GPS device refused to get a location despite having lots of satellites. Just 10min before coming back (after a couple of restarts and taking the batteries out and back in) it worked.

Fortunately, I only had it with me to test if my heart rate monitor also connects to it.

#hiking #wandern #mountains #bayern #bavaria #lenggries

Show threadEric PhelpsMar 14
@hikingdude Probably old enough it lost the almanac and ephemeris. It can take a long time to recover from that.
Show threadFranz GrafMar 14
@ericphelps I thought about it, too. But usually (tm), I got it after 20min. But somehow not this time 😕
Can it take soooo long?
Show threadEric PhelpsMar 14

@hikingdude I wonder if constantly moving and walking around hills that block half the sky makes it take longer.

There's an awful lot I don't know about GPS.

Show threadFranz GrafMar 14
@ericphelps 🤔 moving in forests probably didn't help. Despite showing quite some strong signal to several satellites.
Show threadTim StantonMar 14

@hikingdude
I'm curious if you also used a navigation app on your phone and how fast the response time was on that.

@ericphelps

Show threadFranz GrafMar 14
@TimKStanton @ericphelps
I tried that, too to check:
But right after opening a GPS test application, I had 2m accuracy.
Show threadEric PhelpsMar 14
@hikingdude @TimKStanton The advantage of a phone is that it can download the almanac over the network to allow for very fast positioning. Can your offline GPS be updated from your home computer in a similar way to get the almanac and ephemeris?
Show threadFranz Graf
@ericphelps @TimKStanton
It's a Garmin Dakota - pretty old. I'm not aware of this capability. Maybe I should just have waited 20min or just turn it on already at home
Mar 14 at 5:27pmWeb