Archived posting to the Leica Users Group, 2014/07/01

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Subject: [Leica] Firmware M240
From: john at mcmaster.co.nz (John McMaster)
Date: Wed, 2 Jul 2014 01:01:32 +0000
References: <53B3538B.9050708@threshinc.com>

I can walk outside (open to the sky) for an hour and the GPS does not lock 
on :-( This both before and after the 2.0.1.5 firmware....

john
________________________________________

Nah, John.  GPS satellites do not discriminate by hemisphere.  They are
in orbits inclined about 55 degrees to the equator, which means they get
farther south than even you. :-)  And farther north than most
Canadians--which reminds me, to all Canadian Luggers, hope you had a
Happy Canada Day!

Seriously, if you've done the firmware update, it may have reset the
last known position of the camera (to a default of Wetzlar, maybe?).
Which means it has to "see" at least four satellites clearly before it
knows where it is again. Usually there are 7-9 satellites visible at any
one time, but they transmit on frequencies that are absorbed by things
that contain water (ie trees, human bodies, etc.), not to mention
building walls and such. So you need to have a clear view of some open
sky for its initial setup, and the more, the better. After that, some
GPS' will use the last known location as an initial guess in its
algorithm, which can help fill in the blanks when less than four
satellites are currently visible. Others don't, and these can be
especially difficult to use indoors, in urbans downtown areas, or in
areas with a lot of RF interference.

Take the camera outdoors where you can see a lot of sky, and wait a few
minutes, and I suspect all might be well again. I remember when we came
back from a trip to Florida with our GPS. It was raining a lot, so I
didn't take it outside to reset its location.  Then we had to go to a
friend's country house which is so far out in the sticks that its Zip
code is EIEIO.  The GPS "remembered" its last known position, and
insisted that it was in Florida for about 15 minutes, until it saw
enough satellites to realize that it was now a bit north of Seattle.  :-)

--Peter

----------
 > Yes, but you are in the northern hemisphere which has quite a few more
 > satellites ;-)
 >
 > john
 >
 > ________________________________________
 >
 >
 > On Jul 1, 2014, at 3:34 AM, John McMaster wrote:
 >
 > > I find the GPS very unwilling to lock a signal in Wellington, will be
 > > curious to see how you find things across the ditch....
 >
 > GPS worked pretty well here even before the new firmware.
 >
 > LiveView no longer works on my M ;~(
 >
 > Regards,
 > George Lottermoser
 >
 > http://www.imagist.com
 > http://www.imagist.com/blog
 > http://www.linkedin.com/in/imagist


Replies: Reply from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] Firmware M240)
In reply to: Message from pklein at threshinc.com (Peter Klein) ([Leica] Firmware M240)