And in some countries (like Finland) it is forbidden to use GSM on air :(

Which is quite a big problem if we consider 2014 WGC. Anyone has a good 
idea how to implement tracking on a reasonable price without GSM 
coverage? :)

hannu
(part of the WGC 2014 organisation)

On 16.4.2013 10:17, Åke Pettersson wrote:
> Hello Jiri/Max,
> It appears that tracking by GSM is different in different areas, due to the
> GSM cover. One way to check this by testing GSM phones in the air. In
> Sweden, in urban areas, it seems that the phones can be used up to 500
> m/AGL, in low-density areas it can work at higher altitudes. In mountainous
> areas the covering seems to be better. In general, GSM is not reliable for
> tracking glider flights as the GSM cover is designed for ground operations.
> Ake Pettersson
>



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