i’m working on a GSM Analyzer hobby project (that is not written in
ruby, sorry for that )
and am looking for some recordings of GSM downlink channels in foreign
countries.
i already have recorded germany’s D1 (900), D2 Vodafone (900) and O2
(1800).
(see http://g3gg0.de/ for videos etc)
would some of you be so kind and upload some 5 seconds of a GSM channel
in their countries, so i can test it with different providers?
the channels are usually from 935 to 960 MHz with a 200kHz channel
sacing. a sampling rate of somewhere around 2MHz (oversampling factor 8)
or above would be very nice.
more than 5 seconds would just cause a too big file, but if you dont
care about the size, it would make me even more happy
it would be really cool if some of you could do that
It’s probably better to ask in the airprobe mailing list.
Also in their old website there are some dumps from England…
From my side, I have dumps from all the GSM Austrian operators on a
per-channel (200KHz) basis (with 112 decimation factor).
Gsm-tvoid and gsmdecode do a good job in demodulating and decoding…
Anyway, looking forward to trying your tool…
It’s probably better to ask in the airprobe mailing list.
Also in their old website there are some dumps from England…
thanks for pointing me there. will try to find their page
From my side, I have dumps from all the GSM Austrian operators on a
per-channel (200KHz) basis (with 112 decimation factor).
that means, you have a (complex) sampling rate of 571428,57…Hz right?
would you mind to upload some of them?
Gsm-tvoid and gsmdecode do a good job in demodulating and decoding…
i implemented everything on my own. without looking deeper into any
other project.
Anyway, looking forward to trying your tool…
well, if you can help me out with some dumps, i would send you the tool.
but its a windows app, using C#/.NET - still interested?
hm but… why are you all using such strange sampling rates?
i mean… i’ve seen decimation factors of 64, 112, 118, 128…
is there a specific reason for using 112 or 118?
thanks
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