On Sat, Jul 24, 2010 at 08:17:02PM +0200, Sylvain Munaut wrote: [...]
> OTOH, as you said creating a brand new board based on those chips
> would be a loss of time.
Agreed.
I also believe that it is very hard to make a significantly cheaper design,
if you factor in the R&D cost, the small quantities that you'll be building,
etc. You might end up with let's say 500 USD - but you will not be able to
build a USD 50 board that has a wideband receiver with high dynamic range
to capture the full GSM900 band...
So if you want to work on a single-ARFCN solution, using one of the
Calypso/Iota/Rita phones is definitely sufficient and cheap. We have
the software to get the raw samples from the DSP, so you can run the full
airprobe code on the data that you receive.
If you want to work on multi-ARFCN, the USRP1 with a single receive-board
or a USRP2 is actually not all the expensive given the bandwidth you get from
it.
Regards,
Harald
--
- Harald Welte <[email protected]> http://laforge.gnumonks.org/
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