FC project direction

Das Signal das.signal at freecalypso.org
Wed May 27 08:58:58 CEST 2015


On Wed, May 27, 2015 at 12:03:41AM +0000, Spacefalcon the Outlaw wrote:

> DS, would you be able to hack on a GTA02 given just a bare board
> instead of a complete phone?  The main difficulty with using a bare
> board (at least if I had to do it) is that there is no battery holder,
> and I don't really know how one could connect a battery or a lab bench
> power supply to the battery contacts on a bare GTA02 board - but
> perhaps for you it wouldn't be as much of a difficulty as it is for
> me?  The internal antenna is also missing (and again no good way to
> hook one up in the absence of a case to hold it in place), so if one
> wishes to connect to a real GSM network, an external antenna needs to
> be connected to the MS-147 connector (same as on C1xx and Pirelli, it
> must have been used for the original production line calibration) -
> but if you are connecting to USRP+OpenBTS, you use a coax connected to
> that MS-147 anyway, don't you?

Hi Mychaela,

A bare board would do in theory, as I have a power supply that can
provide up to 1.5A (should be sufficient) on any voltage from 1.5
to 12V. Soldering the + and - to the board should be no big deal.

Regarding the antenna connector, I don't have one at the time, but
SMA to MS-147 is in stock on mouser, so acquiring one will be possible.

> > It's really great to see this project develop, and to get such 
> > detailed status reports and such; thanks so much Mychaela, as ever, 
> > for all your work. I find your dedication and perseverance towards a 
> > noble cause inspiring.
> 
> Thanks for the compliment. :-)

I second Nick -- your dedication and will to complete the project
is indeed inspiring :)

--DS


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