GTA02 without battery ?
Michael 'Mickey' Lauer
mickey at openmoko.org
Mon Apr 7 13:13:42 CEST 2008
On Sunday 06 April 2008 11:43:51 Harald Welte wrote:
> On Sat, Mar 29, 2008 at 01:53:47PM +0100, Michael 'Mickey' Lauer wrote:
> > On Saturday 29 March 2008 10:04:38 Wolfgang Spraul wrote:
> > > Yes, this was one of our design objectives.
> > > However, to be fair we failed...
> > >
> > > If you power-up your GTA02 without a battery, the vibrator will not
> > > work, the LEDs will not work, and most importantly, the whole GSM
> > > subsystem will not work.
> > Bummer. Does that also mean GSM will shutdown when you change your
> > batteries while keeping the device alive with USB power?
> yes, of course. I think it is _extremely_ challenging to do anything
> but that. As we all know, the GSM RF TX is very sensitive to only the
> slightest power instabilities, since such instabilities have immediate
> effect on the RF spectrum that is transmitted (and thus have regulatory
Interesting, thanks for the explanation!
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