[maemo-users] [maemo-users] Metal case for Nokia 770

[From: George Farris]

On Tue, 2006-11-07 at 23:55 +0300, Igor Stoppa wrote:
> On Tue, 2006-07-11 at 17:39 -0300, ext Adilson Oliveira wrote:
> > Igor Stoppa escreveu:
> > > On Tue, 2006-07-11 at 22:16 +0200, ext Laurent MARTIN wrote:
> > >> http://shop.brando.com.hk/bwmetalcase_details.php?i=74
> > > 
> > > Good idea, but I would like to know what's the radio efficiency
> > > considering the metallic shielding :-/
> > > 
> > > 
> > 
> > It's aluminium so this should not be a problem.
> 
> True, still the original cover is mostly alluminum and plastic, but it
> is designed so that it does not interfere with the internal antenna.
> 
> Theroetically the performance should not be significantly affected,
> since the permeability of aluminum is roughly the same as the air,
> however it might have some impact on battery life if used from within
> the box, especially closed.
> 

Unfortunately this is not true.  The performance of the cover does
degrade the signal somewhat.  I can consistently get a good signal from
my sundeck with the cover off but put the cover on and it is not true.

Next time I'm in the shop I'll check it with a field strength meter.