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.
