On Thursday 11 Sep 2003 2:44 am, Bobby Bounds wrote:
> The ABI and the ABO are the SAME radio. So, I'd think they'd handle cold
> equally well. The plastic box the ABO comes in is more airtight than the
> ABI case but it is academic because no one would stick an ABI out in the
> wind and rain (they'd stick it in a NEMA box).  If you put an ABI in a NEMA
> box it may handle the cold better than an ABO for all I know.
>

Bobby,

Clearly the airPoints are built on the same PCB. However choice of components 
makes a difference. You can get the same chips in different environmental 
specs. The hardy components cost more and seem an unnessasary expense for an 
indoor unit. With problems such as loss of assosiation caused by temperature 
it could pay to be careful. airBridges tend to sit in lofts and windows and 
get hot there so perhaps they ought to be more like the outdoor units.

The way to tell is to put the two boards next to each other and compare the 
component numbers. Little letters on the end can indicate a big difference in 
environmental performance. Even which manufacturer supplied them makes a 
difference. We had a huge problem with the way Seimens implemented a PIO chip 
we used. It was totally intollorant to electrical noise and made the unit 
unreliable in the field. Switching to NEC chips solved the problem 
immediately. The saving on the Siemens chips for the whole production run was 
not worth the problems we had with just one installation.

Make extra sure you do not compomise quality when seeking lower cost.

Regards,
Wayland.


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