Re: "International" channels on a CM9

On Apr 24, 2008, at 7:42 AM, AT Matik wrote:
>> I have an embedded system that contains a Wistron CM9 802.11 card,
>> purchased in the US.  After extensive testing in the US, the unit is
>> now being installed in Europe, where 802.11b/g channels 1-13 are
>> employed.  How can I enable channels 12 and 13 on this hardware,  
>> which
>> currently seems to only be able to use the "US" channels, 1-11?

> on some cards it is possible to achieve by setting the country code  
> at boot
> time (sysctl in loader.conf) on others not

sysctl shows countrycode=0, regdomain=0.  I can change the countrycode  
to other (valid) settings, but I have a feeling that setting that at  
runtime is already too late.

> there is a way again on some cards to tweak the card's eprom memory  
> to get the
> extended channels

It was my impression based on the research I did before purchasing the  
card that there aren't multiple SKUs representing hardware for  
different regions -- just the one card which can cover the full range  
of frequencies.  Is that not the case with the CM9?

> you can try attached exec which should run on i386 at least on 5.3  
> and perhaps
> 6... (i don't remember)
>
> in order to do it you need to boot with the card installed in single  
> user mode
> and after setting reboot to see if it works

If I do end up having to make an EEPROM change, single-user mode isn't  
an easy option in this case.  The hardware is built into a  
weathertight box mounted on the outside of a structure; there's no  
console.  The system boots via PXE and mounts its root filesystem via  
NFS, though, and I have remote power control as well, so I have fairly  
complete control over bootup.  Is single-user strictly necessary?

++J

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