Hi KP on 12.10.2014 21:18, kp kirchdoerfer wrote: > HI Erich; > > I've visited Wroclaw the last days and had no time/access to respond earlier.
Breslau, interesting, I have no clue about Poland. > > Am Freitag, 10. Oktober 2014, 15:21:43 schrieben Sie: >> Hi KP >> .... > > But pls explain to me, what's the benefit - I'm ignoring all this just by > lack > of knowledge. OK, many Atheros based cards are delivered with an EEPROM country code of 0x00, e.g. unspecified. The idea is probably that the EOM's should insert their country specific code there. The driver is hard coded to insert 'US' if it sees an unspecified country code, which limits the chip to channels 1-11 but allows for higher (and illegal) TXPower. In most European countries we are allowed to use channels 1-13 but at lower transmit power levels. The way the atheros board is initiated is that later country selection can only _add_ limits, but not widen them. So if you insert a country code of 'DE' it will not AND this with the full register set, but with the previously set limits, which in fact will result in the above US limitation of channels and the DE limitation of power, this will make it impossible for you to us an AP which is set correctly to channels 1-13. The same is valid for the 5 GHz channels. I ranted about this on the wireless driver list, but could not get through. If you search the net you will find lots of similar woes about this issue like for example at https://bbs.archlinux.org/viewtopic.php?id=124574 So I decided to patch the driver to get a neutral behaviour at initialization and then be able to set the correct country code. This is IMHO the most sensible aproach. cheers Erich
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