On Friday 18 August 2006 23:29, Ulrich Kunitz wrote: > On 06-08-18 09:12 Johannes Berg wrote: > > > On Fri, 2006-08-18 at 01:29 +0200, Ulrich Kunitz wrote: > > > Or are here people, who > > > really want to freely transmit on all frequencies their RF might > > > be able to generate? > > > > Yes :P > > Some amateur radio people asked me about extending the spectrum a bit to > > the top (apparently they're allowed to use the band just above the ISM > > band as well). > > I had some discussions with radio amateurs about the RFs in the > ZD1211 devices. Even if I could transmit in their required bands, > the RFs are so WLAN specific, that they don't fulfill their > requirements. It's really funny, if somebody explains to you that > these chips are of extremely low quality. I always try to explain > to them that the complete devices are sold for only 17 Euros > including VAT. You cannot expect for this price the quality > required for long range transmissions at these high frequencies. > > I support the idea that radio amateurs should create their own > patches if they need it. Supporting the frequencies in the > interface, is a typical feature used by less than 1% of the user > base, but would cost more than 80% of the effort. We should also not > do anything, which would raise the impression, that we want to > ignore regulatory rules.
I second that. We should not allow to drive devices outside of the specs. If someone wants to do this, he should be able to apply a one-liner patch to tune to some different frequency. ;) > > However, I don't think we need to cater them in the API. I think they > > ought to be able to live with kernel patches since we don't really know > > how far up the frequency on say the bcm43xx can go anyway before the > > card breaks/malfunctions. > > Do they have a separate RF? They data sheets are usually > available, even if the not always explain the register > programming. We currently know 6 different radio chips used by bcm43xx: http://bcm-specs.sipsolutions.net/RadioID AFAIK the chip is from broadcom, too. I don't like to check now, as that would require to disassemble my AP and look at the chip. ;) But I'm pretty sure. There is no datasheet available for the chip. At least nobody was able to get or found one so far... . -- Greetings Michael. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
