You can find a wording in most such regulations that if TPC is not supported, the maximal TX power must be reduced by 3 dBmW. Hence in all such cases, the entries in db.txt contain 3 less than the maximum. If, on the other hand, you know of a country that specifies that devices lacking TPC may not use the band at all, all such band entries must be omitted (commented out along with a URL). On Thu, Jan 4, 2024 at 6:59 AM Chen-Yu Tsai <wens@xxxxxxxxxx> wrote: > > Hi folks, > > I wanted to clarify the current state of things. > > As far as I know the kernel doesn't have facilities to support TPC or > transmit power control, nor does the wireless-regdb database. And so > in the database we would either omit rules that require TPC, or include > alternative rules (as specified by local regulations) not requiring TPC. > Am I right? > > This came up recently with regulatory changes for Singapore and Armenia. > > For Singapore [1], the 5.250 – 5.350 GHz range has provisions that allow > usage without TPC at a lower power, but the 5.470 – 5.725 GHz does not. > > For Armenia [2], the updated text (translated by Google Translate) as I > read it requires TPC for all 5 GHz channels. > > > Thanks > ChenYu > > [1] https://www.imda.gov.sg/-/media/imda/files/regulation-licensing-and-consultations/ict-standards/telecommunication-standards/radio-comms/imdatssrd.pdf > [2] https://www.arlis.am/DocumentView.aspx?DocID=181829 >
