> And what is a difference between TBR21 and CTR21 ? There is no difference between a TBR and a CTR. TBRs are produced by ETSI (European Telecommunications Standards Institute) who have a mandate to publish standards, not Technical Regulations.
A CTR is a TBR that has been accepted by the appropriate European authorities as a Common Technical Regulation. (CTR). Therefore, you buy the TBR from ETSI. You'll only know whether it is a CTR (Common Technical Regulation) if you see a notice to that effect in the Official Journal (OJ) of the European Communities. So far, TBR21 has not yet received the required approvals from the appropriate authorities. It should happen "soon". A number of national authorities in the European Union apparently is accepting equipment that meets the requirements of TBR2, even if it is not yet a CTR. I have seen any number of announcements on TREG to the effect that this or that country will accept equipment that conforms to TBR21 but do not know about the legitimacy of those statements. That is, if you try and import a piece of equipment into one of the member states and they won't accept it, can you go back to them and say "BUT IT SAID SO ON TREG ?" I believe that what is really happening is that some European Notified Bodies, fed up with the dilly-dallying, will allow you (if your equipment meets TBR21) to affix the CE-marking with their Notified Body number. I assume that happens with the tacit approval of the local Competent Authorities. Any other local authority can take exception to that use of the CE-marking. If they are wise, they won't. Hope I have managed to confuse you at a higher level. Ciao, Vic
