Firstly, just because I have not registered does not mean I have not been adding content to Wikipedia for some time, and I am aware simply from reading Wikipedia pages what the general structure should be. And the credibility of the content I add should stand on its own without my having to register first to gain credibility from others. I don't provide incorrect information. 

 And the term "DAB" is really just synonymous with the Eureka 147 system now. The term used to be used in America, but they seem to have stopped using it now, probably because the acronym is the name used for the Eureka 147 system. So I don't think systems used in the US are relevant on a page about DAB - they should be linked to from a page about "digital radio". 

 You also have to consider that DAB has only started selling in any quantity in the UK and Denmark, and both of these countries provide audio quality inferior to on FM due to the bit rate levels used. Furthermore, because of the inefficiency of the MP2 audio codec, which has to be transmitted at very high bit rates to match FM-quality (224 kbps is usually equated to FM-quality), DAB basically sounds worse than FM in all countries - with the possible exception of Estonia, where the handful of stations are transmitted at 256 kbps. 

 So I'm afraid that continually deleting the fact that the audio quality on DAB is worse than on FM is in actual fact simply censorship.