No Blackmagic antenna-with useful adaptation for DAB.

These are a simple quarter-wave radiator whose bandwidth using the lower disc enlarge was to be useful to the whole DVB-T band.
That actually works as expected, but prediction is necessarily a good metallic underground as "ground plane".

But to be useful to the DAB radio frequency part of the spectrum of the radiators is too short, the indication it should work for DAB radio so not true!

When looking at these antenna buys with the foresight to receiving radio needs to be adjusted to the spotlight. That is straightforward and easy to do by removing the top cover of silicones rubber and introducing an aluminum or copper pipe with a length of about 34 cm.
After this intervention that thing good for DAB radio runs but not for DVB-TV.

Please excuse my beschraenkete knowledge of the German language, Dutch is my native language.
M.fr. Greetings,
Denis Loos