I can read French, but I will ask this question in English to get the facts little bit better to make it easier to answer. I don´t have much knowledge about the technique of broadcasting, so it might be a stupid question.
The question is the following. I have stayed for one night in May 2005 with the caravan at the camping in Macon (on the route back to Holland). I have tried to receive the French tv (the tv is French with pal and Secam and the receiving is with the antenna included (just like these one: http://www.kokonderdelen.nl/catalog/haaks.jpg)) but the reception was very bad (you could hardly see anything).
On other campsites the reception is average to good to excellent. Is it possible that this reception has to do with the coming of TNT, that they have reduced the power? It´s was very amazing that it was so bad there.
