Hello Neil, remember that I said about adding traffic and suddenly all disappear? I found the real problem, it is related is not the cable compatibility but internal problems of electronic cable, simply changed and he recognized RDS perfectly. Thanks for the comments above, I checked all the addresses and they helped me a lot and help those who have doubts about the internal behavior of these cables and their original specifications GTM Traffic.

To repeat: It works perfectly in a GTM25.


Hug.