csabyke írta: Egy jellegzetes sípoló hang aktiválja és bizony az még mind a mai napig ott figyel a vehrkersservice előtt és után.Ezzel nem az RDS TA-t kapcsolják (DTMF)? (Az RDS kóder a jelzésre aktiválja a TA-t).
Fülelj az Ö3-on, a Radio Burgenland/Steiermark/Niderösterreichon, vagy akár a németeken...
http://www.radioandtelly.co.uk/rds.html
"If you listen to local radio, you may hear a series of three tones or beeps played before and after travel and traffic reports. Many think that these tones are the RDS flag, but they're not - although they are associated with RDS. In order for a transmitter to know that Travel is being broadcast, the radio studio has to tell it, by switching on the TA flag. As studios are often some distance from the transmitter, the studio play a recording of three DTMF tones as part of their travel service. A box at the transmitter site listens for those tones, and when it hears them in the programming, it turns on the Travel Flag. This concept was designed in the 90s by the Engineering team at Essex Radio, in Southend-on-Sea, and has since been used at many of the independent local radio stations across the UK."
