sony radio auto tune ?

Can anyone tell me how to stop the radio re-tunning itself .I pressed and twiddled every button and carnt bloody find it

AF (perhaps better identified as Alternate Frequency Switching), automatically returns your FM tuner to the strongest signal carrying the program you were originally listening to when the original broadcast gets too weak to receive clearly! This little bit of magic is particularly useful when you’re traveling longer distances by car. The way it works is this: The original RDS broadcast would contain a coded list of all the alternate frequencies carrying the same information (NPR or syndicated shows are prime candidates here, of course). When the original broadcast faded into uselessness, the RDS circuitry would instantly search all the alternate frequencies for the strongest, most useable signal and automatically switch to it without any work on your part! In theory, you could drive the width of the country without retuning your radio at all. How’s that for convenience?

Any help??

Tryed that and just keeps jumping round stations . It may just be a faulty radio ,but it won't hold to a station even if not traveling

have you set the station as a preset?