To all Mazda driver who may experience loss of frequency IE DAB radio [/b]going on and off fro no reason in the area you know has a good signal , or on TomTom radio lost of frequency's showing on screen. The very cheap dash cameras that you find on ebay computer fairs and Facebook have the same radio frequency as the Mazda radios and blocks the signal. if you have on throw it out the window or sell it to someone with a pre 2009 car with basic radio. hope this helps someone who has been scratching there heads.
