I use a Drive Transmit Pro A2DP bluetooth adaptor so that I can stream music from my phone over bluetooth.
The device plugs into the cigarette lighter socket and can transmit over FM but also has aux-out.
On my old toyota aux-out and fm were both noise, and I could hear high-pitched whining with the pitch dependant on the engine revs.
On my Mercedes vito, the FM is pretty good but the aux is worse than before.
Aux-in from my daughters ipod is without noise.
What might the cause be? Ground earthing loops? Anything I can do to stop it, short of an isolation transformer? Extra supression capacitors across the cigarette socket?
When my wife gets back I'll try an external 12V supply to see if that stops it...
The device plugs into the cigarette lighter socket and can transmit over FM but also has aux-out.
On my old toyota aux-out and fm were both noise, and I could hear high-pitched whining with the pitch dependant on the engine revs.
On my Mercedes vito, the FM is pretty good but the aux is worse than before.
Aux-in from my daughters ipod is without noise.
What might the cause be? Ground earthing loops? Anything I can do to stop it, short of an isolation transformer? Extra supression capacitors across the cigarette socket?
When my wife gets back I'll try an external 12V supply to see if that stops it...
