john wrote:
The radio's donot blep when they are turned on. The bleeping stars
about 10 seconds after it is turned on and continues to bleep at
regular intervals. and continues. I have been advised that the radios
are coded to the VIN munber of the Vehicles.

Which would normally mean it wouldn't work at all. Have got TA turned on
but you're not tuned to a traffic programme?

John