On Dec 11, 3:36*pm, Harry Bloomfield
wrote:
Gary formulated on Tuesday :

Assuming as many do today - the rear screen heater is used as the
antenna for the radio and the printed tracks on the glass are damaged,
the poor tracks will generate masses of interference when the screen
heater is turned on.

We have that problem on an ancient Skoda which does have a separate
radio aerial.

Jonathan