On 11/12/2012 17:08, charles wrote:
In article
,
Jonathan wrote:
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.
when I think about it, I had that problem on my no-so-ancient Citröen (only
10½ years). This had a separate roof aerial at the rear of the car.
Replacing the aerial cured the problem. It had broken internally - probably
because it got bent rather severely when I carried sheets of plywood on the
roof bars.

We have a roof aerial so I shall check it properly now you have said that.