1. Mobile Phone Aerial
2. Remote control 433Mhz is a narrow band for remote controls
3. It’s for your FM radio signal and the 12V is the signal voltage to deploy the aerial in electric antenna

Is it only doing it since you upgraded to the RNS-E? just wondered if it may be a problem with the install.

There was the same problem with RNS-D.
No connection with RNS-E installation.

RESOLVED.

I actually had faulty heating segment on the demister.

It seems previous owner threw a box into parcel shelf and edge of the box had scuffed the demister element. I've found a small scratch on glass that crosses the heating "wire", apparently, damaging it.

I've purchased Granville rear heater repair kit from Halfords and fixed it.

Now no hissing sound at all when heating is on -- checked all radio stations.

Thanks everyone.

always good when you get it fixed yourself, glad to hear it

>> Current Cars
>>
>> Audi S8 2002, 4.2, Black
>>
>> Wifes - Fiat Grande Punto Evo GP


Hi Brian,

We're in sync -- I have the same set of cars: A8 2002 for myself and Fiat Grande Punto for wife. Good approach! +++

clearly we have impeccable taste+++