radio reception

The DAB reception on my 2018 C43 convertable is very poor and cuts on/off all the time whilst driving in different areas due to lack of signal strength. The Mercedes dealer says that there is nothing wrong with the car and Comand radio unit, and adds that most Mercedes cars have poor DAB...

Hi everyone My E240 uses the rear window heater as an aerial but unfortunately the AM reception is poor. So as far as I can see I can buy a new radio unit that has DAB or live with it as it is. I was just wanting to hear from others who may have experience or knowledge of this. - Will DAB...

My radio has always been poor reception . Connections of ariel at back are ok ,as are fuses . Is the ariel amplified ? if so where is it . I think the actual ariel is in the back hatch door , am I right ? any thoughts please . I have 2003 c class coupe 1,8 kompressor