Camper 760LMT-D loses signal

My venerable Camper 760 does not like my new Mercedes motorhome and loses the satellite signal frequently. I am positive it is because of the heated windscreen acting like a Faraday cage and it’s preventing the signals to come through.

is there any way to boost the signal, or a way to allow it to function? My old Streetpilot 111 of 20+ years ago had an aerial that could be removed and an external aerial attached to it that sorted a similar problem I had.

Is there anything similar I could consider? Or is it a lost cause? The standard Merc satnav is crap by the way.

I am assuming that simply purchasing the latest version of Camper 780/790/whatever will result in the same issues?

I’d welcome your thoughts. Thanks.

 

The screen is very well equipped with heating elements sadly. All is not lost though as I can also use my iPhone hooked up to CarPlay and then use Google maps, but it’s not as ideal as the 760 and as convenient to route.

in hindsight when I had a screen replaced under warranty last year I should have requested a cheaper clear version (maybe I’ll have a stone hit me and crack it?