Aerial placements : GPS + DAB

[Gebbly]

I'm looking to get a Z4M and currently trying to solve in my head what would be involved in updating the stereo system to something with satnav and DAB amongst other things. I'm currently leaning to replacing a Business stereo with something like
Pioneer AVH-Z7200DAB
or more likely
Erisin ES8588U

Whatever I will settle on will need GPS and DAB aerials connected in one way or another.

Does anyone know where the GPS aerial runs in cars with the oem satnav?
Are there any particular places that are good to run GPS and DAB aerials in the car?

 

[WavyMcGravy]

I recently installed a DAB head unit in my E85. I bought one of the windscreen stick on aerials, but didn't fancy sticking it on the windscreen. So I opted for behind the passenger seat, and ran the cable under the door cill. There was even a little removable cover hiding a suitable earthing point. Works fine.

Can't help with the GPS I'm afraid.

 

[Gebbly]

Thanks WavyMcGravy, thats a good idea to hide a windscreen antenna.

Upon further reading it would be nice if I could make use of external antennas for the signals (FM/AM, DAB, GPS) and in particular the existing antenna position in the body work. I came across Rally-Chris' comment in https://z4-forum.com/forum/viewtopic.php?t=110660
And the problems with the aerial amplifier using a frequency filter.

I'm wondering if I could replace the current aerial with something like
https://incartec.co.uk/product/GPS-DAB-AM-FM-Combiflex-car-audio-roof-with-GPS-DAB-AM-FM-extensions-70-915K
Then I could plug the AM/FM lead into the diversity as shown in
https://zroadster.org/threads/e85-radio-reception.15364/#post-290565
I *think* that would mean the AM/FM circuit would be exactly as it was before but now I would also have a GPS and DAB leads available. These I could run to the head unit.