So we have a gutter mounted antenna that was mediocre at the best of times, and has now broken so I am looking for a better type of antenna for our 1995 hiace camper.

We only really use it on the road while travelling, yet outside of the city I have to use my phone to connect to RNZ (the only station worth listening to) then bluetooth it to the car radio. 

It would be nice to have a better car antenna to directly pick up the signal. Surely there has been some new tech n the last 20 years.

I have a glass roof panel, I could stick an internal antenna to, and tried one, but it seemed useless. That would be aesthetically the best solution instead of making more holes in the van.

Any ideas?