If it's a decent one it might be worth contacting the maker and ask if there is an update that can be applied. Or a car audio shop might be able to help.
A new car probably. The thing is completely tied in with everything else on my (5yo) car.
Sadly true.
I found that every time it lost signal it just stopped, and didn't restart when regaining signal, thus necessitating manual intervention to do so, unlike a 'normal' radio. This gets old very quickly.
Are there any of those left?
I will investigate. I had assumed it is DAB and not DAB+, but we are talking about a 10 year old unit.
I think there are. Rather than my normal do-it-myself, on that occasion I decided to have professional fitting (which turned out to be not very professional). The unit sometimes (but not infrequently) reboots and interrupts my quiz programmes at critical points, so I went to go back – only to find the shop closed down just weeks after purchase (and of course they didn't tell me beforehand).
So did I, but my frequent travels over regular routes suggest FM coverage is getting worse. There are places I can get one but not the other (either way around) and complete dead spots, when FM alone used to be fairly reliable. I know we've had this discussion before, but I am not an SFN believer.
Yes, there are some mobile data coverage black/grey-spots in a few of the villages round here which can be a problem when streaming live sports coverage. But OTOH DAB radio coverage is also patchy in town so it can sometime be a constant battle switching between the two to get continuous coverage as I drive around. But OTOOH I was able to suspend listening to live TMS today while I watched the British Grand Prix then caught up with the end of the test match on BBC Sounds, chase-playing two hours behind live. So the various platforms offer different advantages as well as having their own disadvantages and it helps to be flexible.
I rather think it is aerial performance/receiver sensitivity on FM that is worse. No-one is deliberately degrading the transmissions (on FM at least; AM is a different matter).
That is a possibility, perhaps I should investigate the integrity of the wiring (particularly the earth).
Likely the receiving antenna(s) are optimised for the DAB VHF wavelength, ie shorter than the FM VHF wavelengths? Most car antennas are now amplified rear windscreen/side window heating element style I believe. Few, if any, have conventional whip antennas. Even the helix wound stubby slanted styles never worked well 30-40 years ago for FM.
My unit has separate aerials for DAB vs everything else. Do car radios have an internal ferrite rod for LW/MW?
Pure Elan EL-10. It doesn't mention DAB+ so I am pessimistic, and can't find anything on the web. I have contacted customer services for comment.
That's good. Probably. (Some DAB aerials are better than others. The same applies to FM and AM , too). Note I was remarking on @prpr's new car comment particularly.
Acid test is to see if it receives Jazz FM or one of the other DAB+ stations.