My NAC172 "drops out" of BBC HD radio (either iBBCRadio2 or 3 ) within 15 minutes or so some evenings. During the day, it doesn't disconnect.
My PC has no such problems, staying connected to Radio 3 on BBC Radio Player in HD-mode - it works all day and all night.
I've contacted Naim to ask whether the buffer size on the NAC172 needs increasing by a software update, to cope with the increasing vagaries of internet traffic and bandwith (whatever that is), but I'm really just guessing at a solution. Is this a problem that affects other people?
I prefer listening the Radio 3 on the internet because I now find the FM broadcast a bit clangy and rather like listening to "Medium Wave" in the era before electricity.