Are Naim DAB modules strictly just DAB standard or also ISDB-T?

I would assume not, but as you are in Japan with a UQ2, can’t you try it yourself? Presumably, optical from a TV will do it?

Oh that does work but then you have to have the TV on. That's the whole problem. 

I forgot the UQ2 doesn't need a module. If it is quiet on the weekend, I may nip into the office and try it. Though regardless of that result, it won't tell me what the NDX DAB module should do if I bought it.

They support DAB+ and DAB

As Adam says,  Naim is DAB/DAB+ only.     World radio has gone much like the world/regional TV services, different systems.  Its a shame but each will defend & have reasons why it made the choice.     

Do you use this ISBD-T thing for stations that are unavailable on iRadio? I have yet to find a station that isn’t online too. 

So, the thing is, I am fully aware that the module is marketed as a FM/DAB/DAB+ module. I've read the same manual as everyone else. But who knows what generic capabilities the board might actually have?

Here, FM has had a stay of execution after getting to Nov 2017 with an announced shut off that never happened. The major radio stations are either FM or ISDB-Tmm with a few on iRadio. National iRadio is unlistenable. 64Kbps is the norm with 32Kbps not uncommon. ISDB-Tmm is basically a digital television broadcast minus the video multiplex so arrives as either AAC or Dolby Digital of varying bitrates all far far higher than iRadio.

As [@mention:36201736949470193] correctly pointed out, I can at least test the UQ2 since no board is needed. But regardless of how that turns out, extrapolating to the DAB board for an NDX might not be that accurate.

All this talk of radio on other threads has reminded me that I used to love radio and have no idea how it dropped off my listening habit suddenly in 2007 coinciding with a house move for no explicable reason. I think I would be foolish to invest soley in FM considering we are on borrowed time and FM signal is merged with TV signal in buildings here and there is no much high frequency crap that is audible as a result even after using the passive signal splitters required, FM is pretty hard to stand. I'm starting to remember why I gave it up...

Not like back in the UK where I had a massive aerial on the roof that looked like I was listening for aliens and got a pristine signal into my cherished NAD 402.

The FM/DAB module is a Naim designed software defined radio module so I think you can more or less guarantee that if it supported a different standard that is in use somewhere they sell product to, they would have had to have made it like that specially and would advertise the fact, at least in that market.

So I think you can assume it's FM/DAB only, except that later ones are DAB+ too. (I may be mistaken but I believe DAB+ was added at the same time as Bluetooth.)

best

David

Cheers. That is what I suspected. 

No dice with the UQ2 on ISDB-T either. Considering the aerial input is rated completely different for frequency and resistance to television transmissions used as the ISDB-Tmm radio carrier, I'm not surprised.

feeling_zen posted:

Cheers. That is what I suspected. 

No dice with the UQ2 on ISDB-T either. Considering the aerial input is rated completely different for frequency and resistance to television transmissions used as the ISDB-Tmm radio carrier, I'm not surprised.

So I guess you are stuck with the TV/optical solution, then. Can you do this without a big, ugly station logo filling the TV screen - in the UK, that's what puts me off using the TV for radio. Maybe there's a way to turn off the TV screen?

Well there are a couple issues. There is no on screen logo. It is just black. 

But you cannot turn off the screen, and the digital out already goes to the Denon AV receiver. Both of those are deal breakers on their own. And the room I would do most listening has no TV (or room for one).

I may just park the discussion with myself until we move. Adding another box by way of a Japanese digital radio tuner may be more viable then. As would adding a dedicated FM aerial if the switchoff is nowhere in sight. But I'd have to pray Naim have modules left then.

[@mention:1566878603876589] Not sure where your post vanished to.

But to correct a point you made, ISDB-T is not specific to Japan. It was developed here but it's used in a number of countries like Brazil and the Philippines and a handful of others.

So while it is an "also ran" compared to the number of countries on DAB, it still has a sizeable user base. Though without wanting to appear snobby, most of the countries on the list don't strike me as prime markets for hifi or in fact any luxury good.