I have gone through the radio channels, and my DAB radio has picked up:

Fun Kids UK (which I presume was D1 TestB with a bitrate of 80kbps in mono) has appeared. That's pretty obvious because it launches on June 27.

D1 TestA is now in 48Kbps mono and a new station, D1 Test1 has popped up, also in 48Kbps mono. And you can tell it is too. The sound quality is pretty poor, even on my tinny speaker!

LBC preparing for national DAB? Can't imagine it would be for the other station that broadcasts to my knowledge in 48Kbps mono, Traffic Radio, because of its regional nature.

I have just noticed D1 TestA and D1 Test1 not doing anything here, both seem to be dead air but i can hear hiss very faintly. Fun Kids UK however seems to be broadcasting "This IS Digital One"

Both D1 Test channels are playing the same "this is Digital One" loop that they always have, the difference is in the change in bitrate of D1 TestA and the addition of D1 Test1.

The new test station is part of a technical demonstration at next week's Radio Festival: http://radiotoday.co.uk/news.php?extend.4887

its just some test for a radiofestival demo

I did think that, and the date matches. I have done some working out, and there is enough capacity for a 192Kbps audio and data test stream as that article states, plus both D1 Test channels.

Another new service has popped up "Data&Audio Test" - 192kbps. That will be the Radio Festival one

That pretty much confirms what I suspected, the new D1 Test1 isn't connected in any way to the data and audio test for the Radio Festival. So to the original question now this has been cleared up - why has a new 48Kbps mono test channel be added on Digital One?

After the Radio Festival test finishes they can then reconfigure the bandwidth, and will have 288kbs (if my sums are correct) to reuse for any new stations.

Seems Premier radio are also raising funds on air for natiional DAB and have reached £425k of the target of £500k.

On their website they have a donation section and I can't work out whether they are doing to expand (a mention of "calling the nation to Christ" could indicate they are thinking of D1) or they have a £500k deficit and are trying to fill it.

From the 2008 annual review
http://www.premier.org.uk/about/annualreview.aspx

So presume the £500k is for national DAB, but might be wrong in this uncertain financial climate!

http://www.ukdigitalradio.com/news/d...=&year=&id=332

I presume that this is in addition to TrafficMaster? Maybe 48kbps is required for everything TPEG can offer, including announcements?

http://www.tpeg.org/en/technologies/

It does seem to be the same as the Trafficmaster TPEG and BBC TPEG traffic system, it sends codes so only needs to be 8k, the codes relate to words and phrases stored using voice generation on the device to be played as announcements to the driver. This will probably be built into new car sets!
Seems strange that ITIS Holdings will setup thier own system if it is running on D1 and the BBC muxes already!
http://www.trafficmaster.co.uk/__assets/asset436.pdf
This report below if from last year and TPEG is now on D1, maybe an extra Trafficmaster subscription might be required, but the BBC system seems to be free!
http://www.prnewswire.com/cgi-bin/st...4839213&EDATE=

Data&Audio actually sounds pretty good to my ears. kinda would do at 192k though

how bad does the test stations sound at 48kps? even talksport at 64kps sounds decent for a speech service. didn't realise the difference a 16kps would be so much.

These test stations sounds like LW or MW. Such lower quality sound will not exactly help drive DAB like it is trying to.

http://premier.org.uk/events/premier...20croydon.aspx

Maybe the announcement will be about national DAB?

Well i tried ringing Premier but they don't seem to open on Saturday. I'll see if I can get through on email but that could be hit and miss whether anyone gets back to me

They really do sound totally sh*t!

Data&Audio Test is dead for me though. Edit: No it's not, just checked again. It was dead yesterday.

I'm betting that it will be on air during the times when the demonstrations for the Radio Festival are on. No point broadcasting when there is on-one there to hear or see it (not that you'll experience most of it, because many of the tests cannot be picked up on a standard radio).

They have not reached the target yet and may not confirm anything untill the 7th July.

Music on now!
Supposed to be surround sound
http://www.iis.fraunhofer.de/EN/bf/a...absurround.jsp

edit seems to be BBC archive clips including a bit of tennis!

The DataTest channel behaves a little differently from others on Digital One. I get maximum signal strength here but the modulation (perceived audio level) seems to be well down at least 10dB I would guess. Also when I put an 18dB attenuator in the aerial lead, the DataTest tech parameters indication went to Mono 192kbps and then the audio went intermittent like an analogue signal. All the other Digital One channels were unaffected. Can anyone explain what is going on here?

Possibly PL4 - i.e. less error correction. - IIRC PL4 @ 192kbps uses the same capacity as PL3 @ 160kbps - more services at the expense of signal robustness.

Wohnort now indicating a new 12 or 16kbps data stream on D1 in relation to this (depending on which page you look).

http://www.wohnort.org/DAB/

ITIS is 16k on my receiver.

My Acoustic Solutions SP110 tuner is unable to receive the D1 version of Fun Kids despite an autotune. I'm still getting the DRg London version though.

The other DAB radios are showing two Fun Kids when I scroll through the stations.