DAB (mp2) Channels not found in versions >=4.5

[jpuigs]

As you'll probably know, in Spain it still exist some DAB "original flavour" mp2 services. In Barcelona and Madrid we have 3 DAB MUX, which carry 18 DAB services and 1 DAB+ service. I had an old qtdab version 3.5 (I think) and I've tried to update, and to my surprise, new versions don't find mp2 services.

I've been trying all versions, one after another, to check where they dissapear, and the last one they work in is version 4.42 From 4.5 to 5.X they' don't work. I use only RTP-TCP mode, so I think it has no driver problem.

Here you can see that in version 4.4.2 everything appears....

and in version 4.5 (and all newer ones), it just finds the only DAB+ service on MUX 8A. On MUX 10A and 11B as there are no DAB+ services, it finds NOTHING.

[andimik]

@jpuigs

Wow, very interesting.

I wonder that you are the first one reporting that because at least UK, Norway and Moldova (partly) use mp2

[JvanKatwijk]

Wow, that is an interesting one. I just ran a recording of a bbc transmission (from 20200) and see all services. As you probably know, the bbc is using DAB So, I do not have an answer right now. I suggest you make a recording of the input and send me a link to it, then I can see what is going on (and what is not)

best jan

Op di 25 apr 2023 om 14:03 schreef jpuigs @.***>:

As you'll probably know, in Spain it still exist some DAB "original flavour" mp2 services. In Barcelona and Madrid we have 3 DAB MUX, which carry 18 DAB services and 1 DAB+ service. I had an old qtdab version 3.5 (I think) and I've tried to update, and to my surprise ,new versions don't find mp2 services.

I've been trying all versions, one after one, to check where they dissapear, and the last one they work is in version 4.42 From 4.5 to 5.X they' don't work. I use only RTP-TCP mode, so I think it has no driver problem.

Here you can see that in version 4.4.2 everything appears....

[image: image] https://user-images.githubusercontent.com/44906458/234269350-065c8daa-b1e8-4e6e-ac05-ee5ef5304152.png

and in version 4.5 (and all newer ones), it just finds the only DAB+ service on MUX 8A. On MUX 10A and 11B as there are no DAB+ services, it finds NOTHING.

[image: image] https://user-images.githubusercontent.com/44906458/234270272-ccdda973-9e59-4432-a2b2-6eea6591247f.png

— Reply to this email directly, view it on GitHub https://github.com/JvanKatwijk/qt-dab/issues/288, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACCPHQAANY32VNGLP3TO4TLXC64PVANCNFSM6AAAAAAXK4X2MY . You are receiving this because you are subscribed to this thread.Message ID: @.***>

-- Jan van Katwijk

[zeitfalle]

Hi Jan,

Just an FYI, I have no problems with MP2 DAB here in the UK.

Regards Paul

On Tue, Apr 25, 2023, 14:35 JvanKatwijk @.***> wrote:

Wow, that is an interesting one. I just ran a recording of a bbc transmission (from 20200) and see all services. As you probably know, the bbc is using DAB So, I do not have an answer right now. I suggest you make a recording of the input and send me a link to it, then I can see what is going on (and what is not)

best jan

Op di 25 apr 2023 om 14:03 schreef jpuigs @.***>:

As you'll probably know, in Spain it still exist some DAB "original flavour" mp2 services. In Barcelona and Madrid we have 3 DAB MUX, which carry 18 DAB services and 1 DAB+ service. I had an old qtdab version 3.5 (I think) and I've tried to update, and to my surprise ,new versions don't find mp2 services.

I've been trying all versions, one after one, to check where they dissapear, and the last one they work is in version 4.42 From 4.5 to 5.X they' don't work. I use only RTP-TCP mode, so I think it has no driver problem.

Here you can see that in version 4.4.2 everything appears....

[image: image] < https://user-images.githubusercontent.com/44906458/234269350-065c8daa-b1e8-4e6e-ac05-ee5ef5304152.png

and in version 4.5 (and all newer ones), it just finds the only DAB+ service on MUX 8A. On MUX 10A and 11B as there are no DAB+ services, it finds NOTHING.

[image: image] < https://user-images.githubusercontent.com/44906458/234270272-ccdda973-9e59-4432-a2b2-6eea6591247f.png

— Reply to this email directly, view it on GitHub https://github.com/JvanKatwijk/qt-dab/issues/288, or unsubscribe < https://github.com/notifications/unsubscribe-auth/ACCPHQAANY32VNGLP3TO4TLXC64PVANCNFSM6AAAAAAXK4X2MY

. You are receiving this because you are subscribed to this thread.Message ID: @.***>

-- Jan van Katwijk

— Reply to this email directly, view it on GitHub https://github.com/JvanKatwijk/qt-dab/issues/288#issuecomment-1521802585, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAZCI2JYTQDEQTUYJFT5Z6TXC7HKHANCNFSM6AAAAAAXK4X2MY . You are receiving this because you are subscribed to this thread.Message ID: @.***>

[jpuigs]

I've uploaded to wetransfer a 1 minute commandline iq recording from MUX 8A which carries 6 DAB and 1 DAB+ service. https://we.tl/t-Urz2QHux8Q

You'll see that KISS FM appears twice, it's the same station, one is component and the other is service. I don't know why it appears twice.

[JvanKatwijk]

Interesting "error" In order to prevent services to be visible before relevant attributes are known, software tested on the availability of some attribute values. Apparently one too may

The issue with KISS is simple, there are two services, sharing some attributes, but service names are the ones listed.

I uploaded sources, windows installers and Linux appImages

best jan

Op di 25 apr 2023 om 16:57 schreef jpuigs @.***>:

I've uploaded to wetransfer a 1 minute commandline iq recording from MUX 8A which carries 6 DAB and 1 DAB+ service. https://we.tl/t-Urz2QHux8Q

You'll see that KISS FM appears twice, it's the same station, one is component and the other is service. I don't know why it appears twice.

— Reply to this email directly, view it on GitHub https://github.com/JvanKatwijk/qt-dab/issues/288#issuecomment-1521940184, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACCPHQA4MS5OED2LPK55PT3XC7Q6LANCNFSM6AAAAAAXK4X2MY . You are receiving this because you commented.Message ID: @.***>

-- Jan van Katwijk