DVB-T2 PCIe vs DVB-S2

DISCUSSION Ian Campbell 4 participants 5 messages May 26, 2015 – May 28, 2015 Media (V4L/DVB)

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Ian Campbell

author

2015-05-26 14:27 UTC #0 lore raw

Hello,

I'm looking to get a DVB-T2 tuner card to add UK Freeview HD to my mythtv box.

Looking at http://linuxtv.org/wiki/index.php/DVB-T2_PCIe_Cards is seems that many (the majority even) of the cards there are actually DVB-S2.

Is this a mistake or is there something I don't know (like maybe S2 is compatible with T2)?

Thanks,
Ian.

Jemma Denson

2015-05-26 15:45 UTC #1 lore raw

Quoted 5 lines · Ian Campbell

Hello,
I'm looking to get a DVB-T2 tuner card to add UK Freeview HD to my mythtv box.

Quoted 8 lines

Looking at http://linuxtv.org/wiki/index.php/DVB-T2_PCIe_Cards is seems that many (the majority even) of the cards there are actually DVB-S2.
Is this a mistake or is there something I don't know (like maybe S2 is compatible with T2)?
Thanks,
Ian.

That's a mistake - I don't recall that table looking like that when I was looking for one, and S2 is quite definitely not compatible with T2!

I can confirm that the 290e works out of the box with myth with very few problems, however it's well out of production now and you might not be after a USB device. I'm not sure anything else would work without some hacking because last I heard myth doesn't do T2 the proper way using DVBv5 yet, and afaik only the 290e driver has a fudge to allow T2 on v3.
(http://lists.mythtv.org/pipermail/mythtv-users/2014-November/374441.html and https://code.mythtv.org/trac/ticket/12342)

Jemma.

Olli Salonen

2015-05-26 19:10 UTC #2 lore raw

There are indeed a few DVB-T2 PCIe cards that are supported (DVBSky T9580, T980C, T982C, TechnoTrend CT2-4500 CI, Hauppauge HVR-2205, Hauppauge HVR-5525 at least come to my mind). PCTV 290e is a USB device, not PCIe. In the wiki there's currently some issue with the filtering when it comes to the tables - that's why every PCIe device is printed instead of just the DVB-T2 supporting ones.

As Jemma points out, the application should be clever enough to tell the driver that DVB-T2 delivery system is wanted. For the cxd2820r driver (PCTV 290e) Antti made the "fudge", but has decided not to implement it in the Si2168 driver (reasoning, to which I wholeheartedly agree, is here:
http://blog.palosaari.fi/2014/09/linux-dvb-t2-tuning-problems.html ).

When it comes to PVR backends, at least tvheadend supports DVBv5 fully
- I don't have a clear picture of other backends.

Cheers,
-olli

Quoted 34 lines · Jemma Denson

Quoted 6 lines · Ian Campbell
Hello,
I'm looking to get a DVB-T2 tuner card to add UK Freeview HD to my mythtv box.
Quoted 8 lines
Looking at http://linuxtv.org/wiki/index.php/DVB-T2_PCIe_Cards is seems that many (the majority even) of the cards there are actually DVB-S2.
Is this a mistake or is there something I don't know (like maybe S2 is compatible with T2)?
Thanks,
Ian.
That's a mistake - I don't recall that table looking like that when I was looking for one, and S2 is quite definitely not compatible with T2!
I can confirm that the 290e works out of the box with myth with very few problems, however it's well out of production now and you might not be after a USB device. I'm not sure anything else would work without some hacking because last I heard myth doesn't do T2 the proper way using DVBv5 yet, and afaik only the 290e driver has a fudge to allow T2 on v3.
(http://lists.mythtv.org/pipermail/mythtv-users/2014-November/374441.html
and https://code.mythtv.org/trac/ticket/12342)
Jemma.
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Another Sillyname

2015-05-26 20:57 UTC #3 lore raw

TBS cards.....PCIe x1 used them for years in both DVB-T2 and DVB-S2 formats......never had a problem (except the drivers were cr*p a fair few years back).....would not hesitate to recommend them to anyone.

Currently have quad tuners of both running in a server that hasn't needed a reboot in 524 days and counting.

Quoted 59 lines · Olli Salonen

There are indeed a few DVB-T2 PCIe cards that are supported (DVBSky T9580, T980C, T982C, TechnoTrend CT2-4500 CI, Hauppauge HVR-2205, Hauppauge HVR-5525 at least come to my mind). PCTV 290e is a USB device, not PCIe. In the wiki there's currently some issue with the filtering when it comes to the tables - that's why every PCIe device is printed instead of just the DVB-T2 supporting ones.
As Jemma points out, the application should be clever enough to tell the driver that DVB-T2 delivery system is wanted. For the cxd2820r driver (PCTV 290e) Antti made the "fudge", but has decided not to implement it in the Si2168 driver (reasoning, to which I wholeheartedly agree, is here:
http://blog.palosaari.fi/2014/09/linux-dvb-t2-tuning-problems.html ).
When it comes to PVR backends, at least tvheadend supports DVBv5 fully
- I don't have a clear picture of other backends.
Cheers,
-olli
Quoted 29 lines · Jemma Denson
Quoted 6 lines · Ian Campbell
Hello,
I'm looking to get a DVB-T2 tuner card to add UK Freeview HD to my mythtv box.
Quoted 8 lines
Looking at http://linuxtv.org/wiki/index.php/DVB-T2_PCIe_Cards is seems that many (the majority even) of the cards there are actually DVB-S2.
Is this a mistake or is there something I don't know (like maybe S2 is compatible with T2)?
Thanks,
Ian.
That's a mistake - I don't recall that table looking like that when I was looking for one, and S2 is quite definitely not compatible with T2!
I can confirm that the 290e works out of the box with myth with very few problems, however it's well out of production now and you might not be after a USB device. I'm not sure anything else would work without some hacking because last I heard myth doesn't do T2 the proper way using DVBv5 yet, and afaik only the 290e driver has a fudge to allow T2 on v3.
(http://lists.mythtv.org/pipermail/mythtv-users/2014-November/374441.html
and https://code.mythtv.org/trac/ticket/12342)
Quoted 5 lines
Jemma.
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Ian Campbell

author

2015-05-28 07:41 UTC #4 lore raw

In reply to Olli Salonen

Thanks guys, it hadn't occurred to me that I'd need to check the mythtv side as well! (It's obvious though now it's been pointed out...)

Since one of my two Nova-T-500 died recently I may just replace it with an HD capable DVB-T2 card but only use it for DVD-T for now while the PVR side catches up.

Thanks for the advice and the pointers to the available h/w!

Ian.

Quoted 56 lines · Olli Salonen

There are indeed a few DVB-T2 PCIe cards that are supported (DVBSky T9580, T980C, T982C, TechnoTrend CT2-4500 CI, Hauppauge HVR-2205, Hauppauge HVR-5525 at least come to my mind). PCTV 290e is a USB device, not PCIe. In the wiki there's currently some issue with the filtering when it comes to the tables - that's why every PCIe device is printed instead of just the DVB-T2 supporting ones.
As Jemma points out, the application should be clever enough to tell the driver that DVB-T2 delivery system is wanted. For the cxd2820r driver (PCTV 290e) Antti made the "fudge", but has decided not to implement it in the Si2168 driver (reasoning, to which I wholeheartedly agree, is here:
http://blog.palosaari.fi/2014/09/linux-dvb-t2-tuning-problems.html ).
When it comes to PVR backends, at least tvheadend supports DVBv5 fully
- I don't have a clear picture of other backends.
Cheers,
-olli
Quoted 34 lines · Jemma Denson
Quoted 6 lines · Ian Campbell
Hello,
I'm looking to get a DVB-T2 tuner card to add UK Freeview HD to my mythtv box.
Quoted 8 lines
Looking at http://linuxtv.org/wiki/index.php/DVB-T2_PCIe_Cards is seems that many (the majority even) of the cards there are actually DVB-S2.
Is this a mistake or is there something I don't know (like maybe S2 is compatible with T2)?
Thanks,
Ian.
That's a mistake - I don't recall that table looking like that when I was looking for one, and S2 is quite definitely not compatible with T2!
I can confirm that the 290e works out of the box with myth with very few problems, however it's well out of production now and you might not be after a USB device. I'm not sure anything else would work without some hacking because last I heard myth doesn't do T2 the proper way using DVBv5 yet, and afaik only the 290e driver has a fudge to allow T2 on v3.
(http://lists.mythtv.org/pipermail/mythtv-users/2014-November/374441.html
and https://code.mythtv.org/trac/ticket/12342)
Jemma.
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