recommendation for hd atsc usb device?

recommendation for hd atsc usb device?

[Neal Becker]

Can someone suggest a usb device with atsc input capable of hd capture 
(supported by current linux kernels?)


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Re: recommendation for hd atsc usb device?

[Devin Heitmueller]

On Thu, Apr 23, 2009 at 9:26 AM, Neal Becker <ndbecker2@gmail.com> wrote:
> Can someone suggest a usb device with atsc input capable of hd capture
> (supported by current linux kernels?)

See here for a current list:

http://linuxtv.org/wiki/index.php/ATSC_USB_Devices

If you have any questions about a specific device, feel free to email the ML.

Cheers,

Devin

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Re: recommendation for hd atsc usb device?

[Neal Becker]

Devin Heitmueller wrote:

> On Thu, Apr 23, 2009 at 9:26 AM, Neal Becker <ndbecker2@gmail.com> wrote:
>> Can someone suggest a usb device with atsc input capable of hd capture
>> (supported by current linux kernels?)
> 
> See here for a current list:
> 
> http://linuxtv.org/wiki/index.php/ATSC_USB_Devices
> 
> If you have any questions about a specific device, feel free to email the
> ML.
> 
> Cheers,
> 
> Devin
> 

Thank you!  I do have one question.  My ATSC reception is marginal.  Are 
there any recommendations for devices that give better ATSC performance (I 
think the main issue in my location is multipath)


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Re: recommendation for hd atsc usb device?

[b3782802]

Neal Becker wrote:

> My ATSC reception is marginal.  
> Are there any recommendations for devices that give better ATSC performance (I 
> think the main issue in my location is multipath)

Yes! 

Get a highly directional antenna. 
A big honkin' UHF Yagi[1] should do the trick. 
Better yet, mount it high (like on a chimney). 
Better yet, use an antenna rotor[2]. 

[1] http://en.wikipedia.org/wiki/Yagi_antenna
    E.g. http://www.radioshack.com/product/index.jsp?productId=2417011
[2] http://en.wikipedia.org/wiki/Antenna_rotor

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Re: recommendation for hd atsc usb device?

[Neal Becker]

b3782802@columbus.rr.com wrote:

> Neal Becker wrote:
> 
>> My ATSC reception is marginal.
>> Are there any recommendations for devices that give better ATSC
>> performance (I think the main issue in my location is multipath)
> 
> Yes!
> 
> Get a highly directional antenna.
> A big honkin' UHF Yagi[1] should do the trick.
> Better yet, mount it high (like on a chimney).
> Better yet, use an antenna rotor[2].
> 
I've got a big outdoor antenna on a rotor.  My question is, are some 
chipsets better/worse for fringe performance, and particularly with respect 
to multipath?


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Re: recommendation for hd atsc usb device?

[Neal Becker]

Neal Becker wrote:

> b3782802@columbus.rr.com wrote:
> 
>> Neal Becker wrote:
>> 
>>> My ATSC reception is marginal.
>>> Are there any recommendations for devices that give better ATSC
>>> performance (I think the main issue in my location is multipath)
>> 
>> Yes!
>> 
>> Get a highly directional antenna.
>> A big honkin' UHF Yagi[1] should do the trick.
>> Better yet, mount it high (like on a chimney).
>> Better yet, use an antenna rotor[2].
>> 
> I've got a big outdoor antenna on a rotor.  My question is, are some
> chipsets better/worse for fringe performance, and particularly with
> respect to multipath?
> 
I'm considering WinTV-HVR-1950.  Any comments?

Samsung claims:
"The new S5H1411 boasts a higher reception success rate than other devices 
in multi-path environments where signal interference is high, such as 
densely populated urban areas; dynamic environments with serious signal 
distortion among many moving vehicles; environments with major signal phase 
errors because of cable retransmission and remote areas where reception is 
generally poor."

Well, at least they have their heart in the right place :)  I have never 
been able to find real lab test results for ATSC reception performance. 


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Re: recommendation for hd atsc usb device?

[Devin Heitmueller]

On Thu, Apr 23, 2009 at 2:18 PM, Neal Becker <ndbecker2@gmail.com> wrote:
> Samsung claims:
> "The new S5H1411 boasts a higher reception success rate than other devices
> in multi-path environments where signal interference is high, such as
> densely populated urban areas; dynamic environments with serious signal
> distortion among many moving vehicles; environments with major signal phase
> errors because of cable retransmission and remote areas where reception is
> generally poor."
>
> Well, at least they have their heart in the right place :)  I have never
> been able to find real lab test results for ATSC reception performance.

Unfortunately, the marketing material fora ll the vendors is going to
say crap like that.  And nobody who has the equipment necessary to
objectively compare things like multipath performance across devices
are going to publish their findings due to competitive interests.

Also, you cannot just look at the demod, the tuner itself is a factor
as well (and in some cases the pairing of the demod/tuner).

Devin

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Re: recommendation for hd atsc usb device?

[Neal Becker]

Devin Heitmueller wrote:

> On Thu, Apr 23, 2009 at 2:18 PM, Neal Becker <ndbecker2@gmail.com> wrote:
>> Samsung claims:
>> "The new S5H1411 boasts a higher reception success rate than other
>> devices in multi-path environments where signal interference is high,
>> such as densely populated urban areas; dynamic environments with serious
>> signal distortion among many moving vehicles; environments with major
>> signal phase errors because of cable retransmission and remote areas
>> where reception is generally poor."
>>
>> Well, at least they have their heart in the right place :)  I have never
>> been able to find real lab test results for ATSC reception performance.
> 
> Unfortunately, the marketing material fora ll the vendors is going to
> say crap like that.  And nobody who has the equipment necessary to
> objectively compare things like multipath performance across devices
> are going to publish their findings due to competitive interests.
> 
> Also, you cannot just look at the demod, the tuner itself is a factor
> as well (and in some cases the pairing of the demod/tuner).
> 
> Devin
> 
Hate to tie up your ML with my questions, but just one more.  Before I go 
ahead and order WinTV-HVR-1950, anyone know of any issue with using this on 
my fedora F10 system (kernel 2.6.27.21-170.2.56.fc10.x86_64)?


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Re: recommendation for hd atsc usb device?

[Andy Walls]

On Thu, 2009-04-23 at 11:49 -0400, b3782802@columbus.rr.com wrote:
> Neal Becker wrote:
> 
> > My ATSC reception is marginal.  
> > Are there any recommendations for devices that give better ATSC performance (I 
> > think the main issue in my location is multipath)
> 
> Yes! 
> 
> Get a highly directional antenna. 
> A big honkin' UHF Yagi[1] should do the trick. 
> Better yet, mount it high (like on a chimney). 
> Better yet, use an antenna rotor[2]. 
> 
> [1] http://en.wikipedia.org/wiki/Yagi_antenna
>     E.g. http://www.radioshack.com/product/index.jsp?productId=2417011
> [2] http://en.wikipedia.org/wiki/Antenna_rotor


Well, be advised that when the US DTV transition is complete, some
stations will have moved back to VHF allocations.  You'll need more than
a UHF antenna.

As far as improving signal goes:

http://www.ivtvdriver.org/index.php/Howto:Improve_signal_quality

And Winegard sells some good antenna amplifiers.  Just remember, too
much amplification can overdrive the front end of tuners and the
intermodulation products that result will be equivalent to a rise in
noise.  Also, FM radio stations that are very strong in your antenna
beam will show up as a herring-bone pattern (and thus noise) on analog
TV stations on channels in the high-VHF and UHF bands.

It's best to install your antenna and antenna amp and ajdust the FM trap
while analog stations still are broadcasting so you can see gradual
visual effects due to over-amplification on analog stations and correct
them.

-Andy

Re: recommendation for hd atsc usb device?

[chinmaya]

Just a word caution: I have not been able to get Hauppage 950q to work on
Ubuntu 8.10 + Mythbuntu with latest v4l-dvb code yet (both analog and
digital)

On Thu, Apr 23, 2009 at 7:47 AM, Devin Heitmueller <
devin.heitmueller@gmail.com> wrote:

> On Thu, Apr 23, 2009 at 9:26 AM, Neal Becker <ndbecker2@gmail.com> wrote:
> > Can someone suggest a usb device with atsc input capable of hd capture
> > (supported by current linux kernels?)
>
> See here for a current list:
>
> http://linuxtv.org/wiki/index.php/ATSC_USB_Devices
>
> If you have any questions about a specific device, feel free to email the
> ML.
>
> Cheers,
>
> Devin
>
> --
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> http://www.devinheitmueller.com
> AIM: devinheitmueller
>
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Re: recommendation for hd atsc usb device?

[Devin Heitmueller]

On Thu, Apr 23, 2009 at 12:50 PM, chinmaya <chinmaya@gmail.com> wrote:
> Just a word caution: I have not been able to get Hauppage 950q to work on
> Ubuntu 8.10 + Mythbuntu with latest v4l-dvb code yet (both analog and
> digital)

Well, if that is the case, then it's the first I've heard of it.
Please provide more details regarding specifically what behavior you
are experiencing.

Thanks,

Devin

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Re: recommendation for hd atsc usb device?

[chinmaya]

On Thu, Apr 23, 2009 at 11:13 AM, Devin Heitmueller <
devin.heitmueller@gmail.com> wrote:

> On Thu, Apr 23, 2009 at 12:50 PM, chinmaya <chinmaya@gmail.com> wrote:
> > Just a word caution: I have not been able to get Hauppage 950q to work on
> > Ubuntu 8.10 + Mythbuntu with latest v4l-dvb code yet (both analog and
> > digital)
>
> Well, if that is the case, then it's the first I've heard of it.
> Please provide more details regarding specifically what behavior you
> are experiencing.
>
> Thanks,
>
> Devin
>
> --
> Devin J. Heitmueller
> http://www.devinheitmueller.com
> AIM: devinheitmueller
>



Hauppage 950q on Mythbuntu

.  Fresh installation of Ubuntu 8.10
.  Installed firmware as described in
http://linuxtv.org/wiki/index.php/Hauppauge_WinTV-HVR-950Q
.  Installed mythbuntu
.  Now I can tune to clear-qams and play, record
.  I decide to get latest v4l-dvb so that I would get analog support
.  I get software through mercurial, install and setup
.  I try settingup Analog.
.  Although my channel scan tunes, I could not play TV in mythfrontend
.  Now I decided to go back to Digital TV,
.  Keeping latest v4l-dvb, I delete analog device in mythbuntu and try to
tune to digital (clear-qams)
.  Nothing gets tuned


dmesg logs on 950q

[   19.347264] tveeprom 0-0050: Hauppauge model 72001, rev B3F0, serial#
6097150
[   19.347270] tveeprom 0-0050: MAC address is 00-0D-FE-5D-08-FE
[   19.347274] tveeprom 0-0050: tuner model is Xceive XC5000 (idx 150, type
76)
[   19.347278] tveeprom 0-0050: TV standards NTSC(M) ATSC/DVB Digital
(eeprom 0x88)
[   19.347281] tveeprom 0-0050: audio processor is AU8522 (idx 44)
[   19.347285] tveeprom 0-0050: decoder processor is AU8522 (idx 42)
[   19.347288] tveeprom 0-0050: has no radio, has IR receiver, has no IR
transmitter
[   19.347292] hauppauge_eeprom: hauppauge eeprom: model=72001
[   19.389744] au8522 0-0047: creating new instance
[   19.389749] au8522_decoder creating new instance...
[   19.480142] tuner 0-0061: chip found @ 0xc2 (au0828)
[   19.576582] xc5000 0-0061: creating new instance
[   19.581054] xc5000: Successfully identified at address 0x61
[   19.581062] xc5000: Firmware has not been loaded previously
[   19.585791] xc5000: waiting for firmware upload (dvb-fe-xc5000-1.1.fw)...
[   19.585800] firmware: requesting dvb-fe-xc5000-1.1.fw
[   19.606640] xc5000: firmware read 12332 bytes.
[   19.606644] xc5000: firmware upload
[   23.637407] usb-storage: device scan complete
[   23.640735] scsi 3:0:0:0: Direct-Access     YMAX     MagicJack
2.00 PQ: 0 ANSI: 2
[   23.643396] scsi 3:0:0:1: CD-ROM            YMAX     MagicJack
2.00 PQ: 0 ANSI: 2
[   23.649685] sd 3:0:0:0: [sdb] 36352 512-byte hardware sectors (19 MB)
[   23.652252] sd 3:0:0:0: [sdb] Write Protect is off
[   23.652256] sd 3:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   23.652260] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[   23.661435] sd 3:0:0:0: [sdb] 36352 512-byte hardware sectors (19 MB)
[   23.664252] sd 3:0:0:0: [sdb] Write Protect is off
[   23.664256] sd 3:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   23.664259] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[   23.664266]  sdb: unknown partition table
[   24.136940] sd 3:0:0:0: [sdb] Attached SCSI removable disk
[   24.137159] sd 3:0:0:0: Attached scsi generic sg2 type 0
[   24.161586] sr1: scsi3-mmc drive: 0x/0x caddy
[   24.161778] sr 3:0:0:1: Attached scsi CD-ROM sr1
[   24.161991] sr 3:0:0:1: Attached scsi generic sg3 type 5
[   27.672993] au8522 0-0047: attaching existing instance
[   27.680397] xc5000 0-0061: attaching existing instance
[   27.685178] xc5000: Successfully identified at address 0x61
[   27.685185] xc5000: Firmware has been loaded previously
[   27.685193] DVB: registering new adapter (au0828)
[   27.685201] DVB: registering adapter 0 frontend 0 (Auvitek AU8522
QAM/8VSB Frontend)...
[   27.685953] Registered device AU0828 [Hauppauge HVR950Q]
[   27.792588] usbcore: registered new interface driver au0828
[   27.841115] usbcore: registered new interface driver snd-usb-audio
[   28.453988] lp: driver loaded but no devices found
[   28.631881] Adding 2040212k swap on /dev/sda5.  Priority:-1 extents:1
across:2040212k
[   29.175301] EXT3 FS on sda7, internal journal
[   30.003933] kjournald starting.  Commit interval 5 seconds
[   30.004681] EXT3 FS on sda6, internal journal
[   30.004693] EXT3-fs: mounted filesystem with ordered data mode.


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