[Fwd: Anyone got a KWorld USB DVB-T TV Stick II (VS-DVB-T 395U) to work properly?]

[Fwd: Anyone got a KWorld USB DVB-T TV Stick II (VS-DVB-T 395U) to work properly?]

[Andy Low]

Hi!

I have just bought a KWorld USB DVB-T TV Stick II (VS-DVB-T 395U). It
works well in Windows but it will only receive 2 of the 6 local
multiplexes under linux.

I have tried it with OpenSuse 11.2 (kernel 2.6.31)  both out of the box
and with v4l from linuxtv.org/hg/~anttip/af9015.
Also with Opensuse 11.0 (kernel 2.6.25) with v4l from
linuxtv.org/hg/~anttip/af9015.

The results are always the same...

It is recognised and loads correctly according to /var/log/messages:

...kernel: usb 2-7: new high speed USB device using ehci_hcd and address 5
...kernel: usb 2-7: configuration #1 chosen from 1 choice
...kernel: dvb-usb: found a 'KWorld USB DVB-T TV Stick II (VS-DVB-T
395U)' in cold state, will try to load a firmware
...kernel: dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw'
...kernel: dvb-usb: found a 'KWorld USB DVB-T TV Stick II (VS-DVB-T
395U)' in warm state.
...kernel: dvb-usb: will pass the complete MPEG2 transport stream to the
software demuxer.
...kernel: DVB: registering new adapter (KWorld USB DVB-T TV Stick II
(VS-DVB-T 395U))
...kernel: af9013: firmware version:4.95.0
...kernel: DVB: registering adapter 0 frontend 0 (Afatech AF9013 DVB-T)...
...kernel: Quantek QT1010 successfully identified.
...kernel: input: IR-receiver inside an USB DVB receiver as
/devices/pci0000:00/0000:00:0b.1/usb2/2-7/input/input6
...kernel: dvb-usb: schedule remote query interval to 150 msecs.
...kernel: dvb-usb: KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)
successfully initialized and connected.
...kernel: usb 2-7: New USB device found, idVendor=1b80, idProduct=e39b
...kernel: usb 2-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
...kernel: usb 2-7: Product: DVB-T 2
...kernel: usb 2-7: Manufacturer: Afatech

Using AUTOSCAN in Kaffeine finds just 2 multiplexes and plays them well
with no errors.  During the search it shows good signal strength on
various other channels but doesn't get lock.  Similar behaviour using
the scan utility.  The 2 multiplexes it does find have the same
parameters (apart from frequency!) I0B8C34D34M16T2G32Y0.

Any suggestions?  Many thanks,  Andy

Re: [Fwd: Anyone got a KWorld USB DVB-T TV Stick II (VS-DVB-T 395U) to work properly?]

[Antti Palosaari]

On 11/19/2009 06:47 PM, Andy Low wrote:
> ...kernel: Quantek QT1010 successfully identified.

The reason is QT1010 which does not perform very well. Generally it 
locks better to weak signals, you can try weaker antenna and signal 
attenuator.

Antti
-- 
http://palosaari.fi/

Re: [Fwd: Anyone got a KWorld USB DVB-T TV Stick II (VS-DVB-T 395U) to work properly?]

[Andy Low]

Antti Palosaari wrote:
>
> On 11/19/2009 06:47 PM, Andy Low wrote:
>> ...kernel: Quantek QT1010 successfully identified.
>
> The reason is QT1010 which does not perform very well. Generally it
> locks better to weak signals, you can try weaker antenna and signal
> attenuator.
>
> Antti

Thanks for your very fast response!!

I have tried again with various different arrangements of antennas.  Any
further reduction in signal strength causes the working multiplexes to
be lost.  Checking the relative signal strengths on my working dvb-t
system, the 2 multiplexes that the KWorld stick can receive are the 2
most powerful.  Maybe I need more signal, not less?  Under Windows the
KWorld works very well on all multiplexes - surely this means that the
QT1010 is OK here and that the linux drivers should be able to work?? 
The multiplexes that work are both FEC_3_4 and QAM16.  None of the
FEC_2_3/QAM64 channels work.  Could it be that the receiver is not being
set up correctly?

Thanks again for any suggestions.  Andy