[mythtv-users] Maplin twin tuner DVB-T USB Stick?

[Dave Pearson]

Ian Barton wrote:
>>>>> Has anybody tried using the twin tuner DVB-T USB stick that is currently 
>>>>> on offer from Maplin?
>>>>> It appears to be a Twinhan device.
>>>>>
>>>>>     
>>>>>       
>>>>>           
>>>> No, but I would be interested in buying one if it worked. As a side 
>>>> issue are the aerials that are included with this sort of tuner any use 
>>>> at all? I would quite like to use something like this with my notebook, 
>>>> but my experience with Freeview suggests that anything less than a roof 
>>>> mounted aerial is useless.
>>>>
>>>> Ian.
>>>>
>>>>         
>
>   
>>>>   
>>>>     
>>>>         
>>> Well I bit the bullet and bought one today. The device is a "TwinHan 
>>> AzureWave AD-TU700(704J)" and, so far I haven't been able to get it to 
>>> work. I'm away for the next few days, so won't be able to do any more 
>>> with it, but if anyone has any idea how to make it work, I would be very 
>>> pleased to hear.
>>>
>>> Dave.
>>>
>>>   
>>>       
>> Looks like this device needs the af9015 driver which is only available 
>> in the V4L/DVB kernel development branches at the moment as far as I can 
>> see.
>>
>> Paul H.
>> _______________________________________________
>>     
>
>
> There is quite a bit of information on the Ubuntu forums at: 
> http://ubuntuforums.org/showthread.php?t=606487 It doesn't look as 
> though it's straightforward!
>
> Ian.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>   
Well I've managed to get it to work (I'm using kubuntu intrepid) - this 
is how:

   1. I Downloaded and extracted the source code for the af9015 driver
      from http://linuxtv.org/hg/~anttip/af9015/archive/tip.tar.bz2
   2. I Downloaded the firmware from
      http://www.otit.fi/~crope/v4l-dvb/af9015/af9015_firmware_cutter/firmware_files/4.95.0/dvb-usb-af9015.fw
   3. I copied the firmware file to /lib/firmware/ and
      /lib/firmware/`uname -r`/ (I'm not sure which is actually used and
      the various instructions I found pointed to both locations).
   4. I changed into the af9015-93501ba684e4 directory and ran make then
      sudo make install
   5. I added dvb-usb-af9015 to /etc/modules
   6. I added options dvb-usb-af9015 dual_mode=1 to /etc/modprobe.d/options
   7. I rebooted and 2 new DVB devices were detected

I was then able to run mythtv-setup and add the new tuners n the usual way.

I have found that the tuners themselves are not particularly sensitive - 
my Avermedia DVB card gets a much stronger signal from the Antenna - 93% 
against 80% for Twinhan tuner 1 and only about 75% for Twinhan tuner 2. 
I'm going to try adjusting my Antenna to improve this as tuner 2 doesn't 
get a picture at all and tuner 1 gets lots of artifacts.

Regards,
Dave.