Channel 6-12 8 MHz not detected

cineq

cineq

Vu+ Newbie
I have Aton2 DVB-T USB tuner (Polish nBox). No problems witrh DVB-T on channels higher then 12. My block of flats have old antenna installation and UHV DVB-T channels are being shifted to lower channels. I know channels 6-12 should be 7 MHz wide, but in my block they are just shifted channels, so they remain 8 MHz.

VU cannot find any programs on these channels:

178 Mhz, 8 Mhz wide
226 MHz, 8 MHz wide

No problems under any Windows DVB-T client, if I enter the frequency and channel width manually, so USB tuner is not a problem.

Any idea?
 
angelofsky1980

angelofsky1980

BlackHole Driver Specialist
cineq said:
I have Aton2 DVB-T USB tuner (Polish nBox). No problems witrh DVB-T on channels higher then 12. My block of flats have old antenna installation and UHV DVB-T channels are being shifted to lower channels. I know channels 6-12 should be 7 MHz wide, but in my block they are just shifted channels, so they remain 8 MHz.

VU cannot find any programs on these channels:

178 Mhz, 8 Mhz wide
226 MHz, 8 MHz wide

No problems under any Windows DVB-T client, if I enter the frequency and channel width manually, so USB tuner is not a problem.

Any idea?
Click to expand...

You must adapt the terrestrial.xml file to your needs and frequencies ....
 
cineq

cineq

Vu+ Newbie
I understand, but I was scanning mentioned frequencies manually and I entered both the frequency and width. Under any Windows DVB application I only need to select manual scan and set these 2 parameters.
 
paolino

paolino

Vu+ User+++
cineq said:
I understand, but I was scanning mentioned frequencies manually and I entered both the frequency and width. Under any Windows DVB application I only need to select manual scan and set these 2 parameters.
Click to expand...

You have to edit your terrestrial.xml and insert correct values of your DVB-T channels. (correct center frequency and bandwidth for all your VHF channels)
 
cineq

cineq

Vu+ Newbie
If you read this thread I've already tried it, but no luck. Manual scan (by entering center frequency and width) doesn't help too. angelofsky1980 wrote it can be a driver issue but he hadn't time to check it a few weeks ago.
 
paolino

paolino

Vu+ User+++
cineq said:
If you read this thread I've already tried it, but no luck. Manual scan (by entering center frequency and width) doesn't help too. angelofsky1980 wrote it can be a driver issue but he hadn't time to check it a few weeks ago.
Click to expand...

Could you post your terrestrial.xml? And also frequencies, where Windows found the channels.
Thanks.
 
cineq

cineq

Vu+ Newbie
As I wrote I added these two frequencies to terrestrial.xml (see attached file), but no luck. Scanned manually - no luck.

Code: 
    <terrestrial name="Europe, Middle East, Africa: DVB-T Frequencies" flags="5">
        <transponder centre_frequency="178000000" bandwidth="0" constellation="3"/>
        <transponder centre_frequency="226000000" bandwidth="0" constellation="3"/>

Using DVBDream there is no problem:

dvbt.png

As you can see each channels can be found twice on the list. At given example (TVP1 HD) is broadcasted at 746000 KHz, 8 MHz - it is normal. f My block of flats (40 flats) has one antenna on the roof and selective ampliefier for given frequencies. Because of old and poor cables quality higher UHV frequencies have been shifted down to 6-12 VHF frequencies. In Europe DVB-T standard allows to broadcast in 6-12, but with the width of 7 MHz and thus center frequencies are little different.

Anyway DVB Dream receieves these channels on 178000 KHz 8 Mhz and 226000 KHz 8Hz width.
 

Attachments

  • terrestrial.txt
    23.8 KB · Views: 5
paolino

paolino

Vu+ User+++
@cineq: try with attached file. If it will work, you will understand, where it was an mistake.
 

Attachments

  • terrestrial.txt
    23.5 KB · Views: 8
cineq

cineq

Vu+ Newbie
I'll try this evening, but I tried manual scan of these frequencies with 7 and 8 MHz width some time ago. As I said - although these channels are shifted to VHF they still remain 8 MHz width. This is the problem. So I don't think setting 7 MHz channel width will help. Anyway thanks, I'll check and provide a feedback.
 
paolino

paolino

Vu+ User+++
cineq said:
I'll try this evening, but I tried manual scan of these frequencies with 7 and 8 MHz width some time ago. As I said - although these channels are shifted to VHF they still remain 8 MHz width. This is the problem. So I don't think setting 7 MHz channel width will help. Anyway thanks, I'll check and provide a feedback.
Click to expand...

You have to try, because I think that in your file are some conflicts.
 
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