[mythtv-users] Fail to tune channels in UK using Rowridgetransmitter

Myth TV mythtv at fsmail.net
Sun Jan 8 18:28:29 UTC 2006


========================================
 Message Received: Jan 08 2006, 11:00 AM
 From: "Steve Daniels" <steve.p.daniels at googlemail.com>
 To: "Discussion about mythtv" <mythtv-users at mythtv.org>
 Cc: 
 Subject: Re: [mythtv-users] Fail to tune channels in UK using	Rowridgetransmitter
 
 ----- Original Message ----- 
 From: "Myth TV" <mythtv at fsmail.net>
 To: "mythtv-users" <mythtv-users at mythtv.org>
 Sent: Sunday, January 08, 2006 9:33 AM
 Subject: [mythtv-users] Fail to tune channels in UK using 
 Rowridgetransmitter
 
 >
 > However I am unable to tune it to any channel at all.
 >
 > I have checked the card and reception using the dvb-utils and dvbstream.
 >
 > I have managed to get all 85 Freeview channels information using the 
 > command :-
 >
 > # scan -u /usr/share/doc/dvb-utils/examples/scan/dvb-t/uk-Rowridge 
 >  >.tzap/channels.conf
 >
 > and example of the BBC1 channel information I got is in the attached file.
 >
 > I am then able to use the following commands to watch BBC1 channel using 
 > the dvbstream :-
 >
 > # tzap -r "BBC ONE"
 >
 > # dvbstream -o -ps 600 601 -qam 16 -cr 3_4 | xine stdin://mpeg2
 >
 > When trying to tune to BBC1 using the frequency tested under tzap/dvbsteam 
 > of 489833330 I still get nothing.  I get the same if I try to use the Full 
 > Scan option.
 >
 > Can someone please help me with the tuning of my card.
 >
 >
 I assume your running the latest *stable* mythtv. When you say "When trying 
 to tune to BBC1 using the frequency tested under tzap/dvbsteam of 489833330 
 I still get nothing" Where did you put this frequency? From looking at your 
 attachments, if you didn't do so already you want to create a new transport 
 with the following details:
 Standard:     DVB
 Frequency:   489833330
 Bandwidth:   8 MHz
 Inversion:      Auto
 Constellation: QAM 16
 LP Coderate: Auto (I never bothered figuring out which was which out of 
 these two so just left em at auto)
 HP Coderate: Auto
 Trans. Mode: 2K
 Gaurd Interval: 1/32
 Hierachy: None
 
 YMMV
 
 But I had to set up ALL of my 6 transports for WinterHill manually. The 
 above will only give you BBC channels if the scan works.
 
 HTH
 
 Steve 
 
 
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Steve,

Thanks for the pointers.

I was using the default 'auto' for the other parameters apart from the frequency setting.  Now reset all according to the channels.conf generated from the tzap I am able to see that scanning for all channels does return all the desired channels.

However I am still not able to watch tv.

The front end reported that it took long to be allowed to read ...
whilst the backend log reported that it could not find tuning parameters for transport 0.

In my mythtv-setup I did not have a transport 0

I have set up transport for each of the frequency deleted in my channels.conf.  e.g.
489833330
513833330
530167000
545833330
562166670
570166670

Please see attached files showing the frontend and backend outputs.

Is there something else I should be setting that I am not aware of ?

Thanking you once again.
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