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NextPVR Forums Public Add-ons (3rd party plugins, utilities and skins) Old Stuff (Legacy) GB-PVR Support (legacy) v
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DVB-T tuning problems

 
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DVB-T tuning problems
BigMoose
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#1
2009-12-17, 08:49 PM
I'm having problems with the Irish DVB-T channels which used to work fine (fine when the signal is being transmitted! It's still technically a test here so not 100% reliable) but recently I've not been able to get them to tune in. The scan finds all the channels on two mux's (C61 seems to have the best signal). When I bring up the "map digital channels" screen in the config.exe, it shows RTE1 in the little window (but the tuning info must be some old config) as when I then do a rescan and click on one of the found channels the preview screen stops working. In pvrx2 when I select one of these channels the external amp shows some PCM sound briefly then it stops and the screen stays blank. It's odd that the scans seem to work but the results are unusable. I've read the "digital switch over" problem thread about DTT issues in Wales and no idea if this is related. It used to work find and clearly the channels are still watchable as sometimes I do get them in the preview window from some old config (which I'm guessing is the RTE1 tuning request I can see in the config.exe-native.log?). Logs and resulting scan.cache file attached. Any ideas??
martint123
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#2
2009-12-17, 09:30 PM
As a first experiment, I'd give the Hauppauge tool a run and see what that comes up with in the way of mux frequencies, channels found and strength/quality of them. (it works with most BDA tuners and not limited to Hauppauge ones). Just runa type 1 scan.
http://www.hauppauge.co.uk/board/showthread.php?t=18418
BigMoose
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#3
2009-12-17, 11:31 PM
I had a play with this and it's very odd. The channel shows in the preview window fine when you start "map digital channels" but as soon as you click on it (the same one that claims to be showing) it stops. In live TV I get audio and video for a fraction of a second then nothing. I've checked the parameters that make any sense to me from the ScanChannelsDBA tool but there was nothing too different to the GBPVR scan. Attached if anyone has the time or inclination to look. I did a scan with full logging on second time (both appear in this log).
BigMoose
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#4
2009-12-18, 07:59 AM
Ignore all that! The channels tune fine, they just dont play in LiveTV. In timeshift or recording they are fine. So I'm wondering now if it's a SAF problem although not sure that would make any difference in constructing a graph in live/preview mode compared to timeshift?
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