[mythtv-users] UK DVB-T problems

[Ciaran]

On Fri, 7 Jan 2005 21:54:33 -0000, Will <egroups at klubbing.com> wrote:
> No problem here, Bilsdale transmitter, AverTV 771, Duron 700, sorry!
> What transmitter are you using?
> 
> Will
> 
> > Sorry to jump on,  Anyone noticed any strange issues with UK-TV
> > History?  For me it seems as if every other video frame is skipping,
> > yet the audio is fine.  I don't believe its a signal issue as I can
> > receive most other channels just fine :) Very strange!
> > - ciaran
> >
> >
> > On Fri, 7 Jan 2005 11:27:44 +0000, Nick Craig-Wood <nick at craig-wood.com>
> > wrote:
> >> On Thu, Jan 06, 2005 at 11:45:24PM +0000, James Fidell wrote:
> >> > Having managed to find a few channels from the Mendip transmitter
> >> > (which
> >> > carries just about everything), I'm getting:
> >> >
> >> > $ tzap "BBC ONE"
> >> > using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> >> > tuning to 778000000 Hz
> >> > video pid 0x0258, audio pid 0x0259
> >> > status 01 | signal 1717 | snr 0000 | ber 0000ffff | unc 0000000b |
> >> > status 1f | signal 1616 | snr 9292 | ber 00008581 | unc 00000007 |
> >> > FE_HAS_LOCK
> >> > status 1f | signal 1717 | snr 9090 | ber 000073c9 | unc 00000009 |
> >> > FE_HAS_LOCK
> >> > status 1f | signal 1717 | snr 9696 | ber 0000680f | unc 0000000e |
> >> > FE_HAS_LOCK
> >> > status 1f | signal 1717 | snr 9999 | ber 00005e70 | unc 00000009 |
> >> > FE_HAS_LOCK
> >> > status 1f | signal 1717 | snr 8f8f | ber 00006a03 | unc 00000004 |
> >> > FE_HAS_LOCK
> >> > status 1f | signal 1717 | snr 9292 | ber 0000639f | unc 00000007 |
> >> > FE_HAS_LOCK
> >> >
> >> >
> >> > I'm guessing those figures really aren't good news and might explain
> >> > why
> >> > I can't see any channels from other muxes on that transmitter?
> >>
> >> Yes you are correct!
> >>
> >> The mux with BBC ONE (Myx 1) in is broadcast in QAM 16 which is better
> >> than the QAM 64 of the other multiplexes, and is probably at higher
> >> power.  You have a very low signal on that so its unlikely you'll get
> >> the other muxes.  You are getting uncorrectable errors in the above
> >> which will render the video very annoying!
> >>
> >> My worst multiplex (Mux A) has around 0x1000 correctable errors per
> >> second and no uncorrectable errors.  You've got about 10 times that
> >> many errors.  On Mux 1 I get no ber/unc at all!
> >>
> >> Use this (sort by mux) if you want to see what channel is where
> >>
> >>   http://homepages.enterprise.net/cavan/scripts/dtt/dtt.cgi
> >>
> >> So, better upgrade your aerial!
> >>
> >> --
> >> Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick
> >>
> >>
> >> _______________________________________________
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> >>
> >>
> >>
> >
> >
> > --
> > - Ciaran
> >
> 
> 
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Winterhill,  nova-t, 2.8Ghz Celeron :( Its very strange.... I was sort
of hoping it was  generic issue :)

-- 
- Ciaran