Kaffeine - re-tuning London TV Channels

[Pinnerite]

After re-tuning, I've lost all my BBC channels and most of the rest.
If anyone has successfully done this would they be kind enough to
send me a copy of their scanfile.dvb file, held at
/home/yourhomename/.kde4/share/apps/kaffeine or just the:

[dvb-t/uk-CrystalPalace]

section. The signal where I need it is a bit weak but it worked before
the shift to the new trnsmission frequencies (or whatever the change
entailed) at the beginning this month.

Thanks in advance.

--
________________________________________________
PCLinuxOS release 2011 (PCLinuxOS) for x86_64
Kernel 2.6.38.8-pclos3
KDE version 4.6.5
Running on an AMD 4-core processor

[Tony Houghton]

In <jm0e0r$n6o$1...@speranza.aioe.org>,

Pinnerite <pinnerite-with...@asandco.co.uk> wrote:

> After re-tuning, I've lost all my BBC channels and most of the rest.
> If anyone has successfully done this would they be kind enough to
> send me a copy of their scanfile.dvb file, held at
> /home/yourhomename/.kde4/share/apps/kaffeine or just the:
>
> [dvb-t/uk-CrystalPalace]
>
> section. The signal where I need it is a bit weak but it worked before
> the shift to the new trnsmission frequencies (or whatever the change
> entailed) at the beginning this month.

Doesn't it have an option to scan the whole spectrum? You could try
that. ISTR there's some sort of option for frequency offsets and you
have to choose one of them for the UK.

IME using a predefined set of frequencies with kaffeine is useless, the
files are badly out of date. In other applications it wouldn't matter
because there's usually at least one correct channel left in the files,
and as long as a scanner finds one correct channel it can read
information about the others from it. Unfortunately kaffeine doesn't
seem to do that IME.

--
TH * http://www.realh.co.uk

[Pinnerite]

Tony Houghton wrote:

> In <jm0e0r$n6o$1...@speranza.aioe.org>,
> Pinnerite <pinnerite-with...@asandco.co.uk> wrote:
>
>> After re-tuning, I've lost all my BBC channels and most of the rest.
>> If anyone has successfully done this would they be kind enough to
>> send me a copy of their scanfile.dvb file, held at
>> /home/yourhomename/.kde4/share/apps/kaffeine or just the:
>>
>> [dvb-t/uk-CrystalPalace]
>>
>> section. The signal where I need it is a bit weak but it worked before
>> the shift to the new trnsmission frequencies (or whatever the change
>> entailed) at the beginning this month.
>
> Doesn't it have an option to scan the whole spectrum? You could try
> that. ISTR there's some sort of option for frequency offsets and you
> have to choose one of them for the UK.

It does but it misses out several stations. The alternative is to disconnect
my computer and reconnect it at a point in my house where the signal is
stronger. I have a loft installed ampifier and distribition manager dating
back to the 70s. It works brilliantly but the lead to where my office is
causes too much signal loss or maybe S/N ratio deteriorates. Adding extra
amplification at the computer end doen't seem to help so unless I can frig
it I'll have to move closer to the loft!

>
> IME using a predefined set of frequencies with kaffeine is useless, the
> files are badly out of date. In other applications it wouldn't matter
> because there's usually at least one correct channel left in the files,
> and as long as a scanner finds one correct channel it can read
> information about the others from it. Unfortunately kaffeine doesn't
> seem to do that IME.
>

Regards, Alan

[Andy Furniss]

Pinnerite wrote:
> After re-tuning, I've lost all my BBC channels and most of the rest.
> If anyone has successfully done this would they be kind enough to
> send me a copy of their scanfile.dvb file, held at
> /home/yourhomename/.kde4/share/apps/kaffeine or just the:
>
> [dvb-t/uk-CrystalPalace]
>
> section. The signal where I need it is a bit weak but it worked before
> the shift to the new trnsmission frequencies (or whatever the change
> entailed) at the beginning this month.
>
> Thanks in advance.
>

Strange you lost BBC when it's power just got x10, but then it also
changed from 2k to 8k at the same time, maybe that's an issue if kaffine
tries to use 2 (or maybe auto and it's not working properly with your
device).

What is the hardware?

I doubt if anyone will submit a new uk-CrystalPalace till after the 18th
- when all will have x10 power and all be 8k.

I would see what w_scan can find, maybe your distro will have it, if not

http://wirbel.htpc-forum.de/w_scan/w_scan-20120128.tar.bz2

You don't need any initial tuning data.

[Martin Liddle]

On 10/04/2012 05:47, Pinnerite wrote:
The signal where I need it is a bit weak but it worked before
> the shift to the new trnsmission frequencies (or whatever the change
> entailed) at the beginning this month.
>

The only change for Crystal Palace at the beginning of the month was
that the multiplex carrying the BBC channels moved from channel 25- to
channel 23. At the next stage of DSO on the 18th April all the other
multiplexes move channel.

--
Martin Liddle, Tynemouth Computer Services, Chesterfield, Derbyshire,UK
http://www.tynecomp.co.uk

[Java Jive]

That's not true. That multiplex also changed from pre-DSO
configuration and power to post-DSO configuration and power, the
combination of which can throw some improperly built or configured
hardware.
http://www.digitaluk.co.uk/transmitternetwork/tools__and__resources/almanac/installer_newsletters_transmitter_groups2009_pdfs/London_Crystal_Palace_1MO_1_0_FINAL.pdf

Also, analogue ITV1 moved over onto former analogue BBC2's channel for
the duration of the DSO period.

On Tue, 10 Apr 2012 15:47:13 +0100, Martin Liddle
<new...@tynecomp.co.uk> wrote:
>
> The only change for Crystal Palace at the beginning of the month was
> that the multiplex carrying the BBC channels moved from channel 25- to
> channel 23. At the next stage of DSO on the 18th April all the other
> multiplexes move channel.
--

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[Tony Houghton]

In <jm1efr$a9j$1...@speranza.aioe.org>,

Pinnerite <pinnerite-with...@asandco.co.uk> wrote:

> It does but it misses out several stations. The alternative is to disconnect
> my computer and reconnect it at a point in my house where the signal is
> stronger. I have a loft installed ampifier and distribition manager dating
> back to the 70s. It works brilliantly but the lead to where my office is
> causes too much signal loss or maybe S/N ratio deteriorates. Adding extra
> amplification at the computer end doen't seem to help so unless I can frig
> it I'll have to move closer to the loft!

Replacing the cable with a high quality double-screened one might help.
I'd do that if it's practical.

[Pinnerite]

Pinnerite wrote:

> Tony Houghton wrote:
>
>> In <jm0e0r$n6o$1...@speranza.aioe.org>,
>> Pinnerite <pinnerite-with...@asandco.co.uk> wrote:
>>
>>> After re-tuning, I've lost all my BBC channels and most of the
rest.
>>> If anyone has successfully done this would they be kind enough
to
>>> send me a copy of their scanfile.dvb file, held at
>>> /home/yourhomename/.kde4/share/apps/kaffeine or just the:
>>>

I tried adding a UHF pre-amp at the wall socket end to boost the
signal. Tha worked, except that I cannot get BBC3 or BBC4.

Interestingly, I got more channels scanning in daylight hours than
late at night. That's a first for me.

Separately, I re-tuned my Phillips digital TV. All OK except I
cannot get Ceefax / Teletext. Weird.

[Tony Houghton]

In <jm66uv$ovm$1...@speranza.aioe.org>,

Pinnerite <pinnerite-with...@asandco.co.uk> wrote:

> I tried adding a UHF pre-amp at the wall socket end to boost the
> signal. Tha worked, except that I cannot get BBC3 or BBC4.
>
> Interestingly, I got more channels scanning in daylight hours than
> late at night. That's a first for me.

BBC3 and BBC4 "time-share" with CBeebies and CBBC, so if you scanned at
daytime Kaffeine might have missed 3 & 4. Several other channels do
similar time-sharing. You can do another scan in the evening and add any
new channels it finds to its existing list.