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nunhead_man

Posted: Sat Jan 14, 2012 11:48 am

Frequent contributor Joined: 04 Oct 2009 Posts: 143 Location: Near Nunhead Cemetery, one of the earliest examples of the failure of privatisation

Hi All

Given we now have the London dates do we need a London area changeover summary of what to do "sticky" ?

Dates are;

Stage 1 - 4/4/2012
Stage 2 - 18/4/2012

Happy new year to all if the new year is not just a fond (or less fond javascript:emoticon(' Sad

') ) memory

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juwlz

Posted: Sat Jan 14, 2012 12:56 pm

MyStuff Team Joined: 12 Aug 2005 Posts: 9644 Location: Wokingham, Berkshire (Hannington transmitter)

Is London any different to any other region where it's already happened? If not, just search for old threads rather than reinventing the wheel.

Julie

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nunhead_man

Posted: Sun Jan 15, 2012 10:39 am

Frequent contributor Joined: 04 Oct 2009 Posts: 143 Location: Near Nunhead Cemetery, one of the earliest examples of the failure of privatisation

Sure - not so much for me but to help others

I've seen the postings about rebooting etc - could collect them here if would help?

andyfras

Posted: Sun Jan 15, 2012 11:31 am

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

Those of us on Hannington are next I believe. I'm looking forward to it, as we might get a decent signal at last. We're theoretically in a 'no Freeview reception' area here in Fleet (unless you've got the highest gain aerial, group B filter and top-quality mast-head amplifier).

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andyfras

Posted: Wed Feb 08, 2012 9:24 am

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

Hannington has started the switchover today.

Sadly my BBC A mux quality has dropped below 90; much less than the others which are at, or close to, 100. I'm not sure whether this will improve before the next phase of the switchover in two weeks.

mstombs

Posted: Wed Feb 08, 2012 9:44 am

Frequent contributor Joined: 31 Dec 2006 Posts: 559

How cruel - what a thing for them to do to someone who has saved so many Toppies from the scrap heap so so many others can watch Freeview!

The good news for you is that you are probably getting interference into BBC A on C45 from Mux C / ARQ A which is too close on C44+ just for the next couple of weeks.

But then so will everybody else in the same area in this crazy slow-motion DSO process this country is going through. Expect howls of rage in April when all the London users go through the process!

I don't rate your chances of building a selective analogue filter but I know you are good with electronics...

andyfras

Posted: Wed Feb 08, 2012 10:45 am

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

mstombs wrote:

...you are probably getting interference into BBC A on C45 from Mux C / ARQ A which is too close on C44+...

In that case, I would expect that the new 'stronger' BBC A would be upsetting Mux C, but it's not.

mstombs

Posted: Wed Feb 08, 2012 11:46 am

Frequent contributor Joined: 31 Dec 2006 Posts: 559

Agree - so maybe they'll fix it soon - very different transmission standards 8k and 2/3 supposed to be more robust, but maybe 16QAM wins?:-

C45 64QAM 2/3 8k DVB-T 50 kiloWatts
C44+ 16QAM 3/4 2k DVB-T 20 kiloWatts

perhaps 8k needs wider frequency slot?

andyfras

Posted: Wed Feb 08, 2012 12:32 pm

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

It seems that there is a problem with the Hannington transmitter:

http://www.ukfree.tv/txdetail.php?a=SU527568

andyfras

Posted: Wed Feb 08, 2012 1:15 pm

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

They seem to have fixed it.

I am now getting 100 signal quality and 75 signal level on BBC A from Hannington.

Bizman

Posted: Wed Feb 08, 2012 1:23 pm

Frequent contributor Joined: 06 Apr 2010 Posts: 528 Location: Taunton, Somerset

Hannington does seem to be rather feeble on power, my electric kettle uses nearly that much! Very Happy

Once analogue is off in the surrounding areas they will probably up the power. Mendip will be pushing out 100kW after switchover and although I am miles (km) away from the transmitter, I get 100% quality and signal strength on the present 100KW muxes and 99/100% on the others.

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andyfras

Posted: Wed Feb 08, 2012 1:54 pm

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

I spoke too soon; it's gone again, totally this time.

Apparently Arqiva got until 6pm to complete the switchover. I've no idea what would happen if they don't; maybe they get fined?

andyfras

Posted: Wed Feb 08, 2012 2:07 pm

Frequent contributor Joined: 25 Jul 2005 Posts: 2792 Location: Fleet, Hampshire (Hannington)

Now it's back with 100% level and quality - that's more like it!

I've never seen 100% signal level here before. Very Happy

mstombs

Posted: Wed Feb 08, 2012 11:09 pm

Frequent contributor Joined: 31 Dec 2006 Posts: 559

Suggestion elsewhere it was a panel phasing error, giving directional variation - so they had to swap wire around or shorten something to fix? Guess we will never no for sure, just like the rumour on a nearby TX that the fire was caused by a spanner left somewhere in the works (more likely loose connection IMHO)?

gomezz

Posted: Thu Feb 09, 2012 10:44 am

Frequent contributor Joined: 18 Nov 2005 Posts: 3798 Location: Buckingham

The Beckley, Oxford fire?

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