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uk.tech.digital-tv (Digital TV - General) (uk.tech.digital-tv) Discussion of all matters technical in origin related to the reception of digital television transmissions, be they via satellite, terrestrial or cable. Advertising is forbidden, with no exceptions.

Crystal Palace Issues



 
 
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  #41  
Old April 1st 18, 10:43 AM posted to uk.tech.digital-tv
Andrew[_6_]
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Posts: 88
Default Crystal Palace Issues

On 31/03/2018 11:18, Max Demian wrote:
On 31/03/2018 07:32, Scott wrote:
On Fri, 30 Mar 2018 22:26:04 +0100, Dave W
wrote:


I too have lost channels owing to the abandonment of the sensible
grouped channel system. I don't know why they couldn't have put the new
phone allocation at the top of the UHF band instead of the middle, but
maybe the high channels are useful for fill-in transmitters.

My understanding is that they did exactly this by reallocating the top
part of the TV band for telephony.* My understanding is that channels
55 and 56 are in the centre of the new 5G band where there is a gap to
keep the transmitted and received mobile signals apart; and that slice
is temporarily used for broadcasting.

Mark can keep us right if necessary.


If there are/will be telephone signals below, as well as above 55/56,
what is the point in all those at800 filters they distributed a few
years ago and that most people will have lost by now?

What will happen to all those illegal FM stations that seemed to
broadcast from many social housing tower blocks ?. Have they all
moved to YouTube and faceache ?.
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  #42  
Old April 1st 18, 10:47 AM posted to uk.tech.digital-tv
Andrew[_6_]
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Posts: 88
Default Crystal Palace Issues

On 31/03/2018 17:11, Brian Gaff wrote:
Being called Clickshould it not be on bbc3 online?
That is the normal logic of the BBC. I had the misfortune to attempt to
view bbc 3 the other day, infantile crap.
Brian


Well it is aimed at slightly larger toddlers.
  #43  
Old April 1st 18, 10:53 AM posted to uk.tech.digital-tv
Andrew[_6_]
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Posts: 88
Default Crystal Palace Issues

On 31/03/2018 17:09, Brian Gaff wrote:
They really have made a complete mess of things, when you look at it.
I mean all we need now is some bright spark to spot how unused the military
air band is and we will have yet another non standard frequency for
something. Sod the armed forces, let they use android phones.
Brian


Isn't the reverse happening ?. I thought the Tetra radio system
users were moving to the Joe Public mobile phone networks ?.

If this really is the case, will all the mobile not-spots
suddenly get a better coverage, and what will happen to the
redundant Tetra kit ?.
  #44  
Old April 1st 18, 01:42 PM posted to uk.tech.digital-tv
Andy Burns[_12_]
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Posts: 573
Default Crystal Palace Issues

Andrew wrote:

I thought the Tetra radio system users were moving to the Joe Public
mobile phone networks ?.


Yes, ESMCP will use EE's 4G network

If this really is the case, will all the mobile not-spots
suddenly get a better coverage


EE is required to provide extra coverage, so that should be a general
benefit.

and what will happen to the redundant Tetra kit ?.


Come back Dolphin, all is forgiven?


  #45  
Old April 1st 18, 02:36 PM posted to uk.tech.digital-tv
Robin[_8_]
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Posts: 506
Default Crystal Palace Issues

On 01/04/2018 14:42, Andy Burns wrote:
Andrew wrote:

I thought the Tetra radio system users were moving to the Joe Public
mobile phone networks ?.


Yes, ESMCP will use EE's 4G network

If this really is the case, will all the mobile not-spots
suddenly get a better coverage


EE is required to provide extra coverage, so that should be a general
benefit.

and what will happen to the redundant Tetra kit ?.


Come back Dolphin, all is forgiven?


Do you happen to know if they've cracked the "[Don't] shoot" issue when
used in "press to talk" mode?

--
Robin
reply-to address is (intended to be) valid
  #46  
Old April 1st 18, 02:46 PM posted to uk.tech.digital-tv
Andy Burns[_12_]
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Posts: 573
Default Crystal Palace Issues

Robin wrote:

Do you happen to know if they've cracked the "[Don't] shoot" issue when
used in "press to talk" mode?


I can ask ...


  #47  
Old April 1st 18, 04:23 PM posted to uk.tech.digital-tv
Bill Wright[_3_]
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Posts: 2,448
Default Crystal Palace Issues

On 01/04/2018 11:43, Andrew wrote:

If there are/will be telephone signals below, as well as above 55/56,
what is the point in all those at800 filters they distributed a few
years ago and that most people will have lost by now?

What will happen to all those illegal FM stations that seemed to
broadcast from many social housing tower blocks ?. Have they all
moved to YouTube and faceache ?.


What's that got to do with it?

Bill
  #49  
Old April 3rd 18, 03:37 PM posted to uk.tech.digital-tv
John[_21_]
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Posts: 74
Default Crystal Palace Issues

On Friday, 30 March 2018 19:16:03 UTC+1, wrote:
On 30/03/2018 14:36, John wrote:
I dutifully retuned, and was shocked to find a load of channels missing! Especially annoying was the loss of BBC News HD and BBC Four HD.



I live in a Central London tower block and have my own Group A aerial pointing at Crystal Palace/Croydon at rooftop level and a 70m cable run down to my living room.


The obvious thing would be to remove the existing Group A aerial and replace it with a Group W one. However, I worry about its lesser sensitivity at the Group A end.


If you are in central London you will be swamped with CP signal, even
allowing for beam tilt (tx looks downwards a bit).


Just a moment ago, the aerial chappie sent by Digital TV did some readings in my living room with his bright yellow meter reader. No issues with the Group A end, and zero reading at 55 and 56.

We went to the roof and with a glance, he confirmed what I told him, ie that I had a Group A aerial.

He made me sign a form and will tell his firm to send two guys to swap out my Group A and replace it with a Group W. No charge to me! Yippee!


The rooftop is so high (effectively the 22nd floor) that I fear
interference from Bluebell Hill and Hannington. Is this something that
I ought to fear in the era of DTT? Or could it mean being able to see
local news from different areas?

No they don't use the same channels except for the new 55/56 allocation,
and you can't do anything about that.


If the new aerial, when eventually fitted, is able to get 55/56 from more than one source, will this cause issues?



Is an alternative getting a Group C/D aerial and combining it with the existing Group A? Advantages/disadvantages?


Just don't.


I mentioned this and the chap was not having that! No explanation why.




I see from my Humax PVR that it sees no signal whatsoever from 55 or 56 from the existing Group A. I am not surprised.


Your 70m cable will lose more on the higher channels, especially if it
has rubbed anywhere and got a bit of damp in it. That could easily
explain the problem.


When they come to swap the aerials, I shall ask them to have a look for water ingress. This was a problem with my previous Group A aerial The top part of the cable had to be chopped off and replaced. As a result, they put far more tape on the replacement to, hopefully, keep the water out.


The CP signal will be so strong that the aerial could well be faulty and
still provide enough signal to seem OK. But that would show up on 55/56.

Are you sure there isn't a Gp A filter anywhere, fitted to stop 4G problems?


I should be surprised, as the last time my aerial was fitted, the bloke simply fitted what came out of the box. I do not recall him mentioning anything like that.

Thanks a lot, Bill.


Bill


  #50  
Old April 3rd 18, 03:40 PM posted to uk.tech.digital-tv
John[_21_]
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Posts: 74
Default Crystal Palace Issues

On Saturday, 31 March 2018 01:11:06 UTC+1, wrote:
On 31/03/2018 00:33, Dave W wrote:
On 30/03/2018 23:13, Andy Burns wrote:
Dave W wrote:

I don't know why they couldn't have put the new
phone allocation at the top of the UHF band instead of the middle

Channels 61 to 69 a the top end have already been given over to 4G,
now they're coming back for a second bite for 5G from 49 to 60, TV has
to be squeezed in 21 to 48.


Does that mean that channels 55 & 56 are only temporary, and when we
have to tune lower down maybe a group 'A' aerial will work again?


They are temporary until after the next but one election, at which point
terrestrial broadcasting will be reduced to one mux carrying the five
basic channels on a national SFN.
Objectors will be hushed and told that since 'everyone' has fast
internet and/or satellite they should use that. Their comments will not
be reported by the mainstream media. Since from 2020 onwards all
internet messages will be scrutinised for hate speech by a robot sensor
the only available medium will be the walls of public lavatories, the
graffitists wearing a balaclava and Corbyn mask. Dissent about the
effective end of terrestrial broadcasting will be classed as hate speech
(Public Order Act 2022) and anyone speaking out of place will be locked up.

Bill


Hah-hah-hah!

John
 




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