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Freeview Light on the Patcham (Brighton and Hove, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps50.868,-0.128 or 50°52'6"N 0°7'42"Wsa_postcodeBN1 8SE

 

The symbol shows the location of the Patcham (Brighton and Hove, England) transmitter which serves 4,300 homes. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.

Are there any planned engineering works or unexpected transmitter faults on the Patcham (Brighton and Hove, England) mast?

Patcham transmitter - Patcham transmitter: Possible effect on TV reception week commencing 18/11/2024 Screen may go black on some or all channels Digital tick


Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
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Which Freeview channels does the Patcham transmitter broadcast?

If you have any kind of Freeview fault, follow this Freeview reset procedure first.

Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C29 (538.0MHz)141mDTG-14W
Channel icons
1 BBC One (SD) South East, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 16 others

PSB2
D3+4
 H max
C31 (554.0MHz)141mDTG-14W
Channel icons
3 ITV 1 (SD) (Meridian (South Coast micro region)), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (Meridian south coast), 71 That’s 60s,

PSB3
BBCB
 H max
C37 (602.0MHz)141mDTG-14W
Channel icons
46 5SELECT, 101 BBC One HD South East, 102 BBC Two HD England, 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

H/V: aerial position (horizontal or vertical)

Are you trying to watch these 44 Freeview channels?

the effected channels
the effected channels
the effected channels
the effected channels

The Patcham (Brighton and Hove, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: U&Yesterday, 4seven, 5Action, 5STAR, 5USA, Al Jazeera Eng, Al Jazeera English, Blaze, Blaze +1, Challenge, Channel 5 +1, DMAX, E4 Extra, YAAAS!, Film4 +1, Food Network, FRANCE 24 (in English), GREAT! action, GREAT! christmas, GREAT! movies, GREAT! romance mix, HGTV, HobbyMaker, ITV2 +1, ITV3 +1, ITV4 +1, ITVBe +1, Legend, PBS America, Quest +1, Quest Red, Really, Sky Mix, Sky News, Talking Pictures TV, That's 90s, That's TV 2, Together TV, TRUE CRIME, TRUE CRIME XTRA, U&Dave, U&Dave ja vu, U&Drama +1, U&W.

If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.

Which BBC and ITV regional news can I watch from the Patcham transmitter?

regional news image
BBC South East Today 0.8m homes 3.2%
from Tunbridge Wells TN1 1QQ, 40km northeast (41°)
to BBC South East region - 45 masts.
regional news image
ITV Meridian News 0.9m homes 3.6%
from Whiteley PO15 7AD, 79km west (270°)
to ITV Meridian (South Coast) region - 39 masts.
All of lunch, weekend and 50% evening news is shared with all of Meridian plus Oxford

How will the Patcham (Brighton and Hove, England) transmission frequencies change over time?

1984-971997-981998-20122012-1319 Jul 2018
B E TB E TB E TB E TA K T
C29BBCA
C31D3+4
C37BBCB
C40BBC2wavesBBC2wavesBBC2waves
C43ITVwavesITVwavesITVwavesBBCA
C46BBC1wavesBBC1wavesBBC1wavesBBCB
C50tv_offC4wavesC4wavesC4wavesD3+4

tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 7 Mar 12 and 21 Mar 12.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 69W
BBCA, D3+4, BBCB(-6.9dB) 14W

Which companies have run the Channel 3 services in the Whitehawk Hill transmitter area

Aug 1958-Jan 1992Southern Television
Jan 1982-Dec 1992Television South (TVS)
Jan 1993-Feb 2004Meridian
Feb 2004-Dec 2014ITV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Patcham was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Comments
Sunday, 19 June 2011
Dave
sentiment_satisfiedSilver

5:02 PM
Brighton

So only 14w when Patcham goesdigital...how can this be enough compared to 69w analogue where portable reception is not great with me at the moment

Will there be any testing before March 7th ??

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Dave's 126 posts GB flag
Dave's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Monday, 20 June 2011
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

3:13 PM

Dave: Because they're not actually comparing like with like.

It's stated that analogue transmissions require 43 dB of signal-to-noise ratio - about 20,000 times the power from the signal compared to the interference - for perfect reception.

Simulations show that error-free digital reception only requires 17.3 dB signal-to-noise ratio - about 0.27% of the analogue difference. However, this is the absolute minimum required: any lower, and the picture and sound start to break up. The broadcasters' statistics show that, to provide reliable results, the signal needs to be about 12.8 dB higher. They've also added about 6 dB of fudge factor (i.e. nearly 4x power levels), making for 36 dB in all.

This 36 dB of signal-to-noise ratio is 7 dB less than the required analogue level, so in general, levels have been set 7 dB lower than the analogue levels, or one-fifth of analogue power. This is the same right across the country, except that the south-east coast transmitters have been set higher to provide extra resilience to signals from continental Europe, or perhaps reflecting better aerial systems that send relatively less signal overseas.

Experience seems to be showing that the 6 dB fudge factor is unnecessary and levels could have been set lower. In effect, the digital coverage areas are actually larger than the analogue ones.

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Mike Dimmick's 2,486 posts GB flag
Dave
sentiment_satisfiedSilver

9:25 PM

Ok interesting and informative Mike thanks :). All made clear now !

Shows how wasteful analogue transmission is

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Dave's 126 posts GB flag
Sunday, 17 July 2011
Briantist
sentiment_very_satisfiedOwner

7:13 PM

Dave: As the transmitter will be using the old analogue channel allocations (C43, C46, C50) for Freeview, not testing is possible.

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Briantist's 38,915 posts GB flag
Tuesday, 26 July 2011
Dave
sentiment_satisfiedSilver

10:08 PM

What about Ch 40, a clear channel after DSO or not really ?




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Dave's 126 posts GB flag
Wednesday, 27 July 2011
Dave
sentiment_satisfiedSilver

1:00 PM

Oh right ok would be good to have another MUX on there even local community tv perhaps ?! PTV !

More HD channels would make more sense also

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Dave's 126 posts GB flag
Briantist
sentiment_very_satisfiedOwner

1:07 PM

Dave: Ah, I think you misunderstand. The purpose of the DDR is to remove bandwidth from television services, for example for 4G mobile data services.

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Briantist's 38,915 posts GB flag
Dave
sentiment_satisfiedSilver

1:43 PM

Yes but I thought reading that thread maybe we may get other tv services also ??

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Dave's 126 posts GB flag
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

2:48 PM

Dave, Briantist: C40 will now be retained for TV broadcasting, along with C39, replacing C61 and C62 which are to be released for 4G. This change happened after most of the plans were made, so they're being redone.

Because the retained channels are in a different aerial group from those being released, they're actually moving allocations of C61 to C49 and C62 to C50 (in general, though it depends on interference). To make this possible, some sites allocated C50 move to C40 and C49 to C39, if they would interfere. It does depend on the aerial groups for the transmitters as well.

It's possible that Patcham's allocations may change before switchover to accommodate changes at other sites, or that C40 gets used by one of the main transmitters, preventing its use here.

Other local TV services are likely to only be available from the main transmitter sites. Certainly the tentative plans published as part of Ofcom's consultation several years ago - based on unfinished plans for the main multiplexes - only included main sites.

For the postcode you provided previously, it looks like Whitehawk Hill would be a reasonable option after switchover, though Patcham is the best option.

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Mike Dimmick's 2,486 posts GB flag
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