Full Freeview on the Emley Moor (Kirklees, England) transmitter
 | Google Streetview |  | Google map |  | Bing map |  | Google Earth |  | 53.611,-1.666 or 53°36'41"N 1°39'57"W |  | HD8 9TF |
The symbol shows the location of the Emley Moor (Kirklees, England) transmitter which serves 1,550,000 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 Emley Moor (Kirklees, England) mast?
Emley Moor transmitter - Emley Moor transmitter: Possible effect on TV reception week commencing 22/04/2024 Screen may go black on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Emley Moor 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.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Emley Moor transmitter?
BBC Look North (Leeds) 1.9m homes 7.4%
from Leeds LS9 8AH, 22km north-northeast (22°)
to BBC Yorkshire region - 56 masts.
ITV Calendar 1.9m homes 7.4%
from Leeds LS3 1JS, 22km north-northeast (16°)
to ITV Yorkshire (Emley Moor) region - 59 masts.
All of lunch, weekend and 80% evening news is shared with Belmont region
Are there any self-help relays?
| Derwent B | Active deflector | 74 homes | |
| Derwent C | Active deflector | (second level) | |
| Dunford Bridge | Active deflector | 14 km S Huddersfield | 15 homes |
| Hmp Leeds | Transposer | 30 homes | |
| Thixendale | Transposer | 25 km ENE York | 40 homes |
How will the Emley Moor (Kirklees, England) transmission frequencies change over time?
| 1956-80s | 1984-97 | 1997-98 | 1998-2011 | 2011-13 | 5 Feb 2020 | ||||
| VHF | B E T | B E T | B E T | B E T | W T | ||||
| C10 | ITVwaves | ||||||||
| C32 | com7 | ||||||||
| C33 | SDN | ||||||||
| C34 | com8 | ||||||||
| C36 | ArqA | ||||||||
| C37 | C5waves | C5waves | |||||||
| C39 | _local | ||||||||
| C41 | C4waves | C4waves | C4waves | BBCB | BBCB | ||||
| C44 | BBC1waves | BBC1waves | BBC1waves | D3+4 | D3+4 | ||||
| C47 | ITVwaves | ITVwaves | ITVwaves | BBCA | BBCA | ||||
| C48 | ArqB | ArqB | |||||||
| C51tv_off | BBC2waves | BBC2waves | BBC2waves | SDN | |||||
| C52tv_off | ArqA | ||||||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | LLS |
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 Sep 11 and 21 Sep 11.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-5 | 870kW | |
| SDN, ARQA, ARQB, BBCA, D3+4, BBCB | (-7dB) 174kW | |
| com7 | (-12dB) 54.8kW | |
| com8 | (-12.3dB) 51.2kW | |
| Mux 1*, Mux 2*, Mux B*, Mux C* | (-19.4dB) 10kW | |
| Mux A*, LLS | (-22.4dB) 5kW | |
| Mux D* | (-23.4dB) 4kW |
Which companies have run the Channel 3 services in the Emley Moor transmitter area
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Monday, 13 February 2012
D
Denise farnaby9:50 PM
Leeds
Hi This is driving me mad now.My Tv goes off for about 2 hrs a day ,can be anytime but mainly evenings.I can pick up analogue reception for main 5 station while off(transmitted from Tyne Tees I think)but no freeview.I live in Leeds and have great reception usually.Sound goes first and then picture.No weather interference or electric.Can anyone help.Only started 4 weeks ago.Neighbours ok
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Denise's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
J
jb3811:26 PM
Denise farnaby: When you say that the TV goes off are you meaning that if you try to select another freeview channel that nothing happens?
I would like you to try two things (1) the next time it goes off dont touch anything except to take the aerial out and then plug it back in again, and if this makes no difference then (2) switch the set off, wait about a minute or so before powering it up again and see if it comes back on again.
However irrespective of the outcome of these tests could you please indicate the model number of the TV.
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J
jb3811:45 PM
Denise farnaby: Also meant to say that when you are trying the aerial out then in again test, try and observe the TV's screen whilst you are re-inserting the plug to see if the picture briefly comes on then flashes off again, as if it does that can indicate that the signal is slightly too strong and is overloading the tuner, because with you being located at only 11 miles away from the high powered Emley Moor station this is something that can happen dependant on the type of aerial system you have.
If this is the cause then an attenuator will have to be inserted in line with the TV's aerial socket.
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Wednesday, 15 February 2012
T
Tim Searle5:33 PM
Dronfield
S18 1UQ
Sometime over the past few weeks we have lost C48, 51 and 52. They were working fine after switch-over but we don't watch them much so I don't know when they failed. Signal strength is reported by the ETB to be about 76% but quality is zero. However, when I go to install, to start a manual tune its says signal strength 76% quality 100%.
Why should they be different and (more important) how can I get the signal back?
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Tim's: mapT's Freeview map terrainT's terrain plot wavesT's frequency data T's Freeview Detailed Coverage
Tim Searle: See this posting in response to the same question you posed the other day:
Emley Moor digital TV transmitter | ukfree.tv - independent free digital TV advice
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T
Tim Searle5:52 PM
Tim Searle:
Dave, Thanks for this. I somehow failed to find your reply, which seems to fit the bill in timing, before I sent a second post with a bit more detail. This discrepancy between the install signal monitor and the ordinary signal quality one - could the FEC change explain that?
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T
Tim Searle8:05 PM
Is there a connection between the FEC and the Mode or the Guard Interval? If so, to what values should I set them? They have always been on auto in the past.
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Tim Searle: I don't know the answer to your questions, perhaps one of the pros can shed some more light on it.
It is speculation on my part that the FEC change on the three multiplexes in question is the reason that they are no longer working on your TV.
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Thursday, 16 February 2012
M
Mike Dimmick2:34 PM
Tim Searle: There are five parameters for DVB-T transmission:
- Bandwidth
- Number of carriers/symbol time ('Mode')
- Modulation
- Forward Error Correction rate (FEC)
- Guard Interval
The bandwidth is the range of frequencies used for each multiplex. In the UK, and in the UHF band in Europe, this is 8 MHz to match the width of an analogue transmission.
The symbol time, which implies the number of carriers, is the guaranteed number of time ticks a pattern of signals (a 'symbol') is on air before it changes to the next pattern. Before switchover this was 2K, after it is 8K.
Modulation indicates how many different values a carrier can have. QPSK is four (two bits), 16QAM 16 (four bits), 64QAM 64 (six bits).
Forward Error Correction is a measure of the proportion of bits that are input and output compared to the number carried on air. Supported values are 1/2, 2/3, 3/4, 5/6 and 7/8.
The guard interval is some extra time, as a proportion of the symbol time, that the symbol is held for, to allow for echoes or multiple synchronized transmitters using the same frequency. The values are 1/4, 1/8, 1/16 and 1/32. All UK transmissions currently use 1/32. The further away an echo is expected to come from, the more time is needed to ensure it doesn't fall into the guaranteed symbol time.
At Emley Moor, all SD transmissions use an 8 MHz bandwidth, 8K mode, 64QAM modulation and a 1/32 guard interval. The PSBs use 2/3 FEC rate, while the COMs now use 3/4. It gives more capacity, but is less robust - it needs more signal, compared to noise and interference, than the PSB mode.
You shouldn't actually need to tell the box all this information, as it is all carried in many Transmission Parameter Signalling carriers that repeat many, many times per second. They use a very simple robust encoding which should be receivable even if nothing else is, and the same encoding is used whatever the other parameters (OK, for different numbers of carriers, and different bandwidths, they are found at different frequencies and held for a different length of time).
HD uses DVB-T2 which has a few more parameters, and a few more values for the parameters given, but the basics are still the same. Fully described, the HD transmissions are DVB-T2 8 MHz, 32K extended mode, 256QAM rotated, FEC 2/3, GI 1/128, Pilot Pattern 7. It requires roughly the same signal strength/quality as the SD PSB muxes.
Most boxes cope with a change in modulation depth, FEC and guard interval without needing a retune, but yours obviously doesn't. Since it appears with 100% quality in the Manual Retune screen with the values set to Auto, it can probably pick up the values from TPS when tuning, it just doesn't pick them up when you select a previously-stored service. It might take slightly longer to change channels if it had to wait to check TPS, I suppose.
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Friday, 17 February 2012
D
David Mansell4:12 PM
Todmorden
I get Freeview via the Todmorden relay. I noticed recently, while scrolling the channel list, that the two "Rabbit" channels have vanished from my list. I'm not going to miss them but does that mean we might get another couple of channels to replace them? ITV3 and 4 would be nice and make up a bit for the scant choice that those of us on Freeview "Lite" get.
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David's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
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