Full Freeview on the Hannington (Hampshire, England) transmitter
Brian Butterworth first published this on - UK Free TV
Google Streetview | Google map | Bing map | Google Earth | 51.308,-1.245 or 51°18'28"N 1°14'43"W | RG26 5UD |
The symbol shows the location of the Hannington (Hampshire, England) transmitter which serves 470,000 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.
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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
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Hannington 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
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Hannington transmitter?
BBC South Today 1.3m homes 4.9%
from Southampton SO14 7PU, 46km south-southwest (194°)
to BBC South region - 39 masts.
ITV Meridian News 0.9m homes 3.4%
from Whiteley PO15 7AD, 48km south (179°)
to ITV Meridian/Central (Thames Valley) region - 15 masts.
Thames Valley opt-out from Meridian (South). All of lunch, weekend and 50% evening news is shared with all of Meridian+Oxford
How will the Hannington (Hampshire, England) transmission frequencies change over time?
1984-97 | 1997-98 | 1998-2012 | 2012-13 | 18 Apr 2018 | |||||
E | E | E | B E T | W T | |||||
C32 | com7 | ||||||||
C34 | com8 | ||||||||
C35 | C5waves | C5waves | |||||||
C39 | BBC1waves | BBC1waves | BBC1waves | +BBCB | BBCB | ||||
C40 | SDN | ||||||||
C41 | SDN | ||||||||
C42 | ITVwaves | ITVwaves | ITVwaves | D3+4 | D3+4 | ||||
C43 | ArqA | ||||||||
C44 | ArqA | ||||||||
C45 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
C46 | ArqB | ||||||||
C47 | ArqB | ||||||||
C51tv_off | _local | ||||||||
C55tv_off | com7tv_off | ||||||||
C56tv_off | COM8tv_off | ||||||||
C66 | C4waves | C4waves | C4waves |
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 8 Feb 12 and 22 Feb 12.
How do the old analogue and currrent digital signal levels compare?
Analogue 1-4 | 250kW | |
Analogue 5 | (-6.2dB) 60kW | |
BBCA, D3+4, BBCB | (-7dB) 50kW | |
com7 | (-8.3dB) 36.7kW | |
com8 | (-9.8dB) 26.2kW | |
SDN, ARQA, ARQB | (-10dB) 25kW | |
Mux 1*, Mux 2*, Mux A*, Mux B* | (-11dB) 20kW | |
Mux C*, Mux D* | (-14dB) 10kW |
Which companies have run the Channel 3 services in the Hannington transmitter area
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Thursday, 20 January 2011
M
Mike Dimmick11:56 PM
Reading
Ann - sorry to come back two weeks later! It's actually Mux 2 and A which use the 64QAM 2/3 mode. This mode requires *more* signal, relative to noise, than the 16QAM 3/4 mode used by multiplexes 1, B, C and D.
ITV and S4C didn't change modes on their multiplexes in 2002, after ITV Digital collapsed and the BBC-led Freeview consortium took over their previous multiplexes. The BBC, operating Mux 1 and B, and Crown Castle, who got Mux C and D, were encouraged to change mode to improve coverage and reliability, at the cost of losing one-quarter of the capacity.
For most people, multiplexes 2 and A therefore are the least reliable, but it does depend on the clashes between channels. As you say, you're very close to Horndean. While it uses a different polarization - vertical rather than horizontal - the aerial does still pick up some signal from the other polarization. The spec sheet may refer to 'cross-polar rejection', which is the difference between the amount of signal picked up when the aerial matches the transmission, and when it doesn't. Horndean's not very powerful but you're only half a mile away, whereas you're nearly 15 miles from Midhurst and there are two hills in the way, completely blocking line-of-sight. Horndean frequencies clash with Midhurst multiplex 1, A and C. After switchover Horndean multiplexes will clash with Midhurst multiplex A and D.
Digital UK's predictor algorithm allows for 16 dB of cross-polar rejection, and 16 dB of rejection of signals from another direction, but oddly caps the total contribution from both sources at 16 dB. Most real aerials have at least 20 dB of cross-polar rejection and also have good directional response, so DUK's prediction may turn out to be too pessimistic.
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Mike's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Friday, 21 January 2011
G
GStrickland4:14 PM
Andover
We moved to Andover Hampshire in June of last year and since we have been in this house, we have had interference problems on all channels (digital and analagoue). We receive the signal from the Hannington transmitter.
Following many complaints to the BBC (who are now responsible for the reporting of Interference problems), OfCom attended site and did some signal measurements from our aerial and the results were extremely poor. The engineer also took independant measurements outside in the road using his own aerial and there was very little change - still bad.
His accessment was that because the signal is so bad, any nearby bit of electrical equipment (Boiler, room thermostat etc) could cause this interference.
What possible course of action can be taken to get this signal problem resolved and whom should I approach? The BBC? Arqiva? I object strongly to having to pay for a TV license when we are unable to watch any programme without losing the picture and sound mid-way through for 30 seconds or more.
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GStrickland's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Sunday, 23 January 2011
T
TVtuner12:00 PM
Sue B,
Hook is notoriously bad for a digital signal at the moment.
The majority of residents have had high gain aerials fitted for the London transmitter as it tends to offer stronger digital reception. From Hannington the signal is likely to vary more as it is so borderline.
Either way there is no guarantee of trouble free reception until March 2012 - unless you change to Freesat.
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M
Mike Dimmick11:28 PM
Reading
GStrickland: looking at your location, I'd say the problem is that the line-of-sight signal path from the transmitter is very, very close to the hills. It may be obstructed at a couple of points. There's a strong chance of getting reflections that weaken the signal.
However, Digital UK's predictor does predict very good results both now and after switchover, so there could be another issue, some form of electrical interference from streetlighting or neighbouring houses. You're pretty close to the transmitter so even a reduced signal should be relatively strong.
There is absolutely nothing you can do if the issue is that the signal is being attenuated too much by the terrain and/or by reflections from terrain or structures. If it's nearby structures you could try raising the aerial. The estimated coverage level of terrestrial transmission is 98.5% of the population; the other 1.5% have to make their own arrangements. As I say, though, DUK (which is a front for the broadcasters) reckon that you are covered.
The man from Ofcom should have investigated other possible sources of interference. I believe they can require the owners of any interfering equipment to get it fixed.
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Mike's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 24 January 2011
G
GStrickland7:39 PM
Andover
Mike,
Indeed Ofcom do have the authority (if that's the right word) to request owners of any faulty equipment to have it fixed.
I guess we should have taken note that all the immediate neighbours have satellite dishes - and now we know why. It just didn't occur to us to ask about the TV signal strength when viewing the house!
The signal strength was measured by the Ofcom engineer both within the house and outside in the road. In both locations the strength was between 33% and 37% and way below what he expected for the area. He explained that with the signal strength so low there was insufficient headroom in the signal and therefore it would be prone to even the very slightest of interference.
Without a very significant increase of the signal strength - and thus more headroom in the signal, our viewing of analogue and digitial TV just isn't possible where we are.
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GStrickland's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Thursday, 27 January 2011
HANNINGTON transmitter - Analogue BBC TWO Weak Signal from 14:47 today to 14:48 today [BBC] Over the next week Hannington main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
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HANNINGTON transmitter - Analogue BBC TWO Weak Signal from 14:47 today to 14:48 today [BBC] Over the next week Hannington main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
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Friday, 28 January 2011
HANNINGTON transmitter - Analogue BBC TWO Weak Signal from 14:47 yesterday to 14:48 yesterday [BBC] Over the next week Hannington main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
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HANNINGTON transmitter - Analogue BBC TWO Weak Signal from 14:47 yesterday to 14:48 yesterday [BBC] Over the next week Hannington main transmitter: TV (analogue) Possible weak signal, TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
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HANNINGTON transmitter - Analogue BBC TWO Weak Signal from 14:47 yesterday to 14:48 yesterday [BBC]
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