Full Freeview on the Hannington (Hampshire, England) transmitter
 | 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.
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Hannington (Hampshire, England) transmitter._______
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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Monday, 18 April 2011
G
Gary11:19 AM
Hook
I cannot get a decent signal quality on Mux2 from Hannington, signal strength is good greater than 90% but quality is just 5% All other Muxes and analog appear OK. What could be causing this? Could interference from another transmitter eg Guildford give me problems on just the one mux?
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Gary's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Gary: You are not predicted to get Multiplex 2 reception until next year. The signal is too weak.
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G
Gary4:56 PM
Hook
Yes, but why is the signal strenth reported as high, usually 100% but the quality so low?
Thanks
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Gary's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
Gary: It is the quality indication that is important, not the signal strength. Your amplification may be fooling the circuits into thinking there is a digital carrier, but all you have is noise.
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M
Mark G7:47 PM
Camberley
Hi Gary,
Did Mux 2 work for you previously? If so, you're suffering the same as me - I am convinced something has changed recently for this Mux from Hannington. As Briantist said above, could be a consequence of other switchovers, but I'm thinking it also could be related to recent engineering work, perhaps something subtle changed at the mast for this Mux, even perhaps relating to the already-present 'null' which maybe now harsher for this than others Muxes...
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Tuesday, 19 April 2011
Mark G: Just to be picky for a moment, there is not such thing as a "null" - most digital transmitters have radiation patterns, and these are subtly configured in one or five degree steps.
The ones that are not "state secrets" are shown on the BBC FOI transmitter data - first draft | ukfree.tv - independent free digital TV advice page.
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Mark G11:17 AM
Camberley
Thanks Briantist - I didn't know that! Any idea why the ones there are 'public' yet Hannington does seem to be 'secret'?
Looks like each channel is configured independently, so maybe for other switchover-related reasons they purposefully adjusted the pattern for Mux 2. I noticed on the postcode prediction that there are some 'change' events later this year, that don't materially change my reception prediction - any idea what they are?
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
M
Mike Dimmick2:51 PM
Mark G: It's not possible to change radiation patterns independently on an aerial. If the radiation pattern is significantly different for different channels, it's because a different aerial or set of aerials is used, or lower power levels feeding one element relative to the others. That's not going to be at all common after switchover. It might be slightly different on different channels using the same aerials and same power levels if they've taken account of how the aerial's radiation pattern changes with frequency, but that's a fundamental characteristic of the aerial's design, not something that can be tuned.
All digital transmissions from Hannington come from the panels just below the top of the mast. They're mounted on the north-west corner and are three sets of panels, pointing due west, slightly west of north, and slightly west of due south. The panels' radiation patterns are quite wide but not much beyond 90° - and the mast itself is in the way.
The changes so far for switchover have entailed replacing the top aerial used currently for analogue, and for digital after switchover, possibly changing how much analogue signal you're receiving. High signal levels can overload amplifiers and the gain control components in the tuner, which cause a problem called intermodulation or cross-modulation - parts of a signal on one channel getting copied into nearby channels. (It doesn't damage the amp, but it distorts the signals.) These intermodulation products cause extra noise. If you have an amp or booster, try removing it - reception is going to be difficult because of Guildford analogue anyway, and the amp will amplify Guildford analogue as much as it amplifies Hannington digital.
The reception change events are due to other distant transmitters switching over and either beginning to use those frequencies for the first time, releasing them, or using them for digital rather than analogue.
The change to channel 40 (Mux A) in September is likely to be Sutton Coldfield's switchover - currently it carries BBC Two analogue on C40 and on 21 September, it becomes the high-power HD multiplex. Despite the maximum power being only one-fifth the maximum power of analogue, digital signals do more harm to one another and that's reflected in Gary's prediction - a drop of 2% in probability.
You're further to the south-east, so your reception is affected more by fringe reception of Sandy Heath. Belmont's switchover on 17 August frees up C48 so ArqB at Sandy Heath can then move to that frequency on 14 September. Sandy Heath has to wait until Hemel Hempstead Mux 1 gets out of the way (also on 14 September), which presumably can't happen until after Sutton Coldfield/Emley Moor DSO 1.
This is all in order to improve ArqB on C48, which has no direct impact on Hannington. On the same day, Sandy Heath Mux C moves from C40 to C67 (where ArqB had just come from). This is for the reciprocal impact on BBC B at Sutton Coldfield.
The improvement on Mux 1 (C50) in September is more straightforward: Sutton Coldfield stops using it (currently C4 analogue). It then deteriorates again in November when Tacolneston starts using it for ArqB. I'm not sure whether it starts at lower power and increases to full power in 2012, or whether that change is due to the DTT clearance programme, which moves transmitters from C62 to C50 in order to release C62 for mobile phones.
You're probably thinking that these transmitters are a long way off, and they are - over the horizon, mostly. Signals still bounce off the atmosphere, particularly at night, and when the weather conditions are right. The DUK predictor tries to take account of all this. Besides, just because a signal is not strong enough to watch doesn't mean it isn't strong enough to interfere.
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Mark G5:43 PM
Camberley
Mike,
Thank you so much for your incredibly helpful and very interesting post. That's exactly the info I was interested to know about the changes coming over the next year.
More importantly - I'd never even thought of turning down the gain on my variable mast amp. I just did that, and magically I now have good quality reception on all muxes, with a very strong signal on the recently unreceivable Mux 2! Oddly, back in 2007 I had pretty rough reception without strong amplification, so I guess other things have changed in the meanwhile. Looks like I was indeed getting analogue overload somehow after the recent Hannington mast improvements.
Many thanks for all the help here - much appreciated. I'll try later completely removing the amp (I just turned down the gain a bit for now) - but am conscious that when it's not beautifully sunny I may need just a little amplification anyway.
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
HANNINGTON transmitter - Analogue BBC ONE Weak Signal from 16:41 today to 16:46 today BBC ONE Weak Signal from 16:26 today to 16:30 today [BBC]
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