Full Freeview on the Oxford (Oxfordshire, England) transmitter
Brian Butterworth first published this on - UK Free TV
Google Streetview | Google map | Bing map | Google Earth | 51.790,-1.179 or 51°47'25"N 1°10'46"W | OX3 9SS |
The symbol shows the location of the Oxford (Oxfordshire, England) transmitter which serves 410,000 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
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Oxford 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 Oxford transmitter?
BBC South (Oxford) Today 0.4m homes 1.6%
from Oxford OX2 7DW, 6km west-southwest (258°)
to BBC South (Oxford) region - 6 masts.
BBC South (Oxford) Today shares 50% content with Southampton service
ITV Meridian News 0.9m homes 3.4%
from Whiteley PO15 7AD, 102km south (182°)
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 Oxford (Oxfordshire, England) transmission frequencies change over time?
1950s-80s | 1984-97 | 1997-98 | 1998-2011 | 2011-13 | 2013-18 | 2013-17 | 23 May 2018 | ||
VHF | C/D E | C/D E | C/D E | C/D E | C/D E T | W T | W T | ||
C2 | BBCtvwaves | ||||||||
C29 | SDN | ||||||||
C31 | com7 | com7 | |||||||
C37 | com8 | com8 | |||||||
C41 | BBCA | ||||||||
C44 | D3+4 | ||||||||
C46 | _local | ||||||||
C47 | BBCB | ||||||||
C49tv_off | C5waves | C5waves | |||||||
C50tv_off | SDN | SDN | |||||||
C51tv_off | LOX | LOX | |||||||
C53tv_off | C4waves | C4waves | C4waves | +BBCA | +BBCA | +BBCA | |||
C55tv_off | ArqB | ArqB | ArqB | com7tv_off | |||||
C56tv_off | COM8tv_off | ||||||||
C57tv_off | BBC1waves | BBC1waves | BBC1waves | BBCB | BBCB | BBCB | |||
C59tv_off | -ArqA | -ArqA | -ArqA | ||||||
C60tv_off | ITVwaves | ITVwaves | ITVwaves | -D3+4 | -D3+4 | -D3+4 | |||
C62 | SDN | ||||||||
C63 | BBC2waves | BBC2waves | BBC2waves |
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 14 Sep 11 and 28 Sep 11.
How do the old analogue and currrent digital signal levels compare?
Analogue 1-4 | 500kW | |
BBCA, D3+4, BBCB | (-7dB) 100kW | |
SDN, ARQA, ARQB | (-10dB) 50kW | |
Analogue 5 | (-11dB) 40kW | |
com8 | (-14.7dB) 17.1kW | |
com7 | (-14.8dB) 16.4kW | |
Mux 1*, Mux 2*, LOX | (-17dB) 10kW | |
Mux C*, Mux D* | (-18dB) 8kW | |
Mux A*, Mux B* | (-19.2dB) 6kW |
Which companies have run the Channel 3 services in the Oxford transmitter area
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Friday, 21 June 2013
@Dave, thanks for getting back to me. No. There's been no development on any estates near me. I don't understand how high ground could affect some channels and not all channels, and even then, only in certain weather conditions, that seems odd to my technical brain.
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A
Algy9:11 PM
Thanks Dave for the explanation however, I wonder if it might be Icomb Hill that is causing the problem.
Algy.
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Saturday, 22 June 2013
Algy: Icomb Hill uses different channels to Oxford and therefore couldn't possibly be the issue.
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Brennig: The high ground means that you may not have line-of-sight, owing perhaps to objects on the ground. Also, that high ground appears to be in your first Fresnel zone (see the terrain plot and look-up Fresnel Zone).
Different frequencies get refracted to differing degrees due to travelling through objects, hence not all channels are received at exactly the same level even though they are being radiated from the same point.
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Monday, 24 June 2013
P
Paul7:47 AM
Sometime a bad connection ( for example a broken cable or loose plug ) can cause loss of some frequencies while others work OK.
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Wednesday, 26 June 2013
M
MH8:29 AM
Quick update on the deterioration and loss of C59 signal that I posted about earlier. Called out aerial installers to check things out.
No problem at all with the aerial (very good signal) and cable from aerial to loft distribution amplifier replaced - although no signs of water).
Signal strength now strong with good quality on all tv's in the house. Things have never been this good; makes me wonder if poor quality cable was used when by previous installer.
Another case of cable being the problem.
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Thursday, 27 June 2013
P
Paul8:02 AM
Thanks for telling us. It's nice to hear when a problem is resolved
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Friday, 28 June 2013
G
Geoffrey Ferres10:18 PM
Over the last three weeks have lost the ITV3 group of channels and csnnot see any explanation from previous posts.
Have tried retune on numerous occasions.
I live off the Botley Rosd in Oxford.
Previous posts suggest 4G is irrelevant.
We access Freeview through an aerial, not cable or satellite.
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Saturday, 29 June 2013
K
KMJ,Derby1:38 PM
Geoffrey Ferres: The frequency of the SDN mux from the Oxford transmitter changed to C50 on 29th May 2013. Try to do a manual tune to C50 if possible. It might be necessary to do a factory reset to delete old entries from the tuner's memory before rescanning for channels. If a communal aerial is in use, and neighbours are having the same problem, an adjustment might be required to let the new frequency through. In such cases contact landlord or building management company for assistance. One further thought, if C50 is used by a VCR or Sky box, the frequency setting for the RF modulator will need to be changed to prevent it blocking the Freeview signal!
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Monday, 1 July 2013
N
Neil11:33 AM
For the past week or so we've had had a lot of trouble with Freeview TV. Mostly noticeable as either no signal at all or blocking and pixelation. Definitely happening on BBC 1&2, CBeebies and Ch5, possibly other channels. It seems to vary according to time, but not sure all channels are the same time fluctuations.
We are in Newbury RG14, but don't point at Hannington as we are not far enough up the hill (though everyone on our street points in different directions including CP).
I did check signal strength at one point and it was varying around 10% and quality up to about 40%. It was much, much better than that before last week. The TV is much worse than the HDR, but then the aerial goes to HDR first.
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