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Full Freeview on the Oxford (Oxfordshire, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.790,-1.179 or 51°47'25"N 1°10'46"Wsa_postcodeOX3 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.

This transmitter has no current reported problems

The BBC and Digital UK report there are no faults or engineering work on the Oxford (Oxfordshire, England) transmitter.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
_______

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.

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 H max
C41+ (634.2MHz)295mDTG-3100,000W
Channel icons
1 BBC One (SD) South (Oxford), 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 16 others

PSB2
D3+4
 H max
C44- (657.8MHz)295mDTG-3100,000W
Channel icons
3 ITV 1 (SD) (Meridian/Central (Thames Valley 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, 30 E4 +1, 35 ITV1 +1 (Central west),

PSB3
BBCB
 H max
C47 (682.0MHz)295mDTG-6100,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 1 HD (ITV Central West), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -3dB
C29 (538.0MHz)295mDTG-850,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 H -3dB
C37- (601.8MHz)319mDTG-850,000W
Channel icons
11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 H -3dB
C31 (554.0MHz)319mDTG-850,000W
Channel icons
 FreeSports, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Aljazeera English, plus 19 others

LOX
 H -10dB
C46 (674.0MHz)295mDTG-1210,000W
Channel icons
from 22nd December 2014: 7 Thats Oxford,

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 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?

regional news image
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
regional news image
ITV Meridian News 0.9m homes 3.4%
from Whiteley PO15 7AD, 102km south (183°)
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-80s1984-971997-981998-20112011-132013-182013-1723 May 2018
VHFC/D EC/D EC/D EC/D EC/D E TW TW T
C2BBCtvwaves
C29SDN
C31com7com7
C37com8com8
C41BBCA
C44D3+4
C46_local
C47BBCB
C49tv_offC5wavesC5waves
C50tv_off SDNSDN
C51tv_offLOXLOX
C53tv_offC4wavesC4wavesC4waves+BBCA+BBCA+BBCA
C55tv_offArqBArqBArqBcom7tv_off
C56tv_offCOM8tv_off
C57tv_offBBC1wavesBBC1wavesBBC1wavesBBCBBBCBBBCB
C59tv_off-ArqA-ArqA-ArqA
C60tv_offITVwavesITVwavesITVwaves-D3+4-D3+4-D3+4
C62SDN
C63BBC2wavesBBC2wavesBBC2waves

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

Feb 1956-Jul 1968Associated TeleVision†
Feb 1956-Jul 1968Associated British Corporation◊
Jul 1968-Dec 1981Associated TeleVision
Jan 1982-Dec 2006Central Independent Television
Dec 2006-Feb 2009ITV Thames Valley
Feb 2009-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. Oxford 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
Wednesday, 22 January 2014
P
pikpilot
sentiment_satisfiedBronze

10:11 AM

Rob, you said "Not sure what's going on there, is something strange happening in the cable under the floor? "

Did you do the simple cable continuity check I suggested earlier? You could do this now on just the cable under the floor using a torch bulb and battery.

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pikpilot's 23 posts GB
R
Rob
sentiment_satisfiedBronze

12:48 PM
Kidlington

Hi Pikpilot,
Sorry if i am honest i did not really understand how to do this, i have a coax plug into the wall socket, a run of cable under the floor, a two way splitter which feeds one lead to the TV and one lead to a spare socket at the other end of the room. Could you explain this test is laymans terms for me, i have no experiance of this kind of thing.
Also if anyone has any advice on why i should be getting a high signal strengh and low quality (highest is %31) on the alba set top box i have borrowed would be great, I have already tried a varible attenuator which i turn the signal down to good on the sony with but the interference was still there and i lost quest etc which i watch.
Again it is only the channel 60 programmes which are effected everything else in perfect.

Cheers again,

Rob

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Rob's 63 posts EU
R
rob
sentiment_satisfiedBronze

4:27 PM
Kidlington

Well another update,
just looking along the street i have noticed lots on new tv ariels and lots with what look like masthead amps on.
also i asked at work and someone there had exactly the same problem, Ariel split a few times and tvs upstairs fine but the channel 60 channels blocky at times just like mine. He ordered a powered 4g splitter and plugged this in the loft and it has cured his issue.Now thinking that all the masts around here this could be the problem. Anyway ordered one off ebay and will be here Friday so fingers crossed.

regards
Rob.

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R
Rob
sentiment_satisfiedBronze

9:15 PM
Kidlington

Well All,
Still puzzled over this one, signal strength on my Sony KDL37w5500 said the signal strength was high it does not show the quality, now i have this Alba set top box plugged in the signal strength says %100 but the signal quality says it is 9% and even lower but that cannot be right as the picture is not glitching and there is no sound issues.
So i cannot seem to find how the quality gets so bad and how i get the quality up, ariel aligned with a signal meter and had all the lights on, however what makes the quality low?

Sending me mad this one really, will update when i get the booster fitted but what is reducing the quality ?

Regards
Rob

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MikeP
sentiment_very_satisfiedPlatinum

9:30 PM

rob:
Let us know what happens when you fit the 'booster'.

I would be very surprised if you need that amplification as you are only 7.4 km from the Oxford transmitter. Usually having too strong a signal causes the sort of problems you are reporting. Generally it seems that 70-80% strength gives better quality with fewer, if any interruptions/disturbances.

I note that there are mobile signal masts between Oxford Road and Bicester Road, not far from your location. It doesn't appear that any are 4G, but it may be worth contacting at800 (see https://at800.tv/) and asking if they are aware of any problems being caused in your area.

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MikeP's 3,056 posts GB
R
rob
sentiment_satisfiedBronze

10:11 PM
Kidlington

Cheers mike p,
Contacted them and they say there is not an issue. I am not sure if that's true however.

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rob's 25 posts GB
Thursday, 23 January 2014
P
pikpilot
sentiment_satisfiedBronze

11:38 AM

Hi Rob, you said "Hi Pikpilot,
Sorry if i am honest i did not really understand how to do this, i have a coax plug into the wall socket, a run of cable under the floor, a two way splitter which feeds one lead to the TV and one lead to a spare socket at the other end of the room. Could you explain this test is laymans terms for me, i have no experiance of this kind of thing. "

What I said in earlier posts is that you should check the continuity of each of your cables. Easiest way is, at one end of the cable (without the splitters in) join together the inner and outer (pin and case) of the cable. At the other end either use a multimeter, or if use don't have one, use a torch battery and bulb in series across the pin and outer of the cable. The bulb will light if no fault.

I have come across a number of installations where people had not soldered the inner wire of the cable into the pin of the plug. What happens is that the wire does not actually touch the inside of the pin and the signal is only capacitively coupled. Sounds unbelievable but it happens when the wire is too short to reach the end of the pin and is held central by the insulation. If you don't want to solder it then there is another fix that works. Just put a kink in the inner wire before you push it into the pin of the plug. With all those splitters in place you are already loosing a lot of signal so a single connector problem will be the last straw. And it is not just about signal loss as a break in the cable will make the cable look like an un-terminated long wire aerial bringing in interference.

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pikpilot's 23 posts GB
R
Rob
sentiment_satisfiedBronze

1:13 PM
Kidlington

Hi Pikpilot,
So let me get this right take the fittings off both ends, put the copper center and brade together at one end and then put a multi meter over the center copper and brade at the other end. What should the multi be set to and what reading should i get?
Is this correct?

Thanks again for all the help
Rob

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Rob's 63 posts EU
P
pikpilot
sentiment_satisfiedBronze

3:11 PM

Rob, don't take the connectors off as we are looking for a poor connection in the connector.
If you have taken the connectors off the when you put them back do this;
1) put a small kink in the central wire to ensure it is making contact inside the pin
2) after putting it back together, connect your multimeter on the ohms range between the inner and outer of the connector. It should read Infinity.
3) do the test in my previous post but using the multimeter instead of a battery and torch bulb. Reading should be around zero ohms

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pikpilot's 23 posts GB
R
rob
sentiment_satisfiedBronze

9:06 PM
Kidlington

Hi all again,
now i am still hoping to cure this and get back to using my Sony tv as the alba has a good picture but the remote and slow reaction time is driving me nuts. Now if all else fails i may need to call on a professional, does anyone have any impartial advice for a good Ariel tech in the Oxfordshire region that's not going to cost me the earth.
By the way alba says 100% signal 9 % quality on most channels tonight, what's in my system that's causing the low quality? If it is, not sure i believe these signal meters now they all seem different on each set or box.

again thanks all for your help and patience with me.

regards
Rob.

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