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Full Freeview on the Sandy Heath (Central Bedfordshire, England) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps52.130,-0.242 or 52°7'47"N 0°14'33"Wsa_postcodeSG19 2NH

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The symbol shows the location of the Sandy Heath (Central Bedfordshire, England) transmitter which serves 920,000 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 Sandy Heath (Central Bedfordshire, England) transmitter.

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

Which Freeview channels does the Sandy Heath 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
C27 (522.0MHz)291mDTG-3180,000W
Channel icons
1 BBC One Cambridge, 2 BBC Two England, 9 BBC Four, 120 CBBC, 121 CBeebies, 130 BBC News, 131 BBC Parliament, 601 BBC Red Button 1, plus 17 others

PSB2
D3+4
 H max
C24 (498.0MHz)291mDTG-3180,000W
Channel icons
3 ITV (Anglia (West micro region)), 4 Channel 4 South ads, 5 Channel 5, 6 ITV 2, 13 Channel 4 +1 South ads, 14 More4, 15 Film4, 24 ITV4, 28 E4, 33 ITV +1 (Anglia east),

PSB3
BBCB
 H max
C21+ (474.2MHz)291mDTG-6180,000W
Channel icons
45 Film4 +1, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 123 CBBC HD,

COM4
SDN
 H -0.2dB
C51 (714.0MHz)291mDTG-8170,000W
Channel icons
10 ITV3, 20 Drama, 21 5 USA, 26 ITV Be, 27 ITV 2 +1, 30 5STAR, 34 ITV3 +1, 37 Quest, 44 Channel 5 +1, 54 My5, 58 ITV Be +1, 61 True Entertainment, 62 ITV4 +1, 66 CBS Reality, 70 Horror Channel, 83 Blaze, 84 Blaze +1, 122 CITV, plus 25 others

COM5
ArqA
 H -0.2dB
C52 (722.0MHz)289mDTG-8170,000W
Channel icons
11 pick, 12 Dave, 17 Really, 29 E4 +1, 32 Movie Mix, 41 Food Network, 46 Challenge, 48 Movies4Men, 68 truTV, 69 Tru TV +1, 72 YourTV, 126 Tiny Pop, 132 Sky News, plus 12 others

COM6
ArqB
 H -0.2dB
C48 (690.0MHz)289mDTG-8170,000W
Channel icons
 Al Jazeera English,  BT Sport 1 (not free), 18 4Music, 19 Yesterday, 25 Home, 31 Spike, 38 Quest +1, 42 Travel Channel, 47 4seven, 59 BT Showcase (not free), 64 CBS Action, 73 YourTV +1, 79 Dave ja vu, plus 23 others

com7
 H -5.6dB
C32 (562.0MHz)291mDTG-649,600W
Channel icons
 Buz Muzik, 56 5USA +1, 57 VIVA, 67 CBS Reality +1, 71 CBS Drama, 81 Talking Pictures TV, 82 Vintage TV, 86 VIVA +1, 87 Keep It Country, 106 BBC Four HD, 107 BBC News HD, 108 Al Jazeera Eng HD, 109 Channel 4+1 HD, 110 4seven HD, 113 RT HD, 124 CBeebies HD, plus 4 others

com8
 H -5.6dB
C34 (578.0MHz)291mDTG-649,100W
Channel icons
55 5STAR+1, 63 Community, 91 Frontrunner, plus 3 others



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
H/V: aerial position (horizontal or vertical)

Which BBC and ITV regional news can I watch from the Sandy Heath transmitter?

regional news image
BBC Look East (West) 1.0m homes 3.7%
from Cambridge CB4 0WZ, 29km east-northeast
to BBC Cambridge region - 4 masts.
70% of BBC East (East) and BBC East (West) is shared output
regional news image
ITV Anglia News 1.0m homes 3.7%
from Norwich NR1 3JG, 119km east-northeast
to ITV Anglia (West) region - 5 masts.
All of lunch, weekend and 80% evening news is shared with Anglia (East)

How will the Sandy Heath (Central Bedfordshire, England) transmission frequencies change over time?

years1965~851984-971997-981998-20112011-132013-182013-18
aerial groupVHFA KKWWWW
C6ITV
C21C4C4C4+BBCB+BBCB+BBCB
C24ITVITVITVD3+4D3+4D3+4
C27BBC2BBC2BBC2BBCABBCABBCA
600C31BBC1BBC1BBC1
C32com7
C34com8
C39C5C5
C40+C
C42-1
C43+A_local_local_local
C45-2
C46+D
C48ArqBArqBArqB
700C51SDNSDNSDN
C52ArqAArqAArqA
800C67B

orange background for multiplexes names more
green background for transmission frequencies
lilac background for power levels in watts
800MHz band: 4G mobile started in 2013
700MHz band: 4G from 30 June 2020more
600MHz band: new or moved digital TV services more
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 30th March and 13th April 2011.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-4 1000kW
BBCA, D3+4, BBCB(-7.4dB) 180kW
SDN, ARQA, ARQB(-7.7dB) 170kW
com7(-13dB) 49.6kW
com8(-13.1dB) 49.1kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-17dB) 20kW
Analogue 5(-20dB) 10kW

Which companies have run the Channel 3 services in the Sandy Heath transmitter area

Oct 1959-Feb 2004Anglia Television
Feb 2004-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.

Comments
Saturday, 31 December 2016
J
jb38
12:07 AM

Michael Taylor: The reception problems reported by viewers located in a number of Southern regions over the last few days is not being caused by technical faults connected with the transmission side of the equation, but the fact that many areas of the UK have been...and still are...experiencing the effects on reception of a series of high atmospheric pressure zones sweeping across the Mid to Southern areas of the country.

The effects referred to being to allow reception of transmissions from distant stations, which if one of happens to operate on the same frequency as one used by a local station will corrupt the quality of the signal, this being why some multiplexes can be affected and not others. This also happened on the previously used analogue system, but though it generally resulted in either ghosting or background images sweeping across the picture being viewed rather than wipe out the picture.

The unfortunate aspect of this situation being that said high pressure is not presently indicated on Hepburn's tropo forecast maps as clearing the UK until late Sunday evening around 6.00PM or so.

Anyone with Freeview equipment which has separate strength and quality indications can check if they are being affected by this sort of thing, done by simply carrying out a signal check on either a dead / or severely
pixelated channel, as the signal strength will usually indicate as being reasonably normal but accompanied by either erratic low / or zero quality.



link to this
jb38's 7,179 posts Platinum Platinum GB
C
Coach
8:35 AM

jb38: interesting comment about high pressure.
Have had reception issues for several days
but Hepburn map does not show any potential
atmosphere issues. Am I reading it correctly?

link to this
Coach's 24 posts Bronze Bronze GB
J
jb38
11:43 PM

Coach: I don't feel that you can be!, as a re-check made earlier on this evening clearly indicated (on an 18.00 forecast) that Southern regions of the UK from a line drawn between Hull and Cardiff were still moderately affected by a high pressure. That said, the forecast has actually changed for the better since my posting yesterday insomuch that the UK is predicted as being clear from approximately 12.00 midnight today (31st)

As far as accessing the site is concerned, I don't know the method you used? but the best way is via the links on this site.

Scroll to the very top of this page (above Sandy's TX map) and click on Faults, then again on the following page followed by selecting and clicking on "Atmosphere interference maps", this opening on William Hepburns Tropospheric ducting Forecast. Finally, for a better view of the UK select "Northwestern Europe" in the region select drop down menu.

Although I fully appreciate that you may well be already fully aware of this, but I would like to point out that the headings used to describe the coloured area's of the map, e.g: No4 "Good" and other favourable references have to be looked at in reverse, as these maps are really intended for the purpose of providing / informing amateur Radio Hams as to the possibilities of them making long distant contacts via short wave (HF) transceivers using the very mode that's responsible for TV reception problems, i.e: the ducting effects relating to high pressure zones.

link to this
jb38's 7,179 posts Platinum Platinum GB
Monday, 9 January 2017
H
Helen290
11:17 AM Milton Keynes

I have lost ITV3 and Drama channels in the last 2 weeks, which are the ones I watched the most.
I have reset the Freeview a few times but am still unable to pick these up any more. Any suggestions would be most welcome - my postcode is MK17 0JQ, thank-you.

link to this
Helen290's 1 post GB
Helen290's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
MikeP
4:16 PM

Helen290:

There is a hill just under 10km from you in the direction of the Sandy Heath transmitter. If that has trees it is likely to cause reception problems when the leaves/trees are wet.

Rather than retuning, which risks losing even more channels, check all your aerial connections carefull.



link to this
MikeP's 1,231 posts Gold Gold GB
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Your comment please
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