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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

 

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
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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 (SD) Cambridge, 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 15 others

PSB2
D3+4
 H max
C24 (498.0MHz)291mDTG-3180,000W
Channel icons
3 ITV 1 (SD) (Anglia (West 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 (Anglia east),

PSB3
BBCB
 H max
C21+ (474.2MHz)291mDTG-6180,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV 1 HD (ITV Meridian Southampton), 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 -0.2dB
C33 (570.0MHz)291mDTG-8170,000W
Channel icons
12 Quest, 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 -0.2dB
C36 (594.0MHz)289mDTG-8170,000W
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 -0.2dB
C48 (690.0MHz)289mDTG-8170,000W
Channel icons
 FreeSports, 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

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 (66°)
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 (60°)
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?

1965-80s1984-971997-981998-20112011-1312 Feb 2020
VHFA K TK TK TW TW T
C6ITVwaves
C21C4wavesC4wavesC4waves+BBCBBBCB
C24ITVwavesITVwavesITVwavesD3+4D3+4
C27BBC2wavesBBC2wavesBBC2wavesBBCABBCA
C31BBC1wavesBBC1wavesBBC1waves
C32com7
C33SDN
C34com8
C35_local
C36ArqA
C39C5wavesC5waves
C43_local
C48ArqBArqB
C51tv_offSDN
C52tv_offArqA
C55tv_offcom7tv_off
C56tv_offCOM8tv_off

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 30 Mar 11 and 13 Apr 11.

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
Monday, 2 May 2011
S
Steve
sentiment_satisfiedGold

12:54 PM
Wrexham

If the sky box is designed to take the main feed from the aerial then pass it on to the TV it almost certainly will amplify it as well, as if not it might attenuate unacceptably.

Indeed if the box was unpowered that could be the problem.

If you want to experiment, try powercycling the skybox and see if it has any effect. Esp. on analogue channels if you still have any.

And see if you can find out what RF the skybox usses. This page will show "safe" channels if you input your postcode.

link to this comment
Steve's 1,173 posts GB
J
John
1:42 PM

I tried several compilations Steve, the box doesn't provide gain I put the set top aerial in and the signal strength was the same to the TV with the box in or out! same symptoms on the quality level "None" I may just have a rogue box? I will try and borrow one from a friend.

link to this comment
John's 9 posts GB
S
Steve
sentiment_satisfiedGold

2:11 PM
Wrexham

Well if the strength was 100% it could show no higher!

It is conceptually feasible that something in the boxes RF handling circuits spoil the QAM, but I know nothing of this.

But surely you have no need to put RF into or out of the skybox anyway?

link to this comment
Steve's 1,173 posts GB
J
John
5:11 PM

The Aerial ins and out have been the same for a couple of years the only thing that has changed is the TV and you are correct I don't need the through path of the Sky box so the cause was found that's the main thing!

link to this comment
John's 9 posts GB
J
JohnB
5:18 PM
Peterborough

Steve/John
Does a Sky box put an analogue signal out on the rf output. I beleive this is how I get Sky signals to other teles via an distrib.amp.
I was hoping BTVision box would do the same but have had no luck.

link to this comment
JohnB's 5 posts GB
J
John
5:25 PM

Steve I forgot to add the set top aerial was attenuated a lot by placing it on the floor in the wrong direction so I got 70% signal before the box and it was the same through the box apart from no quality showing and yes JohnB it will pass through no problem mine has for a couple of years.

link to this comment
John's 9 posts GB
S
Steve
sentiment_satisfiedGold

6:22 PM
Wrexham

JohnB - I am no expert on Skyboxes, but IIUC the "RF Out" from a skybox would be whatever came into its "RF In" PLUS a simulated RF signal of whatever the Skybox was receiving/replaying. Obviously the Skybox needs to be set to use a "Spare RF" channel - as suggested by top right of this page - which does not conflict with any broadcast channel used locally.

But if your TV has SCART it is better to use that as it avoids adding and then removing the RF carrier.

So as TVs have to be VERY old not to have SCARTs few modern boxes provide RF outputs. You can get it for freeview - and as you suggest it is compatible with much existing in-house cabling.

link to this comment
Steve's 1,173 posts GB
Tuesday, 3 May 2011
S
Sally
10:38 AM
Letchworth Garden City

Lo and behold, my freeview box automatically went into updating last night and guess what, all my BBC channels have returned! Really don't know what was going on, but thankful that it's all working properly again.

link to this comment
Sally's 3 posts EU
D
Debbie
6:19 PM

I don't want to wait until Sept 11 to get Film 4, Yesterday, etc back. My TV has built in Freeview, which is connected to a shared digital aerial in my block of flats. If I buy a Freeview or Freesat set top , will I get any more channels than I do now? Thanks

link to this comment
Debbie's 1 post GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

6:29 PM

Debbie: Talk to the landlord or agent about getting the communal system checked. Make sure the system was properly reconfigured on the switchover days, and that they're aware that some services are on temporary frequencies. Perhaps print out this document:

http://www.digitaluk.co.u….pdf

I can't really offer any more advice without a full postcode, so we can check the predictions - whether there is something preventing the Arqiva B multiplex from working.

It's very unlikely that you would get better reception from a set-top than from a properly set-up communal system. Satellite signals are so weak that the dish must be mounted outside with a clear view of the southern horizon. Again, a threat to have a dish installed could be an incentive for the building management to get the communal aerial sorted out.

It is worth checking whether the building already has a communal satellite dish, in which case you could buy a Freesat box to replace the Freeview box - although the channel line-up is different, and the services you're missing mostly require a Sky subscription.

link to this comment
Mike Dimmick's 2,486 posts GB
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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