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There are no longer any television transmissions on the Chelmsford (Essex, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.705,0.401 or 51°42'17"N 0°24'4"Esa_postcodeCM1 3WR


The symbol shows the location of the Chelmsford (Essex, England) transmitter. 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 Chelmsford (Essex, England) transmitter.

This transmitter is no longer being used for TV

In the past, television services were provided from this transmitter. However, these have not been withdrawn.

Please see the table below for details of the historic used of this transmitter location.

How will the Chelmsford (Essex, England) transmission frequencies change over time?

1984-971997-981998-20112011-1331 Mar 2018-

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 6 Jul 11 and 20 Jul 11.

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

Analogue 1-5 1000W

Which companies have run the Channel 3 services in the Crystal Palace transmitter area

Sep 1955-Jul 1968Associated-Rediffusion†
Sep 1955-Jul 1968Associated TeleVision◊
Jul 1968-Dec 1992Thames†
Jul 1968-Feb 2004London Weekend Television♦
Jan 1993-Feb 2004Carlton†
Feb 2004-Dec 2014ITV plc♦
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. Chelmsford 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.

Is the transmitter output the same in all directions?

Radiation patterns withheld

Monday, 27 June 2011
James Donnelly
12:45 PM


Just moved to Chelmsford and looking for information about what will happen as part of the Anglia switch over next month.

Will the Chelmsford transmitter be defunct following this? Will the signal from Sudbury be the preferred one? My neighbors have their roof aerials pointed SW, so I assume they're all pointed at Crystal Palace.

I would just like to know if it's worth waiting for the switch over, or whether I will have any luck bunging an aerial in the loft (I know, how long is a piece of string)


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Mike Dimmick

4:48 PM

James Donnelly: The Chelmsford transmitter has only ever provided analogue Channel 5. Your other analogue signals, and any digital signals, will be coming from somewhere else.

I believe Chelmsford UHF TV transmissions will be switched off completely when Sudbury is switched over, despite Chelmsford technically being a relay of Croydon. I'm not sure what purpose the Chelmsford C5 transmitter serves - possibly the fact that Sudbury's C5 transmitter was one-fifth the power of the other four channels meant that another transmitter was needed to serve this area, if the aerial was pointed to Sudbury.

Croydon's transmission power for C5 is the same as the analogue power level for the other four channels from Crystal Palace.

The prediction for your postcode from Sudbury is for reliable results on the PSB muxes (Mux 1/BBC A, Mux 2/D3&4, and Mux B/BBC B/HD) and Mux A/SDN, but variable, poor, or no prediction for Mux C/ArqA and Mux D/ArqB, immediately after switchover. This will continue until after Dover and Bluebell Hill switch over next June, when the Sudbury COM muxes move to final channels and power levels.

From Crystal Palace, all multiplexes are good *now* except for Mux 2 and the early HD service, which are both shown as variable. At switchover in April, everything goes up to good, over 95% probability.

The ultimate predictions are about the same from both transmitters.

If you're currently using Crystal Palace, don't bother retuning in July. Nothing changes for you. CP will get to its final configuration slightly sooner as well. Look out for adverts for the London TV region switchover, rather than Anglia.

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Mike Dimmick

4:49 PM

Briantist: I believe the switch-off date for Chelmsford should be 20 July 2011, not April 2012, based on Ofcom's latest Digital Switchover Timetable at .

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Mike Dimmick's 2,486 posts GB flag
Wednesday, 6 July 2011
ewan fenn
8:07 PM

We looking at Sudbury with high gain w/b on roof.Prior to today we have had poor ITV C4 &C5 especially early morning but ok later in the day. Have retuned this morning and again this evening - no ITV1 C4 or C5. Set stores nothing for these progs.Will this improve after 20th July. Will try a manual tune if I can find the new channel Nos

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Thursday, 7 July 2011
John Vincent
5:26 PM

HELP! I have a digital t.v. already with built in hardrive. I currently get my signal through a rooftop ariel, albeit I live in a bungalow, from Crystal Palace.

Is this my best option?

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John Vincent's 2 posts GB flag
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Friday, 8 July 2011
9:06 PM

CM1 7PG no satellite signal is being received this evening. I have switched the box off at the mains several times and taken the SKY card out etc. Any suggestions?

ManySu thanks.

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Sue's 1 post GB flag
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Friday, 15 July 2011

5:38 PM

Mike Dimmick: Thanks, I have corrected the database.

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Briantist's 38,899 posts GB flag

5:40 PM

ewan fenn: Basically, the answer is yes.

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Briantist's 38,899 posts GB flag

5:43 PM

John Vincent: You will get the best service in the long run from Sudbury, as your reception from Crystal Palace will always be "marginal". However, you will have to wait for 27th June 2012 to receive all the commercial multiplexes from Sudbury, whereas you will get some - but not reliable - reception of these from Crystal Palace now.

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Briantist's 38,899 posts GB flag
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