thebigtower


sudbury

 

Enlarged Landscapes


THE SUDBURY TRANSMITTER is the UHF main station that serves the Suffolk and Essex part of the East Anglia television region.  It is sited at Workhouse Green, near the village of Bures, approximately four miles to the south-east of Sudbury town centre.

Two other main UHF transmitters at Sandy Heath (Bedfordshire) and Tacolneston (Norfolk) combine with Sudbury to serve the East Anglia region.

TRANSMISSION STRUCTURES

The Sudbury station is unusual in that it utilises two separate transmission masts.  The main structure is a 141.1 metre (463-ft) high triangular cross-section (three-sided) lattice stayed mast.  The surmounting fibre-glass (GRP) cylindered UHF aerial extends the overall height to 165.8 metres (544-ft).

The secondary structure is also a triangular cross-section mast which stands at a height of 103 metres and was built in 1997 as part of the provision for Digital Terrestrial Television (DTTV) transmission.


 Aerials (1)>  Aerials (2)>  Transmission Site (800x600 or 1024x768 version)>  Supersize Images>  Landscapes>  UHF Map


 

 

 

 

June 2008

 

June 2008

 

June 2008

 

June 2008

 

June 2008

800x600     1024x768

 

800x600    1024x768

 

800x600     1024x768

 

800x600    1024x768

 

800x600   1024x768

 

 

  Supersize Images

 

 


UHF OVERLAP

Reception of Sudbury is also possible across those parts of provincial Essex that are intended to be served by the London region and, more significantly, across the northern coastline of Kent where the principal coverage is provided by the Dover transmitter, which is attached to the south-east region.  The Dover transmitter in turn reciprocates the overlap from Sudbury by providing duplicated coverage across some coastal parts of Essex.

BBC NATIONAL FM RADIO

Sudbury does not carry BBC National or any other BBC FM services as these are generally received across the area from either the nearby Manningtree station in North Essex or Tacolneston.


Enlarged Landscapes


 

 

 

 

June 2008

 

June 2008

 

June 2008

 

June 2008

 

April 2010

800x600    1024x768

 

800x600   1024x768

 

800x600   1024x768

 

800x600   1024x768

 

800x600   1024x768

 

 

  Supersize Images

 

 


DIGITAL SWITCHOVER

The two stages of Digital Switchover at Sudbury were respectively implemented on 6 July 2011 and 20 July 2011.

Major re-engineering work in connection with the switchover commenced at the station in late 2009/early 2010, the most visible development being the installation on the main mast of a twelve-tier cylindrical reserve aerial which also provides the main transmission for the COM multiplexes.  The main UHF aerial has been retained within the existing GRP-cylinder installation.

(See Aerials (2) and also the latest wide shots for images).


 Enlarged Landscapes


 

 

 

800 x 600 version   1024 x 768 version

 

Aerials (1)

 

Aerials (2)

 

UHF Coverage Map

Transmission Site - June 2008 & May 2010

 

June 2008

 

May 2010

 

 


Enlarged Landscapes


STATION HISTORY

The Sudbury station was built during 1967/8 by the BBC to provide UHF coverage to the Suffolk and Essex part of the East Anglia region.  With positioning and ground elevation even more critical than it had been with VHF, the new transmitter site was deemed necessary for UHF despite the existing BBC station at Manningtree, located barely ten miles south-east of the new site and at the time provider of the equivalent BBC 405-line VHF television to much of the same area.

The ITA served the region on 405-line VHF from the Mendlesham transmitter in Suffolk but this had also been considered an inappropriate siting for UHF transmission.

Sudbury commenced regular service on 10 November 1968, with transmissions initially confined (as they were with all other UHF stations operational before 15 November 1969) to BBC2.  Transmitters for BBC1 and ITV were however in service by November 1970.


The images below are from May 2010

 

 

 

 

 

 

April 2010

 

April 2010

 

April 2010

 

April 2010

 

 

800x600   1024x768

 

800x600   1024x768

 

800x600   1024x768

 

800x600   1024x768

 


 Aerials (1)>  Aerials (2)>  Transmission Site (800x600 or 1024x768 version)>  Supersize Images>  Landscapes>  UHF Map


 STATION INFORMATION


Location:

Workhouse Green, nr Bures, Suffolk, CO8

Grid Reference:

TL913377

Landlord:

Arqiva (Legacy: BBC/Crown Castle/NGW)

Ground Height:

70.1m

BBC1 Region:

East

Main Mast Height (+):

141.1m

ITV1 Region:

Anglia East

Second Mast Height (+):

103m

 

 

Aerial Height (*):

221m

 

UHF Tx Number:

11500

(*) Average UHF aerial height above sea level (a.o.d)

(+) Heights not including UHF antennas - main mast height with UHF cylinder is 165.8m


  CURRENT TRANSMISSIONS

Digital Television

 

 

 

 

Analogue Radio (FM)

 

 

 

 

 

 

 

 

 

Service

: Ch/Polarisation/e.r.p

 

 

 Service:

(MHz)

(e.r.p)

PSB1

: 44 / H / 100kW 

  None - BBC National from Manningtree and Tacolneston

PSB2

: 41 / H / 100kW 

 

 

 

 

 

PSB3

: 47 / H / 100kW 

 

 

  Digital Radio

COM4

: 58 / H / 100kW  

 

 

 

 

COM5

: 60 / H / 100kW

  Digital One (Block 11D)

COM6

: 56 / H / 100kW  

Essex (Block 12D)

 

 

 

 

 

 

DSO-TERMINATED TRANSMISSIONS

(Shutdown completed 20 July 2011)

Analogue Television 

 

 

 

Digital Television

 

 

 

 

 

 

 

 

 

Service

  Ch/Polar/e.r.p

 

 

 

 

Service

 Ch/Polar/e.r.p

BBC1

: 51 / H / 250kW

 

 

 

 

Mux1

: 49 / H / 7.0kW

BBC2

: 44 / H / 250kW  

 

 

 

 

Mux2

: 68 / H / 8.1kW

ITV1

: 41 / H / 250kW 

 

 

 

 (+)

Mux2

: 56 / H / 1.1kW

Ch4

: 47 / H / 250kW

 

 

 

MuxA

: 48 / H / 5.0kW

Ch5

: 35 / H / 50kW

 

 

 

 

MuxB

: 39 / H / 7.5kW

 

  

 

MuxC

: 54 / H / 1.5kW

 

 

 

 

 

 

 

MuxD

 : 50 / H / 1.1kW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(+) = Sudbury B


Sudbury Transmitter @ A.T.V (Aerials and Television)

 

Site Home