Sudbury transmitting station

Sudbury
	Sudbury transmitting station (Suffolk)
Mast height	165.8 metres (544 ft) (Mast 1); 103 metres (338 ft) (Mast 2)
Coordinates	52°00′15″N 0°47′09″E / 52.004167°N 0.785833°ECoordinates: 52°00′15″N 0°47′09″E / 52.004167°N 0.785833°E
Grid reference	TL913377
Built	1967-1968
BBC region	BBC East
ITV region	ITV Anglia

The Sudbury transmitting station is a facility for telecommunications and broadcasting transmission at Sudbury, England. It consists of two guyed masts, one, the original, being 165.8 metres (544 ft) high, and a second mast (no longer in service) at 103 metres (338 ft). They have antennas attached at various heights. It is situated 14 miles WSW of Ipswich at a site height of 70m. All 6 Digital TV MUXES are transmitted from Sudbury using an omnidirectional pattern at an ERP of 100 kW. Originally Sudbury was a B group transmitter but in order to accommodate the digital transmissions it went E group then, at its 700MHz clearance in August 2018, it ended up a K group (or wideband). However, most B group, E group and wideband aerials will continue to work fine on it (see graph).

Services available from this site[]

Digital radio[]

Frequency	Block	kW^[1]	Operator
222.064 MHz	11D	1	Digital One
225.648 MHz	12B	2.4	BBC National DAB
229.072 MHz	12D	1	NOW Essex

Digital television[]

Frequency	UHF	kW	Operator	System
538.000 MHz	29	100	SDN	DVB-T
554.000 MHz	31	100	Arqiva A	DVB-T
602.000 MHz	37	100	Arqiva B	DVB-T
634.000 MHz	41	100	Digital 3&4	DVB-T
658.000 MHz	44	100	BBC A	DVB-T
682.000 MHz	47	100	BBC B	DVB-T2

Aerial group K is required to receive all channels.

Before switchover[]

Frequency	UHF	kW	Operator
618.000 MHz	39	7.5	BBC (Mux B)
690.166 MHz	48+	5	SDN (Mux A)
698.166 MHz	49+	7	BBC (Mux 1)
706.166 MHz	50+	1.1	Arqiva (Mux D)
738.000 MHz	54	1.5	Arqiva (Mux C)
754.000 MHz	56	1.1	Digital 3&4 (Mux 2)†
850.000 MHz	68	8.1	Digital 3&4 (Mux 2)

† Low power transmission from Sudbury B.

Analogue television[]

Frequency	UHF	kW^[2]	Service
583.25 MHz	35	50	Channel 5
631.25 MHz	41	250	ITV1
655.25 MHz	44	250	BBC Two
679.25 MHz	47	250	Channel 4
711.25 MHz	51	250	BBC One

Aerial group: B
Polarisation: horizontal

References[]

^ Radio Listeners Guide 2010
^ Television Viewers Guide 2009

External links[]

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[1] Radio Listeners Guide 2010

[2] Television Viewers Guide 2009

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