Downderry (Cornwall, England) digital TV transmitter

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50.363,-4.373 or 50°21'48"N 4°22'24"W

PL11 3JR

Transmitter faults and engineering works

The symbol shows the location of the Downderry transmitter. The Downderry transmitter covers less than 500 homes.

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Caradon Hill region

BBC South West

West Country

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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.

Downderry transmitter Freeview broadcasts

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. The rating shown takes in account the output power level and the various Freeview transmission modes and do not indicate an ongoing fault.

Mux	Effective power level, aerial position	Rating	Mode	Watts
PSB1 BBCA	vertical	Maximum	64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2	60
	1 BBC One South West, 2 BBC Two England, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 301, plus 12 others 200 BBC Red Button, 700 BBC Radio 1, 701 BBC 1Xtra, 702 BBC Radio 2, 703 BBC Radio 3, 704 BBC Radio 4, 705 BBC Radio 5 Live, 706 BBC Radio 5 Live Sports Extra, 707 BBC 6 Music, 708 BBC Radio 4 Extra, 709 BBC Asian Network, 710 BBC World Service, • as a digital multiplex transmitted on frequency C53 (730.0MHz) from 101m datum.
PSB2 D3+4	vertical	Maximum	64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2	60
	3 ITV (West Country), 4 Channel 4 South ads, 5 Channel 5 Part Network ads, 6 ITV 2, 13 Channel 4+1 South ads, 14 More 4, 28 E4, 33 ITV +1 (West Country), • as a digital multiplex transmitted on frequency C60 (786.0MHz) from 101m datum.
PSB3 BBCB	vertical	Maximum	256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4	60
	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, plus 1 others 232 The Space, • as a digital multiplex transmitted on frequency C57 (762.0MHz) from 101m datum.

Looking for these 26 channels?

The Downderry (Cornwall, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: 4Music, 4seven, 5*, 5USA, Al Jazeera English, Challenge, Channel 5 +1, CITV, Community Channel, Dave, Dave ja vu, E4+1, Film 4, Food Network, ITV 2 +1, ITV 3, ITV 4, Movie Mix, PICK TV, Quest, Really, RT English , Sky News, The Zone, VIVA, Yesterday.

If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? page.

Regional news from the Downderry transmitter

How the transmission frequencies change over time

	years		1984-97	1997-98	1998-2009	2009-13	2013-18	2013-18
	aerial group		C/D E	C/D E	C/D E	C/D E	C/D E	C/D E
700	C53					BBCA	BBCA	BBCA
	C55		BBC1	BBC1	BBC1
	C57					BBCB	BBCB	BBCB
	C59		ITV	ITV	ITV
	C60					D3+4	D3+4	D3+4
800	C62		BBC2	BBC2	BBC2
	C65		C4	C4	C4

orange background for multiplexes names more

green background for transmission frequencies

lilac background for power levels in watts

800MHz band: 4G mobile to start in 2013

700MHz band: possible 4G in 2019 more

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 12th August and 9th September 2009.

Comparison of old analogue and current digital signal levels

BBCA, D3+4, BBCB	60W
Analogue 1-4	(-3.6dB) 26W

History of Channel 3 in the Caradon Hill transmitter area

Apr 1961-Dec 1981 Westward Television Jan 1982-Dec 1992 Television South West (TSW) Jan 1993-Feb 2004 Westcountry Television Feb 2004-Dec 2014 ITV plc

• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Downderry 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.