Stockland Hill transmitting station
| |
Mast height | 235 metres (771 ft) |
---|---|
Coordinates | 50°48′26″N 3°06′18″W / 50.8072°N 3.105°WCoordinates: 50°48′26″N 3°06′18″W / 50.8072°N 3.105°W |
Grid reference | ST222014 |
Built | 29 April 1961 |
BBC region | BBC South West |
ITV region | ITV Westcountry |
The Stockland Hill transmitting station is a transmitting facility of FM Radio and UHF television located near Honiton, Devon, England. This transmitter mainly serves the East of Devon and West Dorset.
It was constructed in 1961 by the IBA to transmit ITV 405-line television with transmissions commencing on Band III channel 9 from antennas at 450 m (1,475 ft) above sea level.
Colour television came to the site in 1971.[1] Channel Four started up in November 1982. Stockland Hill never radiated the analogue Channel Five service.
Digital television was first introduced at this site in 1998, and Digital Switchover happened in May 2009. Stockland Hill was the second transmitter in the south west of England to have its analogue television transmissions shut off. BBC Two was switched off on 6 May 2009 and the rest of the analogue services were switched off on 20 May 2009 around after midnight.
Stockland Hill currently transmits all of the DTT multiplexes at full planned ERP. The three PSB multiplexes are at 50 kW, the other three multiplexes are at 25 kW.[2]
Services
Analogue television
29 April 1961 - 13 September 1971
405-line VHF ITV television arrived in the southwest with the simultaneous building of this station and Caradon Hill 100 km to the west in Cornwall.
Frequency | VHF | kW | Service |
---|---|---|---|
194.75 MHz | 9V | 100 | Westward Television |
13 September 1971 - 1 November 1982
UHF colour television commenced.
Frequency | VHF | UHF | kW | Service |
---|---|---|---|---|
194.75 MHz | 9V | — | 100 | Westward Television/TSW |
487.25 MHz | — | 23 | 250 | Westward Television/TSW |
511.25 MHz | — | 26 | 250 | BBC Two |
567.25 MHz | — | 33 | 250 | BBC One |
1 November 1982 - 3 January 1985
The UK's fourth UHF television channel started up.
Frequency | VHF | UHF | kW | Service |
---|---|---|---|---|
194.75 MHz | 9V | — | 100 | TSW |
487.25 MHz | — | 23 | 250 | TSW |
511.25 MHz | — | 26 | 250 | BBC Two |
535.25 MHz | — | 29 | 250 | Channel 4 |
567.25 MHz | — | 33 | 250 | BBC One |
3 January 1985 - 15 November 1998
The VHF 405-line system was discontinued across the UK, and from that point for the next 23 years, television from Stockland Hill was the originally-intended four channels on UHF only.
Frequency | UHF | kW | Service |
---|---|---|---|
487.25 MHz | 23 | 250 | Westcountry Television (TSW until 1992) |
511.25 MHz | 26 | 250 | BBC Two |
535.25 MHz | 29 | 250 | Channel 4 |
567.25 MHz | 33 | 250 | BBC One |
Analogue and Digital television
15 November 1998 - 6 May 2009
The initial roll-out of digital television involved running the digital services interleaved (and at low ERP) with the existing analogue services.
Frequency | UHF | kW | Service | System |
---|---|---|---|---|
481.833 MHz | 22- | 5 | BBC (Mux 1) | DVB-T |
487.25 MHz | 23 | 250 | ITV1 | PAL |
505.833 MHz | 25- | 5 | SDN (Mux A) | DVB-T |
511.25 MHz | 26 | 250 | BBC Two | PAL |
529.833 MHz | 28- | 5 | Digital 3&4 (Mux 2) | DVB-T |
535.25 MHz | 29 | 250 | Channel 4 | PAL |
546.166 MHz | 30+ | 2.5 | Arqiva (Mux C) | DVB-T |
561.833 MHz | 32- | 5 | BBC (Mux B) | DVB-T |
567.25 MHz | 33 | 250 | BBC One | PAL |
578.166 MHz | 34+ | 2.5 | Arqiva (Mux D) | DVB-T |
6 May 2009 - 20 May 2009
Digital Switchover commenced at Stockland Hill, with analogue BBC Two being switched off on channel 26 and BBC Mux 1 being switched off on channel 22-. Channel 26 was reused by the new BBC A multiplex at full post-DSO power (50 kW) and using 64-QAM with 8k carriers.
Frequency | UHF | kW | Service | System |
---|---|---|---|---|
487.25 MHz | 23 | 250 | ITV1 | PAL |
505.833 MHz | 25- | 5 | SDN (Mux A) | DVB-T |
514.166 MHz | 26+ | 50 | BBC A | DVB-T |
529.833 MHz | 28- | 5 | Digital 3&4 (Mux 2) | DVB-T |
535.25 MHz | 29 | 250 | Channel 4 | PAL |
546.166 MHz | 30+ | 2.5 | Arqiva (Mux C) | DVB-T |
561.833 MHz | 32- | 5 | BBC (Mux B) | DVB-T |
567.25 MHz | 33 | 250 | BBC One | PAL |
578.166 MHz | 34+ | 2.5 | Arqiva (Mux D) | DVB-T |
Digital television
20 May 2009 - 18 April 2012
Digital switchover was completed at Stockland Hill. All analogue television was switched off and the new post-DSO multiplexes took over the analogue frequencies plus a few new ones. Full power could not immediately be achieved for the COM multiplexes due to interference issues at Rowridge and in France.[3][4]
Frequency | UHF | kW | Operator | System |
---|---|---|---|---|
481.833 MHz | 22- | 10 | Arqiva A | DVB-T |
490.166 MHz | 23+ | 50 | Digital 3&4 | DVB-T |
505.833 MHz | 25- | 10 | SDN | DVB-T |
514.166 MHz | 26+ | 50 | BBC A | DVB-T |
529.833 MHz | 28- | 10 | Arqiva B | DVB-T |
538.166 MHz | 29+ | 50 | BBC B | DVB-T2 |
18 April 2012 - present
The current UHF channels that Stockland Hill is transmitting are:
Frequency | UHF | kW[5] | Operator | System |
---|---|---|---|---|
481.833 MHz | 22- | 25 | Arqiva A | DVB-T |
490.166 MHz | 23+ | 50 | Digital 3&4 | DVB-T |
505.833 MHz | 25- | 25 | SDN | DVB-T |
514.166 MHz | 26+ | 50 | BBC A | DVB-T |
529.833 MHz | 28- | 25 | Arqiva B | DVB-T |
538.166 MHz | 29+ | 50 | BBC B | DVB-T2 |
Analogue radio (FM)
Frequency | kW | Service |
---|---|---|
103.0 MHz | 1 | Heart South West |
Digital radio (DAB)
Frequency | Block | kW[6] | Operator |
---|---|---|---|
221.352 MHz | 11C | 0.5 | NOW Exeter and Torbay |
222.064 MHz | 11D | 2 | Digital One |
225.648 MHz | 12B | 5 | BBC National DAB |
References
- ↑ http://txlib.mb21.co.uk/main.php?g2_itemId=2209&g2_imageViewsIndex=3
- ↑ "UK free TV".
- ↑ http://www.digitaluk.co.uk/transmitternetwork/transmitter_groups/stockland_hill
- ↑ http://www.digitaluk.co.uk/transmitternetwork/tools__and__resources/almanac/installer_newsletters_2009_pdfs2/West_Country1_Installers_Newsletter_SHill_Final_24_Mar09.pdf
- ↑ Television Viewers Guide 2009
- ↑ Radio Listeners Guide 2010
External links
- MB21's page on 405 TV to the Southwest
- 405 Alive's list of transmitters"
- More details on 405-line ITV transmitters
- The Transmission Gallery: Photographs and Information
- Stockland Hill Transmitter at thebigtower.com