
The North Hessary Tor transmitting station is a broadcasting facility located in Dartmoor National Park, Devon, England. It's a significant site for radio and television transmission.
This station provides services for several TV channels, including BBC One, BBC Two, ITV, Channel 4, and Channel 5. The specific channels and their frequencies are detailed in the station's technical specifications.
The transmitter's location allows it to cover a wide area, including parts of Devon, Somerset, and Cornwall. Its elevation and design enable it to broadcast signals with a strong signal strength and good reception quality.
Technical Details
North Hessary Tor transmitting station uses a range of frequencies to transmit digital television and radio signals. This includes services such as Freeview digital TV.
The station has undergone several upgrades to keep up with changes in broadcasting technology. These upgrades have allowed it to support colour broadcasts and digital radio services.
Here's a breakdown of the key upgrades:
- From 405-Line to 625-Line: The station shifted from the older 405-line VHF system to the modern 625-line UHF system to support colour broadcasts.
- Digital Switchover: The station was upgraded to transmit Freeview digital TV services as part of the digital switchover in 2009.
- DAB Radio: The station began broadcasting DAB signals in addition to its FM services.
Technical Specifications
North Hessary Tor is a broadcasting site that uses a range of frequencies to transmit both digital television and radio signals. The site's technical specifications are quite impressive.
The broadcast frequencies used by North Hessary Tor are varied and allow for the transmission of multiple services. This is made possible by the site's use of a range of frequencies.
Here's a breakdown of the services that can be received using the broadcast frequencies at North Hessary Tor:
- Digital television signals
- Radio signals
Upgrades and Modernisation
North Hessary Tor has undergone significant upgrades to stay current with broadcasting technology. The station first shifted from the older 405-line VHF system to the modern 625-line UHF system to support colour broadcasts.
This change allowed for the transmission of colour television signals. I've noticed that older TVs often struggle to display vibrant colours, which is why this upgrade was a game-changer.
In 2009, the UK underwent the digital switchover, during which analogue television signals were switched off. North Hessary Tor was upgraded to transmit Freeview digital TV services as part of this process.
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The station now broadcasts DAB signals in addition to its FM services. This means you can tune in to your favourite radio stations in digital quality, which is a nice perk for music lovers.
Here are the key upgrades North Hessary Tor has undergone:
- From 405-Line to 625-Line: Colour television support
- Digital Switchover: Upgraded to transmit Freeview digital TV services
- DAB Radio: Added digital radio broadcasts
Challenges and Maintenance
North Hessary Tor Transmitting Station is located in a challenging environment, where weather conditions play a significant role in its maintenance.
Heavy rainfall, high winds, and fog, particularly in winter, are common on Dartmoor, making the station vulnerable to these conditions.
The remoteness of the tor makes it difficult to access the mast for routine maintenance or repairs, especially in poor weather.
The height and location of the mast compound these challenges, requiring careful planning and execution for any maintenance tasks.
The station's location is not easily accessible, and maintenance teams must be prepared for unpredictable weather conditions.
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Broadcasting Services
North Hessary Tor transmitting station offers a range of broadcasting services, including television and radio. The station is part of the UK's national broadcast infrastructure.
The station broadcasts a variety of TV channels, including BBC One, BBC Two, ITV, and Channel 4, as well as their respective HD channels. Here are some of the TV channels broadcast by North Hessary Tor:
The station also broadcasts a range of radio services, including BBC Radio 1, BBC Radio 2, BBC Radio 3, and BBC Radio 4, as well as Classic FM and BBC Radio Devon.
Analogue FM Radio
Analogue FM radio is a popular way to listen to the radio.
The frequency range for analogue FM radio is typically between 88 and 108 MHz.
Some common frequencies for analogue FM radio include 88.1 MHz, 90.3 MHz, 92.5 MHz, 97.7 MHz, and 100.0 MHz.
These frequencies are used by various radio stations, such as BBC Radio 2, BBC Radio 3, BBC Radio 4, BBC Radio 1, and Classic FM.
BBC Radio 2 broadcasts at 88.1 MHz with an ERP of 160 kW.
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BBC Radio 3 broadcasts at 90.3 MHz with an ERP of 160 kW.
BBC Radio 4 broadcasts at 92.5 MHz with an ERP of 160 kW.
BBC Radio 1 broadcasts at 97.7 MHz with an ERP of 160 kW.
Classic FM broadcasts at 100.0 MHz with an ERP of 160 kW.
BBC Radio Devon broadcasts at 103.4 MHz with a significantly lower ERP of 15 kW.
Freeview Channels Broadcast by Transmitter
The North Hessary Tor transmitter broadcasts a range of Freeview channels. The transmitter is located at a height of 578m.
Some of the channels broadcast by the North Hessary Tor transmitter include BBC One (SD) South West, BBC Two England, BBC Four, BBC Three, CBBC, and CBeebies on PSB1 (BBCA). ITV 1 (SD) (West Country), Channel 4 (SD) South ads, and Channel 5 are also broadcast on PSB2 (D3+4).
The North Hessary Tor transmitter also broadcasts high-definition channels, including BBC One HD South West and BBC Two HD England on PSB3 (BBCB).
Location and Significance
North Hessary Tor transmitting station is located in a stunning spot, with Princetown sitting below a high dome of moorland.
At 517m above sea level, this dome is topped with a giant radio mast and a trig point on a rocky outcrop. The views from the trig point are huge.
To visit the transmitting station, start from the car park by Princetown National Park Visitor Centre. Wander up the high street in the direction of Dartmoor Prison, then turn left into Station Road.
The road bends right, and a path runs by the wall and fence dividing open access moorland from private land. This takes you to the bottom of the mast and tor with its trig point.
The mast was built in the middle of the 1950s and stands at an impressive 650ft high. It's visible from miles around and has been used as a television transmitter and radio broadcasting station.
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Here are some key facts about the location and significance of North Hessary Tor transmitting station:
- First major television transmitter in the Southwest of England.
- Played a crucial role in expanding the BBC’s broadcasting footprint in rural areas like Dartmoor.
- Part of the UK’s national broadcast infrastructure, ensuring access to television and radio services in remote and rural areas.
Conclusion
The North Hessary Tor Transmitting Station is a vital part of the UK's broadcasting network, serving the southwest of England with television and radio services.
Its towering mast is a significant landmark on Dartmoor, a prominent feature of the landscape.
Since its construction in 1955, the station has adapted to significant changes in broadcasting technology, ensuring that even the most remote parts of Devon and Cornwall can stay connected to national and local broadcasts.
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