| Freeview Multiplexes in the Channel Islands |
| Last updated: December 28, 2011 |
NOTE: Only the Public Services muxes are available in the Channel Islands, PSB1, PSB2 and PSB3. This is often refered to as 'Freeview Light', as the commercial multiplexes are not available due to bandwidth constraints.
Viewers in the Channel Island, can supliment their Freeview channels by using Freesat or a free-to-air satellite receiver. This would allow viewers to see most, though not all of the channels available on the commercial multiplexes. |
| If you have any corrections or information about the Freeview Multiplexes, please contact the Astra 2D website. |
| A Multiplex is a method of digital broadcasting in which the a single transmission can be used to combine and transmit television and radio services. The use of sophisticated digital compression techniques, such as MPEG2 and in the future MPEG4, enables many television and radio services to be accomodated on a single multiplex. Several multiplexes will be used from each television transmitter to bring a multitude of channels to the viewer/listener. A multiplex is broadcast on a single UHF channel, using digital technology. |
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| Freeview Lite |
Freeview Lite refers to those areas only served by the public service multiplexes. These areas are served by relays and not by the main transmitters. Commercial multiplexe opperators have decided that in certain areas (due to their small populations), that it is not ecconomically viable to broadcast their services to certain (mainly rural) areas. Most affected are northern and central Wales, the Scottish Highland and islands, parts of England, the Isle of Man and the Channel Islands.
Viewers with limited or poor Freeview reception, can receive most Freeview channels on satellite, either through Freesat or Freesat from Sky. |
| For detailed information about Freeview Lite, click HERE. |
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| 64 QAM (2/3) |
| In 64 QAM, the digital TV signal is transmitted in groups of 64 symbols. The "forward error correction" is 2/3, and this results in a bitrate of 24Mb/s (megabits per second). This can be used to carry up to eight simultaneous television channels. |
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| 16 QAM (3/4) |
| In 16 QAM mode, the digital TV signal is transmitted in groups of 16 symbols. The "forward error correction" is 3/4, and this results in a bitrate of 18Mb/s. This can be used to carry four or five simultaneous television channels. |
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| Service Information (SI) Explaind |
| EIT (Event Information Table) |
| Th Event Information Table, contains information about present, following and future events. |
| PAT (Programme Association Table) |
| Provides the link between the transport stream id, the programme number and the proramme map id (PMT). |
| PMT (Programme Map Table) |
| When pointed to by the PAT, the PMT provides the associated group of elements (video, audio etc.), with the progamme number. |
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| Digital Terrestrial Links |
| Freeview |
| Top Up TV (Not available in the Channel Islands) |
| UK DTT Regional Channel List |
| DTG - DTT Services by Multiplex |
| DTT Muxes |
| DMOL - DTT Multiplex Operators Limited |
| Freeview Multiplexes (UK Free TV) |
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PSB 1 (MUX 1) |
Channel |
EPG |
Encryption |
Information |
Video |
Audio |
BBC One Channel Islands |
1 |
Clear |
National & Regional variation. |
4900 kBit/s |
256 kBit/s |
BBC Two England |
2 |
Clear |
National |
10548 kBit/s |
256 kBit/s |
BBC Three |
7 |
Clear |
19:00 - 05:00. |
10548 kBit/s |
256 kBit/s |
BBC FOUR |
9 |
Clear |
19:00 - 05;30. |
10548 kBit/s |
256 kBit/s |
CBBC |
70 |
Clear |
07:00 - 19:00. |
10548 kBit/s |
256 kBit/s |
CBeebies |
71 |
Clear |
05:30 - 19:00. |
10548 kBit/s |
256 kBit/s |
BBC News |
80 |
Clear |
24 hours. |
10548 kBit/s |
192 kBit/s |
BBCi Red Button |
301 |
Clear |
24 hours. |
1200 kBit/s |
192 kBit/s |
BBC Radio 1 |
700 |
Clear |
24 hours. |
N/A |
192 kBit/s |
BBC 1Xtra |
701 |
Clear |
24 hours. |
N/A |
160 kBit/s |
BBC Radio 2 |
702 |
Clear |
24 hours. |
N/A |
192 kBit/s |
BBC Radio 3 |
703 |
Clear |
24 hours. |
N/A |
192 kBit/s |
BBC Radio 4 |
704 |
Clear |
24 hours. |
N/A |
192 kBit/s |
BBC Radio 5 Live |
705 |
Clear |
24 hours. |
N/A |
96 kBit/s |
BBC Radio 5 Live Sp. Extra |
706 |
Clear |
Various broadcasting hours. |
N/A |
96 kBit/s |
BBC 6 Music |
707 |
Clear |
24 hours. |
N/A |
160 kBit/s |
BBC Radio 4 Extra |
708 |
Clear |
24 hours. |
N/A |
160 kBit/s |
BBC Asian Network |
709 |
Clear |
24 hours. |
N/A |
128 kBit/s |
BBC World Service |
710 |
Clear |
24 hours. |
N/A |
64 kBit/s |
EIT, PAT, PMT |
N/A |
N/A |
Service Information |
300 kBit/s |
N/A |
| Technical Information |
| Operated by: The BBC |
| Transmission Standard: DVB-T (MPEG-2) |
| Guard: 37000 |
| FEC: 2/3 |
| Modulation: 64 QAM (24,100 kbps) |
| Carrier type: 8k |
| Operational band: UHF |
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PSB 2 (MUX 2) |
Channel |
EPG |
Encryption |
Information |
Video |
Audio |
ITV1 Channel Islands |
3 |
Clear |
24 hours. |
10432 kBit/s |
192 kBit/s |
ITV2 |
6 |
Clear |
24 hours. |
10432 kBit/s |
192 kBit/s |
Channel 4 |
4 |
Clear |
24 hours. |
10432 kBit/s |
192 kBit/s |
Channel 5 |
5 |
Clear |
24 hours. |
10432 kBit/s |
192 kBit/s |
ITV2 |
27 |
Clear |
24 hours. |
10432 kBit/s |
192 kBit/s |
Channel 4+1 |
13 |
Clear |
Timeshift version of Channel 4. |
10432 kBit/s |
192 kBit/s |
More4 |
14 |
Clear |
Entertainment. |
10432 kBit/s |
192 kBit/s |
E4 |
29 |
Clear |
Entertainment. |
10432 kBit/s |
192 kBit/s |
Rabbit |
102 |
Clear |
Text/Interactive. |
1200 kBit/s |
N/A |
Gay Rabbit |
103 |
Clear |
Text/Interactive. |
1200 kBit/s |
N/A |
EIT, PAT, PMT |
N/A |
N/A |
Service Information |
500 kBit/s |
N/A |
Technical Information |
Operated by: ITV/Channel 5 |
Transmission Standard: DVB-T (MPEG-2) |
Guard: 37000 |
FEC: 2/3 |
Modulation: 64 QAM (24,100 kbps) |
Carrier type: Not known |
Operational band: UHF |
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PSB 3 (DVB-T2/MPEG-4) |
Channel |
EPG |
Encryption |
Information |
Video |
Audio |
BBC One HD |
50 |
Clear |
HD simulcast of BBC One. |
3 Mb/s to 17 Mb/s |
128 kBit/s or 320 kBit/s |
BBC HD |
54 |
Clear |
BBC HD channel, to become BBC Two HD. |
3 Mb/s to 17 Mb/s |
128 kBit/s or 320 kBit/s |
Channel 4HD |
52 |
Clear |
HD simulcast of Channel 4. |
3 Mb/s to 17 Mb/s |
128 kBit/s or 320 kBit/s |
EIT, PAT, PMT |
N/A |
N/A |
Service Information |
Not known |
N/A |
Technical Information |
Operated by: The BBC |
Transmission Standard: DVB-T2 (MPEG-4) |
Guard: 1/128 |
FEC: 3/5LDPC + BCH (0.3%) |
Modulation: 256 QAM |
Carrier type: 32k |
Operational band: UHF |
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Note on Video & Audio bitrates |
Video for each channel can range between 3 Mb/s and 17 Mb/s. AAC or Dolby Digital Plus audio is transmitted at 320 kb/s for 5.1 surround sound, with stereo audio at 128 kb/s; audio description takes up 64 kb/s, subtitles 200 kb/s and the data stream, for interactive applications, just 50 kb/s. |
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