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What's On, Transponder and channel support
Transponders & channels
Which are the satellites used for cable and freeview feeds?
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<blockquote data-quote="Adam792" data-source="post: 1081869" data-attributes="member: 330868"><p>They use a format called ETI which is a data format that can carry a full DAB multiplex (the encoded and multiplexed programmes) as a single data stream. The transmitters themselves will just accept ETI data as their input (no matter whether it comes in via satellite or fibre) and then modulate it for transmission.</p><p></p><p>You can broadcast it to your own DAB radios using a modulator device like a HackRF to create the signal on your computer from the ETI stream (just like the transmitters do). I’ve seen somebody in Germany doing this from these feeds with Digital 1 DAB!</p><p></p><p>For the BBC Freeview back-up transmissions on 27.5°W they use BISS encryption, but in a non-standard way as the actual DVB table data (the data that tells a receiver what channels are actually on the transponder and what the PIDs for their video, audio, subtitles, etc are) is also encrypted, to make it more difficult to view for unintended audiences! (Not impossible, although that’s shady ground and not something that can be spoken about in detail here of course!)</p></blockquote><p></p>
[QUOTE="Adam792, post: 1081869, member: 330868"] They use a format called ETI which is a data format that can carry a full DAB multiplex (the encoded and multiplexed programmes) as a single data stream. The transmitters themselves will just accept ETI data as their input (no matter whether it comes in via satellite or fibre) and then modulate it for transmission. You can broadcast it to your own DAB radios using a modulator device like a HackRF to create the signal on your computer from the ETI stream (just like the transmitters do). I’ve seen somebody in Germany doing this from these feeds with Digital 1 DAB! For the BBC Freeview back-up transmissions on 27.5°W they use BISS encryption, but in a non-standard way as the actual DVB table data (the data that tells a receiver what channels are actually on the transponder and what the PIDs for their video, audio, subtitles, etc are) is also encrypted, to make it more difficult to view for unintended audiences! (Not impossible, although that’s shady ground and not something that can be spoken about in detail here of course!) [/QUOTE]
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What's On, Transponder and channel support
Transponders & channels
Which are the satellites used for cable and freeview feeds?
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