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Satellite TV receivers & systems support forums
Satellite Systems - What to Buy - What to install
Bandwidth of satellite transponders
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<blockquote data-quote="Bobben_no" data-source="post: 658265" data-attributes="member: 339576"><p>The capacity of a transponder can be calculated here if symbolrate, FEC etc. is known:</p><p>_http://www.satellite-calculations.com/Satellite/bitrates.htm</p><p></p><p>Some of the 33MHz DVB-S2 transponders on 1-west Thor5 T2 is currently transmitting at 66.8Mbits which gives room for 4 H.264 HDTV channels. </p><p>DVB-S2 for direct to home broadcasting should be able to deliver up to 80Mbit/s in 33MHz but it requires more EIRP than most satellites can provide (or a big receiving antenna).</p><p></p><p>A typical transponder for MPEG2 SD channels delivers around 38Mbit/s.</p><p>Symbolrate=27.500 FEC=3/4 gives 38Mbit/s in DVB-S. </p><p>Symbolrate=28.000 FEC=7/8 gives 45Mbit/s in DVB-S.</p></blockquote><p></p>
[QUOTE="Bobben_no, post: 658265, member: 339576"] The capacity of a transponder can be calculated here if symbolrate, FEC etc. is known: _http://www.satellite-calculations.com/Satellite/bitrates.htm Some of the 33MHz DVB-S2 transponders on 1-west Thor5 T2 is currently transmitting at 66.8Mbits which gives room for 4 H.264 HDTV channels. DVB-S2 for direct to home broadcasting should be able to deliver up to 80Mbit/s in 33MHz but it requires more EIRP than most satellites can provide (or a big receiving antenna). A typical transponder for MPEG2 SD channels delivers around 38Mbit/s. Symbolrate=27.500 FEC=3/4 gives 38Mbit/s in DVB-S. Symbolrate=28.000 FEC=7/8 gives 45Mbit/s in DVB-S. [/QUOTE]
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Satellite Systems - What to Buy - What to install
Bandwidth of satellite transponders
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