Correct. The channel "stream" is only on the satellite once. It is then assigned to channel numbers. So if one version of a channel is MPEG4, they all are on that satellite.
What I have been calling "mirror" is when a video stream is assigned more than one channel number. IOW the system tables show the same video stream on two different channels.
What I have been calling "mapped" is when a channel number on the system tables has a "tag" that the receiver can read to place that video stream on a different channel number. But the system tables from the source show no such channel.
Most of the HD channels on Dish are "Mirrored" in the 9400 (regular), 5300 (Dish Latino), 4100 (Mystery) channel blocks. The 9400 range channels are mapped to the three digit channel numbers.
There were times when the same channel can be on two different transponders on the same satellite, but that only happened during transitions and Dish figured out a way to "tag" an MPEG2 channel so that only MPEG4 receivers can see it so the transitional 6200 block channels are identical to the now blocked 9400 channels to MPEG2 receivers.
See ya
Tony
What I have been calling "mirror" is when a video stream is assigned more than one channel number. IOW the system tables show the same video stream on two different channels.
What I have been calling "mapped" is when a channel number on the system tables has a "tag" that the receiver can read to place that video stream on a different channel number. But the system tables from the source show no such channel.
Most of the HD channels on Dish are "Mirrored" in the 9400 (regular), 5300 (Dish Latino), 4100 (Mystery) channel blocks. The 9400 range channels are mapped to the three digit channel numbers.
There were times when the same channel can be on two different transponders on the same satellite, but that only happened during transitions and Dish figured out a way to "tag" an MPEG2 channel so that only MPEG4 receivers can see it so the transitional 6200 block channels are identical to the now blocked 9400 channels to MPEG2 receivers.
See ya
Tony