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My question is why does Shaw Direct need to switch its HD channels to Dvb-S2. Wouldnt switching to mpeg4 digicypher2 be easier on subcribers as it would not only extend the life of 5XX receivers but also guarantee an unhackable system. Mark my word as soon as Dish Network switches to Dvb-S2 the pirates will find a way to compromise the encryption, giving them free Directv, Dish Network, and Shaw Direct. 6 HD channels per transponder seems like more than enough anyways.
 

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Changing to DVB-S2 will not change the encrption the SD uses for security. It only allows them to compress the data further so they can get more channels/transponder. What ever compression scheme they use it will still be encrpted through the existing Digicypher 2 which up to this point has been very secure.
 

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dvb-s2 and encryption system providers use has nothing to do in common
the dvb-s2 modulation will not modify in any way security or enable flaws on it
it's two different worlds
 
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