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<blockquote data-quote="cjgall" data-source="post: 26525" data-attributes="member: 175963">Consider this.On a single tuner PVR its still possible to record one channel and watch a different channel. There are limitations though, both channels must be part of the same bouquet. For instance the Xtreme can do this.My twin tuner receiver has just one connection to my LNB and I loop through to the second tuner. This allows me to record one program and watch another as long as the band and polarity is the same. If I were to connect the second input to a LNB then both tuners would be 100% independant, i.e. no band/polarity limitations. Theoretically I could watch 2 channels while recording two different ones subject to the above metioned limitations.Now consider what I wrote above, in particular the first paragraph,&nbsp; and then combine it with hardware with a double tuner. When recording and watching a second channel then the recorded stream doesn't need to be decoded. It is simply copied to the hard disk. The only situation that it may be decoded is when you watch the stream during copying, depending on the receiver. I have the Topfield 4000PVR which only records one stream while watching a different channel. Its the new Topfield 5000PVR that can record two streams at the same time. Not only can the 5000 PVR do that, you can also record two streams and what a third, previously recorded stream.</blockquote>

[QUOTE="cjgall, post: 26525, member: 175963"] Consider this. On a single tuner PVR its still possible to record one channel and watch a different channel. There are limitations though, both channels must be part of the same bouquet. For instance the Xtreme can do this. My twin tuner receiver has just one connection to my LNB and I loop through to the second tuner. This allows me to record one program and watch another as long as the band and polarity is the same. If I were to connect the second input to a LNB then both tuners would be 100% independant, i.e. no band/polarity limitations. Theoretically I could watch 2 channels while recording two different ones subject to the above metioned limitations. Now consider what I wrote above, in particular the first paragraph, and then combine it with hardware with a double tuner. When recording and watching a second channel then the recorded stream doesn't need to be decoded. It is simply copied to the hard disk. The only situation that it may be decoded is when you watch the stream during copying, depending on the receiver. I have the Topfield 4000PVR which only records one stream while watching a different channel. Its the new Topfield 5000PVR that can record two streams at the same time. Not only can the 5000 PVR do that, you can also record two streams and what a third, previously recorded stream. [/QUOTE]

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