No no no no no!
Not a multiplexer--that layers one signal on top of the other. You need a *multiswitch* because you need to be able to access both the odd and even channels, which requires signalling to go both ways--you need a *SWITCH*. This is why you get only half the channels (I suspect either odd or even, depending upon how the other boxes were set). Look here for a quick tutorial:
http://www.tivocommunity.com/tivo-vb/showthread.php?s=&threadid=55509
Not a multiplexer--that layers one signal on top of the other. You need a *multiswitch* because you need to be able to access both the odd and even channels, which requires signalling to go both ways--you need a *SWITCH*. This is why you get only half the channels (I suspect either odd or even, depending upon how the other boxes were set). Look here for a quick tutorial:
http://www.tivocommunity.com/tivo-vb/showthread.php?s=&threadid=55509