problem with this configuration: TV and iphone or TV and computer are tuned to the same channel. i'd like to watch one channel on TV and another channel on iphone or computer. i was under the impression that the sling had a internal tuner.
It does, but it will only work for TV signals sent OTA or unencrytpted down the cable. i.e. the type of cable signal where you can plug it directly into a TV. In your case I assume that Cox have encrypted the signal so you have to use their Cable box to watch the signals.
Just think of a Slingbox as a TV that happens to send it's signal down the Internet rather than to a screen. So it will need exactly the same 'extra' kit as you would need to install a new TV in your bedroom. Another cable box maybe ?
this is how i resolved my issue;
1) i connected the slingbox using the components cables to the cable box, and from the cable box to the TV
2) i connected the coax cable from the secondary output directly into the slingbox (so that it is using the internal TV tuner)
3) i connected the composite cables to the DVD player (just because i had the cables. i usually don't watch dvd)
then i re-ran the setup, configured HD, SD and coax sources and now on my iphone or computer i can choose the source. so if i choose coax, someone can watch another channel on the TV without interfering with each other.
Obviously the coax does not get all the channels that the cable box gets, however it served my purpose perfectly.
I'm not sure i have the internet connection set up properly but everything works so i'm not going to mess with that anymore.
hope this will help other people.