This article is from the Digital Broadcast Satellites FAQ, by Brian Trosko firstname.lastname@example.org with numerous contributions by others.
Concerns about PIP are similar in nature to concerns
about simultaneous viewing of two channels.
In order to watch two satellite channels at a time, two
receivers are necessary. So, if you want to spend the dough,
PIP can work, so long as the television is the sort which
accepts input from an external tuner for PIP purposes.
If the television has a second internal television tuner
for its PIP, and cannot accept input from an external tuner,
then PIP will not work properly with the satellite receiver.