This article is from the TeleVision Receive Only Satellite-TV FAQ, by TVRO Hobbyists drlev@hotmail.com with numerous contributions by others.
There are two main options for a multiple TV setup. You can slave
a second TV to the main receiver by splitting the coaxial cable
from the "RF OUT to TV" connection so that one cable goes to the
primary TV and one goes to the second TV. You can then change
channels using your UHF remote. Of course, everyone in the house
will have to watch the same channel on both TVs. This setup is
not recommended with a IF-only remote system.
The other option is to get a second receiver and slave it to the
master (main) receiver. The master receiver will have all the
connections for positioning the dish, and polarization, if your
feed uses a servo motor. DO NOT attempt to dual wire the actuator
and/or the servo motor to *both* receivers as they are NOT
designed for this!! This setup allows for viewing different
channels on different TVs; however, it is limited to viewing on
the same satellite and channels with the same polarity (more on
polarity later). For long cable runs you may want to use RG-6
coaxial cable from the splitters to the slave receiver. For
shorter runs standard RG-59 cables work fine.
 
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