We also need to know what kind of cable/wiring is going to the TV and what kind of inputs the TV will accept. It sounds like you want to use the same wiring currently going to the TV from the cable/OTA. If it is coax cable going into the ANT input of the TV, you will need to use an
RF Modulator to convert the audio/video cables from the sat receiver to coax cable. You may also need an
A/B switch to select the sat or cable/OTA if the modulator doesn't do that for you like the one I linked to. You would need to do this BEFORE the coax gets to the splitter running to the back TV if you want the same signals in back as well as front.
Alternatively, you could run an HDMI cable from the sat receiver to the TVs HDMI input and you would select which input you want using the TV Remote. But this wouldn't give you the sat receiver output to the rear TV with out using an HDMI splitter and running another HDMI line to the rear.
You may also want to consider bringing two lines in from the satellite antenna and bringing two receivers from home. That way the two TVs could watch different programming.