I have an RF modulator for a Television (Composite to Coaxial) that I am hooking up a raspberry pi to, I want to be able to take the outgoing rf signal from the modulator, then amplify it and transmit it to TV receivers in my house, I don't want to put up with wires and this is the only way I plan on going about all of this. What device should I use to transmit the RF signals being created by the modulator or what circuit design do you suggest.

 

You may have enough output from the modulator to do it without an amplifier. Is the modulator a UHF or a VHF model?