So you've got a console (or perhaps several) that is/are RF-only but your TV of choice either doesn't have an RF input or it's otherwise not playing nicely with your console (I can relate to the latter, as my 2011 flat screen's RF input doesn't work with ANY consoles)? You're basically left with two options: perform a composite AV mod on your console OR get an RF demodulator, which converts the RF signal to composite. VCRs can act as demodulators, but they take up a decent amount of space. Devic