What more RF equipment do I need to play video games?

Question

With my NES top-loader, and soon an old famicom system*, I need RF equipment to play this. With the NES, I already have an RF switch. But where does it plug into? and/or what do I need to be able to plug it in and play?

Similar set up to the nes so, same thing.

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Thank you for your time!

Answer 1

yay best answer!