Help, connecting multiple older systems

[burn_654]

I recently had to do a setup like that for using an older tv...what I ended up doing (pending you have some av cables for your systems):

Hooking up all the systems that can use AV cables (red-white-yellow) into an av switchbox (cheap nowadays) and then plug the output from that into a decent rf modulator. Not the fanciest way, but this had way less interference (and slightly better quality) for me than using multiple rf boxes into each other.