I am planning to get a multi-system TV set, so that I can watch PAL discs as well. My question is: while I assume any multi-system TV is compatible with the American broadcast system, is it also fully compatible with our cable system too, so that I don't need to have a cable set top box to do the channel switching. Is this true?

By the way, I know our video broadcast signal is NTSC, what about the audio signal?

I know this doesn't answer your question, but why not just get an NTSC/PAL player, which would be considerably cheaper than a multi-standard TV?

As i live in europe (PAL) I know for a fact that our multisystem tv's (almost all are)will not work for cable operation, only in video mode (RGB, SVHS, SCART,that european connector). This is because our broadcast frequency band is not the same. The pal system uses more bandwith than NTSC. Also the stereo sound broadcast is different, we have analog and digital systems but they are all incompatible. You could connect a standard VCR (NTSC, Never the same colour)and use it as a tuner, connected to the video input of the multi system pal tv. If the multisystem tv you want to have is ment for use in the USA it will work with cable I think. But I think you don't have them at all.