Re: i have tested it on my self
Yes but that could be wrapped around a rod a few thousand times or he could connect up to the plumbing and use that.
Well, if you can source that much wire, sure, but it doesn't make an antenna that's physically that long.
In fact, it'll be a big inductor of a size big enough to give you a nasty zap of back-EMF should you try to disconnect it from power with your fingers. (And 433mHz is pretty bloody close to DC, better wait for a zero crossing!)
That amount of wire would pose a whopping big resistance too, my bet is you'll either absorb all the power before you radiate anything, or you'll melt the coil with the heat loss.
And who would you transmit to? You'd have to find someone willing to do the same with a receiver.