[igracgq (OP)]

if radio frequencies travel forever into space, would spacestations be receiving mixed messages from different radio stations, or do they have their own reserved frequency on which they communicate?

Moreover, is it because world is round that the frequencies leave earth and travel into space? do they travel in parallel lines or are they disbursed in all directions?
Therefore, if earth was flat, does that mean that radio stations around the world in 88.8-107mhz would interfere with each other?

Thanks

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