Discuss problems produced by the limited range of the electromagnetic spectrum available for communication purposes.
How do I go about in this dot point.
Basically your points here will concern the fact that we only have a limited number of channels. Because we can only use a certain range of the EM spectrum
safely, that limits how many frequencies we can use to communicate.
Practically, this causes a congestion of frequencies. We need to allocate frequencies to certain purposes and ensure no one overlaps; without these precautions, you'd get interference everywhere. For example, FM radio stations get frequencies somewhere near 80-110 MHz in Australia (with some research you could probably get the actual allocations), these are the only ones they can use.
Really, you can summarise this in your notes as just
congestion of frequencies, I didn't have much more than that