How do we not have infinite number of bands available if we just use more decimals? Ie, 99.3 FM becomes 99.35, 99.353, and so on… how “close” can stations be?
How do some stations interference with each other while being far away numerical, but other stations are a decimal point away with no interference?
I’m doing HAM radio study for no reason other than it sounds neat and it’s cool to have a technical skill, but I’m having trouble wrapping my head around how we can’t just subdivide a limited band X number of times to fit more people in without interference.
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Generally, radio waves occupy a certain “space” (bandwidth) of the radio spectrum based upon the information they carry. Voice cannot be less than 20khz wide since that is the range of human speech. You cannot overlap two signals since both will interfere with each other and be unintelligible.
Think of a highway. Cars are 8ft wide, but if you paint the road lines 6ft wide, you still can’t fit more cars in the road since they are still the same width and didn’t get smaller.
There is a shift in the vhf and uhf spectrum away from analog modes towards digital modes and narrower bandwidths due to the high demands for radio spectrum.
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