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Terrestrial Frequency Allocation uses ?

Your question is way.. too broad, as you're asking that for the whole FAT, which ignores the different technical characteristics of the many different bands involved. The 2017 document you've linked is also out of date. I'd recommend the live table instead:


So if you want a useful answer, then you need to be more specific about which frequencies have an interest.
 
Much of the allocation is historic in nature or allied to international agreements, and may not appear ‘logical’ on first inspection.

As Mark alludes, this is not a simple question to attempt to answer in the broad sense.
 
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At a general level it is probably more useful to consider the frequency bands (as against allocations).


Each band has different characteistics and is useful for different purposes.

Click through the Wikipedia link for information on each band.

Over time the "most useful" frequencies have moved from lower frequency to higher frequency bands as technology has allowed and I would assume that process will continue.
 
Since we’re talking In broad brush style:

The higher the frequency, the higher the information carrying capability.

Higher frequencies are more affected by attenuation and multipath effects. Better at short distances.

Lower frequencies can use ionspheric effects to bounce a signal around the world. Better at long distances.
 
Sorry chaps but the spectrum is a mystery to me.

I was just looking for some easy gains, if any are to be had, by shutting down TV (as it's rubbish) and wondering where that spectrum could be put to better use.
 
Its not just selecting a piece of the spectrum. As well as the physics highlighted above it is the practicalities.

Most of the spectrum is allocated to existing uses, some of which has to stay (military) or would take time to clear (e.g Analogue TV, FM). Any change requires sufficient notice and sufficient time for the migration.

You cannot assume always that we can do without the old or that the new addresses all the functionality of the old. Also you get issues like in the US where they have just had issues using N77 for 5G and the interference with altimeters made to earlier specifications. So due diligence is always required.

The technology will determine what is the best to use initially but then this is then influenced with what is practical for harmonisation across countries which will keep any technology/device costs down. If a country goes alone then they may be saddled with more costly adoption.

We will be getting mmWave going forward but for general mobile I think its our fault we haven't got the coverage/speeds we need. The lack of sharing between providers, implementations of 3G, 4G and now 5G at primarily on existing GSM sites rather than optimised locations has meant a patchwork of mast coverage. Added to this the monetisation of the spectrum by the UK Government released with restricted non contiguous allocations.

I do wonder what it would look like if all providers shared a single infrastructure with taller masts located centrally to cover the required cells.

My view is that I don't think it is the mast that people dislike it is the eyesore of cabinets on our road sites (which are getting bigger). They should be suitably sited in an enclosure (like electric sub stations). But of course its free to use the pavement/verge.
 
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On the subject of harmonisation, just how much does licensing bring in, is it a one off, or annual income ?
 
...they could put up the annual license charges, increase the amount of spectrum that is auctioned off or a whole host of things to increase the one time and recurring windfall.

However usage of the spectrum continually evolves over time in respect of demand, technology changes, international changes, etc. A whole host of forces; "harmonisation" thus is a moving target.

I'm not sure how harmonisation in itself would necessarily benefit the revenue opportunity of those that administer it - there are possibly wider and greater collective benefits to us all that it is managed efficiently against the various competing pressures.
 
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