Licensing in the 71-76 GHz, 81-86 GHz and 64-66 GHz bands | Ofcom
Ofcom is making these bands available for short-haul fixed links on 8th of March 2007. They could allow very high bandwidth point to point links.
Ofcom will maintain a database/registry of links so interference issues can be minimised, however it's expected industry will self-regulate.
Unfortunately there's very little radio equipment available that operates in these bands and equipment costs will be prohibitive for all but high end users (the spectrum available will allow gigibit or greater link speeds), so it's more suited to intra-building applications (LAN extensions) rather than any kind of backhaul network. The license cost is also relatively high - £50 per link - again suiting more to very short-haul LAN extension links rather than a multi-hop backbone network.
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