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2.8 km is pretty easy with two Ubiquiti Nanobridges for example, that's a short distance... Nice expensive COW trailer too.

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Yep, our backup/second link will be a Nanobridge-M5, the primary is using 38ghz DragonWave kit. Nat (who wrote that blog post)

Does the UK have any regulation of the 38ghz band? Based on the FCC info here in the US (http://transition.fcc.gov/oet/spectrum/table/fcctable.pdf) the 38ghz area of the spectrum seems to have only a small subset of bands that qualify for this use. Do you know the exact frequency the DragonWave kit uses?

Yeah, it's all licensed up there. We've got a license from OFCOM (UK's FCC equivalent) for the radio link.

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