I saw them mentioned in another HN thread recently. From the photos on their web site, they use Ubiquiti gear (probably the Ubiquiti airMax LiteBeam) which runs

I saw them mentioned in another HN thread recently. From the photos on their web site, they use Ubiquiti gear (probably the Ubiquiti airMax LiteBeam) which runs on 5ghz. https://support.common.net/hc/en-us/articles/115001438367-What-do-the-antennas-masts-look-like- https://support.common.net/hc/en-us/articles/115001438367-Wh...