Does anybody have a decent understanding of why they would choose to build on top of &#x27;millimeter wave&#x27; tech?<p>To a casual observer with a bit of amateur RF experience, &#x27;millimeter wave&#x27; frequencies seem like a poor choice, as bands in the millimeter wave spectrum are going to suffer from lots of signal loss just due to attenuation from air, humidity, and rain. And these bands won&#x27;t have particularly great range or penetration capabilities.