I have 2 raspberry pis. One running the beta version of the Raspberry OS and the other Kali. Here's the details a of my Kali:
Linux kali 4.19.118-Re4son-v8l+ #1 SMP PREEMPT Thu May 7 02:54:03 UTC 2020 aarch64 GNU/Linux

Distributor ID: Kali
Description: Kali GNU/Linux Rolling
Release: 2020.3
Codename: kali-rolling


On the RP OS, I can get my 5.8Ghz network to show up and connect to, no problem. With Kali, I only see my 2.4Ghz wifi SSID. Is 5.8GHz not supported? If so, how do I get it to work?