As subject line. I know it’s potentially possible to use a Pi or Vero 4K as a 2.4GHz WiFi hotspot. But can you use them as a 5GHz hotspot?
In theory, yes. However ConnMan seems to only support 2.4Ghz networks presently. A search suggests that this decision was made to ensure compatibility with as many devices as possible. This might be something that’s available in the future.
2.4Ghz should still give you a good throughput.
I expect it would, but that doesn’t address my rather weird use case, unfortunately. Not to worry.