It is generally true that fewer devices are currently working on 5GHz and causing interference, compared to 2.4GHz devices. But this is changing over time. It wasn’t that long ago everyone moved from 900 MHz to 2.4GHz to avoid interference, and this ‘band jumping’ effect will catch up with 5GHz eventually.

It’s not just wi-fi based devices that are operating at 5GHz, cordless phones, radar, perimeter sensors and digital satellites already are.

On Friday, we visited a client in London, and when conducting a survey found 30 devices working at 2.4GHz in the immediate area causing interference, but only 3 working at 5GHz. Interestingly, they were all using the same channel, so it made sense for our smart router to find a free channel to work from which has increased the strength of the network significantly in their offices in a crowded part of the city.