The reason 6Ghz was introduced with WiFi 6E and 7 was because 2.4Ghz and 5Ghz was very busy.
My question is why isn’t there anything in between? Why isn’t there a 3Ghz, 3.5Ghz, 4Ghz, etc?
Also, what if things that require very little data transmission used something lower than 2.4Ghz for longer range? (1Ghz or something?)
Radiowaves are not free real estate. Every country has their own laws on what frequencies you’re allowed to use for what.
2.4ghz frequencies are basically as unregulated as they can get in the US, so that’s why wifi used that for the longest time. I’m not sure what devices used 5ghz before, but they took that frequency for wifi. You have to fight for every mhz you can get in radio waves.
Here’s the wiki article talking a bit about this. I’ve never heard of like 3.6ghz wifi so that’s interesting. https://en.wikipedia.org/wiki/Wi-Fi#Operational_principles%3A~%3Atext=some+cases+severely.-%2CWaveband%2C-[edit]