There are a bazillion other narrower-than-wifi schemes that work in the same band. All the pre-wifi stuff, Symbol Spectrum24 and Xircom Netwave and Proxim HomeR

There are a bazillion other narrower-than-wifi schemes that work in the same band. All the pre-wifi stuff, Symbol Spectrum24 and Xircom Netwave and Proxim HomeRF, for instance. Ricochet poletops used a 1Mbps rate just like Bluetooth, and hopped it over the same chunk of spectrum. Heck, Bluetooth itself is a great example. Won't see that on a wifi stumbler, but it's certainly compliant.