I don't know of any WiFi chips that explicitly allow you to go below channel 1 (I know of a few that would let you go below if you twizzled the PLL directly, but generally that was very hackish) and they certainly never test there.
Whereas, nobody designs a WiFi chip that doesn't actually go to Channel 14.
I don't know of any WiFi chips that explicitly allow you to go below channel 1 (I know of a few that would let you go below if you twizzled the PLL directly, but generally that was very hackish) and they certainly never test there.
Whereas, nobody designs a WiFi chip that doesn't actually go to Channel 14.