![]() If you have a dual band router ath1 will be displayed below ath0 with the same available settings. ![]() Here is what it changes: Wireless Physical InterfaceĪvailable Interfaces: athX (0, 1, 2 etc, varies by router as many routers have 2 or more radios in them) The standard provides Dynamic Frequency Selection (DFS) and transmit Power Control (TPC) to the IEEE 802.11a MAC. It was originally designed to address European regulations but is now applicable in many other countries. It solves problems like interference with satellites and radar using the same 5 GHz frequency band. Here's some information on what 80211h was supposed to do: IEEE 802.11h is the IEEE standard for Spectrum and Transmit Power Management Extensions. For example, Canada's max allowed EIRP is 36 dBm while its max allowed TX power is 30 dBm, with Canada selected and antenna gain at 0 dBi, the radios will never go above 30 dBm assuming they are capable of reaching that of course.Īvailable Settings: Off, 802.11h Loose, 802.11h Strict, 802.11d Maximum EIRP varies by nation and your max TX power will be capped by the regulatory domain if you have a powerful radio.
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