https://appleinsider.com/articles/08/03/31/exploring_time_capsule_wifi_802_11n_and_the_5ghz_band
Exploring Time Capsule: WiFi 802.11n and the 5GHz band | AppleInsider
Earlier versions of the WiFi specification all used the 2.4GHz radio spectrum. The new 802.11n standard, supported in Time Capsule, the square AirPort Extreme,...
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