GSM900 is 890-915 MHz; 802.11ah gets around this by using region specific frequencies that sidestep GSM900: 902-928 MHz in the US (26 MHz bandwidth) 863-868

GSM900 is 890-915 MHz; 802.11ah gets around this by using region specific frequencies that sidestep GSM900: 902-928 MHz in the US (26 MHz bandwidth) 863-868 MHz in Europe (5 MHz bandwidth) 916.5-927.5 MHz in Japan (11 MHz bandwidth) Limited bandwidth, especially in Europe, will to lead to both higher power consumption and lower real-world range. >The PHY layer will allow devices and APs to operate over different sub-1GHz ISM bands, depending on the country regulations: 863-868 MHz in Europe, 902-928 MHz in the US, and 916.5-927.5 MHz in Japan. China, South Korea, and Singapore also have specific channels. Reference: http://www.networkcomputing.com/wireless-infrastructure/sub-1ghz-wireless-the-low-power-wifi-solution/a/d-id/1315850 http://www.networkcomputing.com/wireless-infrastructure/sub-...