There are 802.11ah chipsets advertised, but I've never seen one in action. See e.g. https://www.newracom.com/product/nrc7292/ https://www.newracom.com/product/

There are 802.11ah chipsets advertised, but I've never seen one in action. See e.g. https://www.newracom.com/product/nrc7292/ https://www.newracom.com/product/nrc7292/ Ubiquiti's Rocket M900 and AFAR are also "wifi" over 900 MHz ISM band solutions as well, though I'm not sure what if any standards they use. edit: looks like you can actually purchase a chip that uses 802.11ah: https://www.mouser.com/ProductDetail/Silex-Technology/SX-NEWAH-SP-US/?qs=rI7uf1IzohSOq9%2FF4YPvcQ%3D%3D https://www.mouser.com/ProductDetail/Silex-Technology/SX-NEW... along with a rpi compatible dev board: https://www.mouser.com/ProductDetail/Silex-Technology/SX-NEWAH-EVK-US/?qs=rI7uf1IzohSYrVLdDI6%252BMw%3D%3D https://www.mouser.com/ProductDetail/Silex-Technology/SX-NEW... There is so much crap (e.g. cordless phones) over the 900 MHz band that using this probably only makes sense in remote environments though.