Channel bandwidth is different from channel tuning. One is occupied spectrum, the other is transmit frequency. 73, Don N2IRZ -----Original Message----- Dear PSDR List Members, HamWAN's PDF comparing various devices shows the QRT 5 ac: http://hamwan.org/Standards/Component%20Engineering/Client%20Hardware/antena... However, on the webpage http://hamwan.org/Standards/Component%20Engineering/Client%20Hardware.html it states: "Avoid Mikrotik's 802.11ac modems. These are incapable of tuning the 5 and 10 MHz channels used by HamWAN and are therefore incompatible." It is not unusual to find outdated material relating to electronic devices, and I think this is the case here, so I thought it best to check with the manufacturer. Below is the response from MikroTik Support confirming that the new version of the QRT 5 ac also supports 5 and 10 MHz band widths because of a new chipset in the "r2" revision. Just need to make sure you don't get the old version. 73 Alan WX7L