The supported 5GHz channels on the EMR3000 when the country code is set to USA are the non-DFS channels, namely, 36, 40, 44, 48, 149, 153, 157, and 161. This means that the EMR3000 does not have the option to enable channels on the U-NII 2A (channels 52-64) and U-NII 2E (channels 100-144).