Enabling the 5GHz radio on my DIR-855 causes a minimum -2dBm reduction in 2GHz radio output power. The power loss measurement was OTA (over the air) and was consistant across the 2GHz band (i.e. I measured at channels 1, 6 & 11.) A -2dBm power loss is a substantial drop. Can Dlink please tell me if this is indicates a potential problem with my router? Thank you.