The Crossfire RSSI has been scaled up in the most recent versions to a scale of 0% to 300%. This is because of the increased throughput on the Crossfire data link. Traditional remote controls can do 50Hz, which means 50 commands per second. The Crossfire is currently transmitting at 150Hz, or 150 commands per second. If we assume 50 commands per second to be 100% control, then 150 comands per second are 300% control. As the fast data uplink is easier to have missing packets, we opted to a figure that accurately represents your link quality. A good 150 Hz uplink will show 280%, whereas a good 50Hz uplink should be no lower than 90%.