When the radiated power from the antenna exceeds 50 W ERP The height above ground to the lowest point of the antenna is less than 2 m and the radiated power from the antenna exceeds 500 W ERP The height above ground to the lowest point of the antenna is less than 10 m and the radiated power from the antenna exceeds 500 W ERP The repeater transmitter is activated for more than 6 minutes without 30 seconds pauses 2