Assertion: antenna's beam | /r/CapableOf | cover at most ​1⁄ 100 of the sky
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text: For example, if a high gain antenna makes a 1 watt transmitter look like a 100 watt transmitter, then the beam can cover at most ​1⁄ 100 of the sky (otherwise the total amount of energy radiated in all directions would sum to more than the transmitter power, which is not possible).