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سؤال 361

What is antenna gain?

  1. The additional power that is added to the transmitter power
  2. The additional power that is required in the antenna when transmitting on a higher frequency
  3. The increase in signal strength in a specified direction compared to a reference antennaپاسخ درست
  4. The increase in impedance on receive or transmit compared to a reference antenna

توضیح

Gain describes how much stronger the signal is in a chosen direction than it would be from a reference antenna fed with the same power, so it is a redistribution of power rather than an addition of it. An antenna cannot add power to the transmitter output.

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شروع تمرین
سؤال 361: What is antenna gain? · FCC Technician Class (Element 2) · Questena