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السؤال 143

Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

  1. To minimize voltage drop when transmittingالإجابة الصحيحة
  2. To provide a close match to the power supply output impedance
  3. To avoid RF interference
  4. To minimize radiative losses in the power cable

الشرح

A transmitting radio can draw ten or more amperes, and any resistance in the DC cable turns that current into a voltage drop at the radio. Short, heavy-gauge wire has low resistance, so the radio keeps its full supply voltage on transmit peaks.

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السؤال 143: Why are short, heavy-gauge wires used for a transceiver’s… · FCC Technician Class (Element 2) · Questena