T4A02 - Which of the following should be considered when selecting an accessory SWR meter?

Question

Which of the following should be considered when selecting an accessory SWR meter?

Answer Options

  • A) The frequency and power level at which the measurements will be made
  • B) The distance that the meter will be located from the antenna
  • C) The types of modulation being used at the station
  • D) All these choices are correct

Correct Answer: A


Explanation

When selecting an SWR meter, you must ensure that its internal components (especially its sensors) are designed to operate accurately at the specific frequencies and power levels you plan to use. Most meters are designed to work well in a limited range; for instance, a dedicated VHF/UHF meter may be highly inaccurate or fail if used for HF, and vice-versa.

Therefore, the most important factors to consider are the frequency and power level at which the measurements will be made. Using a meter outside its specified range (its design limits) can result in highly inaccurate readings or, potentially, irreversible damage to the meter itself.


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