Amateur Extra Class: 2020–2024
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E9E11:

What is the primary purpose of phasing lines when used with an antenna having multiple driven elements?

  1. It ensures that each driven element operates in concert with the others to create the desired antenna pattern
  2. It prevents reflected power from traveling back down the feed line and causing harmonic radiation from the transmitter
  3. It allows single-band antennas to operate on other bands
  4. It creates a low-angle radiation pattern
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