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National Association of Broadcasters Engineering Handbook, 11th Edition by Garrison C. Cavell

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Chapter7.12

AM Antenna System Maintenance

John F. Warner

Vice President AM Engineering, iHeartMedia

Overview

It is important to understand that antenna systems do not operate without considerable supervision and maintenance. Difficulties can arise either within the antenna system itself, or the environment in which it operates.

Maintenance of AM antenna systems can be broadly divided into issues of

  • Electrical changes or failures
  • Mechanical changes or failures.

Problems typical of AM antenna systems can be generally defined as

  • Catastrophic, such as caused by lightning
  • Gradual degradation or “drift.”

Preventive Maintenance

A schedule of routine preventative maintenance is essential to reliable operation and should be established and rigidly ...

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