Propagation: Antennas and radio waves

What is it exactly that these sometimes oddly shaped devices do in the overall big scheme of radio transmission and reception?

There are many concerns when it comes to proper antenna care, installation, and fault detection. Sometimes ideas that look good at the time may actually interfere with signal radiation patterns. Using some types of protective tape on antenna leading edge or not having a good bond to the surrounding airframe may result in a buildup of electrostatic charge causing a degraded signal. Adjusting rabbit ears on the fuselage of an aircraft at 40,000 feet is something that will not result in living happily ever after. AMT

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