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Which risk increases significantly when voltage standing-wave ratio rises on transmission cabling?

A)Premature magnetron tube failure
B)Increased antenna array beamwidth
C)Signal phase distortion lessens
D)Lowered receiver sensitivity occurs

💡 Explanation

High VSWR causes increased power reflections back towards the source, because of impedance mismatches in the line; therefore, magnetron back-heating rises and tube lifespan shortens, rather than changes to antenna properties or signal fidelity downstream.

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