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G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an odd number of electrical quarter wavelengths long
B	The antenna feed point must be at DC ground potential
C	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
D	The feed line must be an even number of physical half wavelengths long

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