BasicB-006-005-001
What does an SWR reading of 1:1 mean?
A
Answer
Antennas and feed lines
Type
A
The best impedance match has been attained
B
An antenna tuner is needed at the transmitter
C
An impedance transformer is needed at the antenna feed point
D
Reflected power equals forward power
Answer Notes
Standing Wave Ratio (SWR) measures how well the impedance of the antenna system matches the impedance of the transmitter. An SWR of 1:1 represents a perfect match, meaning that all forward power is transferred to the antenna and none is reflected back down the feedline.
When you have a perfect 1:1 match, no antenna tuner or impedance transformer is needed because the system is already optimized. The option suggesting 'reflected power equals forward power' describes infinite SWR, which is the exact opposite of a perfect 1:1 match.
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What does an SWR reading of less than 1.5:1 mean?