Discussion
What is the main reason antenna specifications are quoted in decibels?
Answer: B
A link may span twelve orders of magnitude, so working logarithmically turns unwieldy products into sums and keeps every figure within a couple of significant digits. Accuracy is unaffected by the notation, regulations use decibels because the industry does rather than the reverse, and a decibel figure is meaningless without its reference, which is why dBi, dBd, dBm and dBW all exist as distinct units. Stating the reference is more important in decibels, not less.
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