For an operating frequency of 450 MHz, what length of a pair of conductors is considered to be a transmission line?(a) 0.754ft(b) 0.219ft(c) 0.35ft(d) 0.542ftI got this question in an interview for job.I'd like to ask this question from Transmission Line Basics topic in division Transmission Lines of Avionics

For an operating frequency of 450 MHz, what length of a pair of conduc

1.	For an operating frequency of 450 MHz, what length of a pair of conductors is considered to be a transmission line?(a) 0.754ft(b) 0.219ft(c) 0.35ft(d) 0.542ftI got this question in an interview for job.I'd like to ask this question from Transmission Line Basics topic in division Transmission Lines of Avionics
Answer» Correct answer is (b) 0.219ft To explain I would say: A PAIR of conductors does not act as a transmission line unless it is at LEAST 0.1λ long. λ = 984/450 = 2.19 ft 0.1λ = 2.19 X (0.1) = 0.219 ft.

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