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T9B02
What is the most common impedance of coaxial cables used in amateur radio?
Pick an answer to check it.
Answer: B. 50 ohms
50 ohms is the most common impedance for coaxial cable in amateur radio. Most ham transceivers are designed for a 50-ohm load. 75-ohm coax is common for TV, but it is not one of the choices here.
Tip: Ham coax is 50 ohms.