Technician exam question T9B10
Subelement T9, ANTENNAS AND FEED LINES· Group T9B
What is the electrical difference between RG-58 and RG-213 coaxial cable?
- A.There is no significant difference between the two types
- B.RG-58 cable has two shields
- C.RG-213 cable has less loss at a given frequency (correct answer)
- D.RG-58 cable can handle higher power levels
WhyRG-213 coaxial cable has less loss than RG-58 at a given frequency. RG-213 uses a larger center conductor and more dielectric material than the thinner RG-58, and that larger size gives it noticeably less attenuation per foot at a given frequency, answer C. The two cables are electrically different in exactly that way (A is wrong), the number of shield layers isn't the defining difference here (B), and it's RG-213, the larger cable, not the thinner RG-58, that handles higher power levels (D).
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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