General exam question G6B04
Subelement G6, CIRCUIT COMPONENTS· Group G6B
What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?
- A.50 MHz
- B.500 MHz
- C.4 GHz (correct answer)
- D.40 GHz
WhyA typical upper frequency limit for low SWR operation of 50-ohm BNC connectors is about 4 GHz. Standard 50-ohm BNC connectors are commonly rated for reliable low-SWR performance up to around 4 GHz, beyond which their bayonet-style mechanical design starts to become electrically lossy and less repeatable, answer C. The lower values in A and B understate BNC's usable range, and 40 GHz (D) is well beyond what a BNC connector can support, that territory belongs to specialized microwave connectors.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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