Which of the following describes a type N connector?
The correct answer is A: A moisture-resistant RF connector useful to 10 GHz. A description of a type N connector is a moisture-resistant RF connector useful to 10 GHz. N connectors are robust, weather-resistant connectors that work well up to 10 GHz. For amateur radio operators, this is important for outdoor installations. Understanding this helps when selecting connectors.
Exam Tip
Type N connector = moisture-resistant RF connector useful to 10 GHz. Think 'N' connector = 'N'ot affected by 'M'oisture, useful to '1'0 GHz. Robust, weather-resistant connectors that work well up to 10 GHz. Not bayonet data connector, not low noise VHF, not PL-259 variant - just moisture-resistant 10 GHz connector.
Memory Aid
"Type N connector = moisture-resistant RF connector useful to 10 GHz. Think 'N' connector = 'N'ot affected by moisture. Robust, weather-resistant connectors that work well up to 10 GHz. Ideal for outdoor installations."
Real-World Application
You install an antenna outdoors and need a weather-resistant connector. You use a type N connector - it's moisture-resistant and works well up to 10 GHz. N connectors are commonly used for outdoor installations because of their weather resistance and high-frequency capability.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. N connectors aren't small bayonet connectors for data circuits - that's more like BNC. N connectors are larger and for RF, not data.
Option C: Incorrect. N connectors aren't specifically low noise figure VHF connectors - they're general-purpose RF connectors, not specifically for low noise.
Option D: Incorrect. N connectors aren't nickel-plated versions of PL-259 - they're a different design entirely. PL-259 is UHF connector, N is different.
题目解析
The correct answer is A: A moisture-resistant RF connector useful to 10 GHz. A description of a type N connector is a moisture-resistant RF connector useful to 10 GHz. N connectors are robust, weather-resistant connectors that work well up to 10 GHz. For amateur radio operators, this is important for outdoor installations. Understanding this helps when selecting connectors.
考试技巧
Type N connector = moisture-resistant RF connector useful to 10 GHz. Think 'N' connector = 'N'ot affected by 'M'oisture, useful to '1'0 GHz. Robust, weather-resistant connectors that work well up to 10 GHz. Not bayonet data connector, not low noise VHF, not PL-259 variant - just moisture-resistant 10 GHz connector.
记忆口诀
Type N connector = moisture-resistant RF connector useful to 10 GHz. Think 'N' connector = 'N'ot affected by moisture. Robust, weather-resistant connectors that work well up to 10 GHz. Ideal for outdoor installations.
实际应用示例
You install an antenna outdoors and need a weather-resistant connector. You use a type N connector - it's moisture-resistant and works well up to 10 GHz. N connectors are commonly used for outdoor installations because of their weather resistance and high-frequency capability.
错误选项分析
Option B: Incorrect. N connectors aren't small bayonet connectors for data circuits - that's more like BNC. N connectors are larger and for RF, not data. Option C: Incorrect. N connectors aren't specifically low noise figure VHF connectors - they're general-purpose RF connectors, not specifically for low noise. Option D: Incorrect. N connectors aren't nickel-plated versions of PL-259 - they're a different design entirely. PL-259 is UHF connector, N is different.
知识点
Type N connector, Moisture-resistant, 10 GHz, RF connector
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.