What is the primary use of a Beverage antenna?
The correct answer is A: Directional receiving for MF and low HF bands. The primary use of a Beverage antenna is directional receiving for MF and low HF bands. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. For amateur radio operators, this is ideal for weak-signal receiving. Understanding this helps when designing receiving systems.
Exam Tip
Beverage antenna use = directional receiving for MF and low HF. Think 'B'everage = 'B'ig 'R'eceiving antenna for 'L'ow frequencies. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. Not transmitting, not higher HF, not portable - just directional receiving for MF/low HF.
Memory Aid
"Beverage antenna use = directional receiving for MF and low HF. Think 'B'everage = 'B'ig 'R'eceiving. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. Ideal for weak-signal receiving."
Real-World Application
A Beverage antenna: A long wire (often hundreds of feet) oriented in one direction, used for directional receiving on MF and low HF bands (160m, 80m). Beverage antennas are excellent for weak-signal receiving - they provide directional reception with low noise. This is the primary use - directional receiving for MF and low HF bands.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Beverage isn't for directional transmitting - it's primarily a receiving antenna, not for transmitting. Transmitting isn't the use.
Option C: Incorrect. Beverage isn't for portable direction finding at higher HF - it's for MF and low HF, not higher HF. Higher HF is wrong.
Option D: Incorrect. Beverage isn't for portable direction finding - it's a fixed receiving antenna, not portable. Portable is wrong.
题目解析
The correct answer is A: Directional receiving for MF and low HF bands. The primary use of a Beverage antenna is directional receiving for MF and low HF bands. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. For amateur radio operators, this is ideal for weak-signal receiving. Understanding this helps when designing receiving systems.
考试技巧
Beverage antenna use = directional receiving for MF and low HF. Think 'B'everage = 'B'ig 'R'eceiving antenna for 'L'ow frequencies. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. Not transmitting, not higher HF, not portable - just directional receiving for MF/low HF.
记忆口诀
Beverage antenna use = directional receiving for MF and low HF. Think 'B'everage = 'B'ig 'R'eceiving. Beverage antennas are long-wire receiving antennas designed for low-frequency directional reception. Ideal for weak-signal receiving.
实际应用示例
A Beverage antenna: A long wire (often hundreds of feet) oriented in one direction, used for directional receiving on MF and low HF bands (160m, 80m). Beverage antennas are excellent for weak-signal receiving - they provide directional reception with low noise. This is the primary use - directional receiving for MF and low HF bands.
错误选项分析
Option B: Incorrect. Beverage isn't for directional transmitting - it's primarily a receiving antenna, not for transmitting. Transmitting isn't the use. Option C: Incorrect. Beverage isn't for portable direction finding at higher HF - it's for MF and low HF, not higher HF. Higher HF is wrong. Option D: Incorrect. Beverage isn't for portable direction finding - it's a fixed receiving antenna, not portable. Portable is wrong.
知识点
Beverage antenna, Directional receiving, MF and low HF bands, Receiving antenna
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.