What hazard is created by touching an antenna during a transmission?
The correct answer is B: RF burn to skin. The hazard created by touching an antenna during transmission is RF burn to skin. RF energy can cause heating and burns when it flows through your body. The antenna has RF voltage and current, and touching it allows RF to flow through you, causing burns at contact points. For amateur radio operators, this is a real hazard, especially with high power or high frequencies. Understanding this helps prevent injuries. Never touch antennas while transmitting.
Exam Tip
Touching antenna during transmission = RF burn. Think 'R'F 'B'urn = 'R'F 'B'urns skin. RF energy flows through body, causing heating and burns at contact points. Not electrocution (different mechanism), not radiation poisoning (non-ionizing).
Memory Aid
"Touching antenna during transmission = RF burn. Think 'R'F 'B'urn = 'R'F 'B'urns skin. RF energy causes heating and burns when flowing through body. Never touch antennas while transmitting."
Real-World Application
You accidentally touch your 2-meter antenna while transmitting 50 watts. RF energy flows through your hand, causing heating and a burn at the contact point. The burn can be severe, especially with higher power or if you can't let go quickly. This is why you should never touch antennas while transmitting - always turn off power first.
Key Concepts
Why Other Options Are Wrong
Option A (Electrocution): Incorrect. RF energy doesn't cause electrocution in the same way AC power does - it causes heating/burns, not the same type of electrical shock. The mechanism is different.
Option C (Radiation poisoning): Incorrect. RF is non-ionizing radiation and doesn't cause radiation poisoning. That's from ionizing radiation (nuclear).
Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only RF burns are the real hazard.
题目解析
The correct answer is B: RF burn to skin. The hazard created by touching an antenna during transmission is RF burn to skin. RF energy can cause heating and burns when it flows through your body. The antenna has RF voltage and current, and touching it allows RF to flow through you, causing burns at contact points. For amateur radio operators, this is a real hazard, especially with high power or high frequencies. Understanding this helps prevent injuries. Never touch antennas while transmitting.
考试技巧
Touching antenna during transmission = RF burn. Think 'R'F 'B'urn = 'R'F 'B'urns skin. RF energy flows through body, causing heating and burns at contact points. Not electrocution (different mechanism), not radiation poisoning (non-ionizing).
记忆口诀
Touching antenna during transmission = RF burn. Think 'R'F 'B'urn = 'R'F 'B'urns skin. RF energy causes heating and burns when flowing through body. Never touch antennas while transmitting.
实际应用示例
You accidentally touch your 2-meter antenna while transmitting 50 watts. RF energy flows through your hand, causing heating and a burn at the contact point. The burn can be severe, especially with higher power or if you can't let go quickly. This is why you should never touch antennas while transmitting - always turn off power first.
错误选项分析
Option A (Electrocution): Incorrect. RF energy doesn't cause electrocution in the same way AC power does - it causes heating/burns, not the same type of electrical shock. The mechanism is different. Option C (Radiation poisoning): Incorrect. RF is non-ionizing radiation and doesn't cause radiation poisoning. That's from ionizing radiation (nuclear). Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only RF burns are the real hazard.
知识点
RF burns, Antenna contact, RF hazards, Transmission safety
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.