Deep Dive: E6B06
The correct answer is D: As a VHF/UHF mixer or detector. Which of the following is a common use of a Schottky diode is as a VHF/UHF mixer or detector. Schottky diodes are commonly used in mixers and detectors at VHF/UHF. For amateur radio operators, this is important for component knowledge. Understanding this helps when using Schottky diodes.
Why Other Answers Are Wrong
Option A: Incorrect. In oscillator circuits as negative resistance element isn't common - Schottky diodes are used as mixers/detectors. Negative resistance isn't the use. Option B: Incorrect. As variable capacitance in AFC circuit isn't common - Schottky diodes are used as mixers/detectors. Variable capacitance isn't the use. Option C: Incorrect. In power supplies as constant voltage reference isn't common - Schottky diodes are used as mixers/detectors. Voltage reference isn't the use.
Exam Tip
Schottky diode common use = VHF/UHF mixer or detector. Think 'S'chottky = 'S'ignal mixing/'D'etection. Schottky diodes are commonly used in mixers and detectors at VHF/UHF. Not negative resistance, not variable capacitance, not voltage reference - just mixer/detector.
Memory Aid
Schottky diode common use = VHF/UHF mixer or detector. Think 'S'chottky = 'M'ixer/'D'etector. Schottky diodes are commonly used in mixers and detectors at VHF/UHF. Important for component knowledge.
Real-World Example
A Schottky diode: A common use is as a VHF/UHF mixer or detector. Schottky diodes have low forward voltage and fast switching, making them ideal for these applications. This is the use - VHF/UHF mixer or detector.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E6B
Reference: 2024-2028 Question Pool · E6 - Circuit Components
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E6B topic.