Deep Dive: E6E04
The correct answer is A: 50 ohms. Which is the most common input and output impedance of MMICs is 50 ohms. MMICs are typically designed for 50-ohm impedance. For amateur radio operators, this is important for RF circuit design. Understanding this helps when using MMICs.
Why Other Answers Are Wrong
Option B (300 ohms): Incorrect. 300 ohms isn't common - 50 ohms is the standard. 300 ohms isn't the impedance. Option C (450 ohms): Incorrect. 450 ohms isn't common - 50 ohms is the standard. 450 ohms isn't the impedance. Option D (75 ohms): Incorrect. 75 ohms is for video, not MMICs - 50 ohms is standard for MMICs. 75 ohms isn't the impedance.
Exam Tip
MMIC input/output impedance = 50 ohms. Think 'M'MIC = 'M'ostly '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Not 300Ω, not 450Ω, not 75Ω (video) - just 50 ohms.
Memory Aid
MMIC input/output impedance = 50 ohms. Think 'M'MIC = '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Important for RF circuit design.
Real-World Example
MMICs: The most common input and output impedance is 50 ohms. This matches standard RF systems and makes MMICs easy to integrate. This is the impedance - 50 ohms for MMICs.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E6E
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 E6E topic.