Updated: Dec 9, 2025 | Source: 2024-2028 Question Pool | Topic: E4C
E4C10E4C

What is an advantage of having a variety of receiver bandwidths from which to select?

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Deep Dive: E4C10

The correct answer is C: Receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference. What is an advantage of having a variety of receiver bandwidths from which to select is that receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference. Matching bandwidth optimizes performance. For amateur radio operators, this is important for receiver operation. Understanding this helps when selecting bandwidths.

Why Other Answers Are Wrong

Option A: Incorrect. Adjusting noise figure of RF amplifier isn't the advantage - matching bandwidth optimizes SNR and minimizes interference. Noise figure adjustment isn't the advantage. Option B: Incorrect. Reducing power consumption isn't the advantage - matching bandwidth optimizes SNR and minimizes interference. Power consumption isn't the advantage. Option D: Incorrect. Receiving multiple frequencies simultaneously isn't the advantage - matching bandwidth optimizes SNR and minimizes interference. Multiple frequencies isn't the advantage.

Exam Tip

Variety of bandwidths advantage = can match modulation bandwidth, maximize SNR, minimize interference. Think 'V'ariety of 'B'andwidths = 'V'ersatile 'B'andwidth matching. Matching bandwidth optimizes performance. Not noise figure adjustment, not power consumption, not multiple frequencies - just bandwidth matching.

Memory Aid

Variety of bandwidths advantage = can match modulation bandwidth, maximize SNR, minimize interference. Think 'V'ariety of 'B'andwidths = 'M'atch modulation. Matching bandwidth optimizes performance. Important for receiver operation.

Real-World Example

Having a variety of receiver bandwidths: An advantage is that receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference. For example, narrow bandwidth for CW, wider for SSB. This is the advantage - bandwidth matching optimizes performance.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E4C

Reference: 2024-2028 Question Pool · E4 - Amateur Practices

Key Concepts

Variety of receiver bandwidths Match modulation bandwidth Maximize signal-to-noise ratio Minimize interference

Verified Content

Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E4C topic.