Updated: Dec 9, 2025 | Source: 2024-2028 Question Pool | Topic: E2C
E2C04E2C

Which of the following frequencies can be used for amateur radio mesh networks?

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Deep Dive: E2C04

The correct answer is B: Frequencies shared with various unlicensed wireless data services. Which of the following frequencies can be used for amateur radio mesh networks is frequencies shared with various unlicensed wireless data services. Mesh networks use frequencies shared with unlicensed services (e.g., 2.4 GHz, 5.8 GHz). For amateur radio operators, this is important for mesh network operation. Understanding this helps when setting up mesh networks.

Why Other Answers Are Wrong

Option A: Incorrect. HF frequencies where digital communications are permitted isn't correct - mesh networks use VHF/UHF/microwave frequencies shared with unlicensed services. HF isn't used. Option C: Incorrect. Cable TV channels 41-43 isn't correct - mesh networks use frequencies shared with unlicensed services, not cable TV channels. Cable TV channels isn't correct. Option D: Incorrect. 60-meter band channel centered on 5373 kHz isn't correct - mesh networks use VHF/UHF/microwave frequencies, not 60 meters. 60 meters isn't used.

Exam Tip

Mesh network frequencies = frequencies shared with unlicensed wireless data services. Think 'M'esh 'N'etwork = 'M'icrowave/'N'earby unlicensed frequencies. Mesh networks use frequencies shared with unlicensed services (e.g., 2.4 GHz, 5.8 GHz). Not HF, not cable TV, not 60m - just shared unlicensed frequencies.

Memory Aid

Mesh network frequencies = frequencies shared with unlicensed wireless data services. Think 'M'esh 'N'etwork = 'U'nlicensed frequencies. Mesh networks use frequencies shared with unlicensed services. Important for mesh network operation.

Real-World Example

Amateur radio mesh networks: They use frequencies shared with various unlicensed wireless data services, such as 2.4 GHz (Wi-Fi band) and 5.8 GHz. These frequencies are shared with commercial Wi-Fi and other unlicensed services. This is what frequencies can be used - frequencies shared with unlicensed wireless data services.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E2C

Reference: FCC Part 97.303

Key Concepts

Amateur radio mesh networks Frequencies Unlicensed wireless data services Shared frequencies

Verified Content

Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E2C topic.