Question
On what band do amateurs share channels with the unlicensed Wi-Fi service?
Answer Options
- A) 432 MHz
- B) 902 MHz
- C) 2.4 GHz
- D) 10.7 GHz
Correct Answer: C
Explanation
The unlicensed Wi-Fi (WLAN) service operates in several Industrial, Scientific, and Medical (ISM) bands. One of these primary bands is the 2.4 \text{ GHz} band.
Amateur radio also has an allocation in the 2.4 \text{ GHz} band (2300 to 2450 \text{ MHz}), which overlaps directly with the Wi-Fi frequencies (e.g., 2.400 to 2.483 \text{ GHz}). Amateurs use this spectrum for high-speed data, digital voice, and mesh networking. Since the amateur service is not permitted to communicate with unlicensed stations, care must be taken to avoid interference with the widely used Wi-Fi equipment.
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