During an installation of a wireless network in a country that follows ETSI standards, the customer is requesting to manually set the channels on the 2.4GHz radios. Which channels are recommended…

The correct answer is D. 1, 5, 9, 13. In ETSI-regulated regions (Europe and others), the 2.4 GHz band allows channels 1 through 13. With 13 channels available and each 802.11 channel spanning 20 MHz with 5 MHz spacing, channels 1, 5, 9, and 13 (D) provide four quasi-non-overlapping channels with minimal…

Wireless Infrastructure

Question

During an installation of a wireless network in a country that follows ETSI standards, the customer is requesting to manually set the channels on the 2.4GHz radios. Which channels are recommended for use in this deployment?

Exhibit

Options

A52, 56, 60, 64
B1, 6, 11, 14
C36, 40, 44, 48
D1, 5, 9, 13

How the community answered

(20 responses)

B
5% (1)
D
95% (19)

Explanation

In ETSI-regulated regions (Europe and others), the 2.4 GHz band allows channels 1 through 13. With 13 channels available and each 802.11 channel spanning 20 MHz with 5 MHz spacing, channels 1, 5, 9, and 13 (D) provide four quasi-non-overlapping channels with minimal interference between them. This is the ETSI recommendation for channel reuse. In contrast, North American FCC regulations only permit channels 1–11, limiting the standard non-overlapping set to 1, 6, and 11. Channels 36, 40, 44, 48 (A, C) are 5 GHz channels, and channel 14 (in option B) is only permitted in Japan.

Topics

#ETSI#2.4GHz channels#channel planning#regulatory compliance

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