Wi-Fi channel 108 — 5540 MHz
Channel 108 centres on 5540 MHz and occupies 5530–5550 MHz. Nothing else in the band overlaps it.
- Centre frequency
- 5540 MHz
- Occupied range
- 5530 – 5550 MHz
- Overlapping channels
- None
- 40 MHz partner
- 112
- Radar avoidance (DFS)
- yes
- Country limits
- None
The channels that clear each other
These are not copied from a chart — they are picked by comparing the ranges. Channel 14 is the fourth such slot, usable only in Japan.
Channels shared with radar
Channels 52 to 144 on 5 GHz share their band with weather and military radar. A router that detects radar must vacate the channel, so the link can drop for a moment or move on its own.
Nearby channels
5 GHz band
How to read this
- On 2.4 GHz the centre is 2407 + number × 5; only channel 14 breaks the rule at 2484.
- 5 GHz is 5000 + number × 5, and 6 GHz is 5950 + number × 5.
- A 2.4 GHz signal occupies 22 MHz, so channels must sit five apart to clear each other.
- Bonding to 40 MHz uses two neighbouring channels, leaving fewer places to hide.
Which channels are legal depends on the country. 12 and 13 are allowed in Korea, Europe and Japan but not in the US; 14 is Japan-only and legacy-only; and 6 GHz is still closed in some countries.
Frequently asked questions
Q. What frequency is channel 108?
It centres on 5540 MHz and occupies 5530–5550 MHz.
Q. Which channels does it overlap?
None in the same band.
Q. What does it bond with at 40 MHz?
Channel 112, making a 40 MHz pair.
Q. Anything that limits its use?
It falls under radar avoidance (DFS): the router must leave the channel when radar appears.