Does dB loss occur enabling UNII-2 channels

[thefilmguy]

I am trying to refresh my memory here but is there any power loss enabling UNII-2 channels (20Mhz) on 5Ghz with the 3802i access points?

[Rasika Nayanajith]

Refer this file for detailed power & channel setting applicable to each regulatory domain

HTH

Rasika

[JPavonM]

@Rasika Nayanajith excellent reference file. Do you have any information about such file for newest Catalyst 9100 APs? This is very hard to find even using Google advanced search functions.

[JPavonM]

I'd answer my own question.

These are the reference guides for newest Catalyst APs with power settings and channels per domain:

https://www.cisco.com/c/en/us/support/wireless/catalyst-9100ax-access-points/products-installation-guides-list.html

HTH

Jesús

[thefilmguy]

Thanks but this doesn't actually answer my question. Let me rephrase, does enabling UNII-2 channels have any impact on UNII-1 / 3 existing transmit power? 

[Scott Fella · Accepted solution]

No it doesn’t. The regulatory bodies for countries define the max db for given channels/bands. The only difference you would see is from aps installed in different countries. That doesn’t mean that enabling a uni band and or channels affect other bands.

[thefilmguy]

Thank you. I had heard from someone else it would but I think they were confusing the concept that UNII-2 channels have different dB max values. Thanks Scott

[Scott Fella]

You can find the information on many wireless vendor websites. Again, each regulatory body defines what channel and power is allowed for both indoor and outdoor.