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Where are you getting that information from ? My outdoor Wifi CPE has maximum Tx Power of 23dBm which is about 200mW, which gives me signal strenght of -65dBm and my internet tower is approx 6Km far.

I think you have typo on the decimal points on the watts.

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I based it on this table: https://w.wol.ph/2015/08/28/maximum-wifi-transmission-power-...

2.4 ghz tends to be 200mW, and 5ghz max tends to be 4000mW. I wanted to be as pessimistic as possible to still make my point.

Although with stuff like 4x4 MU-MIMO routers or dual network routers with one for 2.4ghz and for 5ghz, you could say it's 4 radios at once = 16W max. Radiation per inch of 4x4W power sources is different than one 16W source, so it's not 1:1.

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