![]() Also, confuses clients that think they can reach back the AP. I think in large highrises, like the one I am in, where dozens of people are within 400 feet of each other (the range of 802.11ac at the 100 mW defaul high power transmit setting), and all using their own WiFi router, it is probably better if eveyone uses their low power setting for a lot less channel interference and lower radiation overall. More transmit power is more prone to more interference in longer range. My concern is that the overlap areas were too strong in some places, but I wasnt sure how careful I needed to be about that, since there isnt any channel overlap or interference. I believe this is correct, especially since 10mW is plenty usable and I have used 1 mW fine in 1 bedroom apartments on routers where you can set the precise percentage of 100mW. So, Im not maxing out power anywhere, in fact I took it off the auto setting precisely because I was concerned that UniFi was defaulting to a very high transmit power. Ubiquiti Networks UAP-AC-PRO UniFi Access Point Enterprise Wi-Fi System. Make sure the general LAN network and firewall are not responsible for the session drops. ![]() Read all the unifi documents about wireless planning. On the other hand, mobile devices typically use 15 mW (12 dBm) to save power. For info Auto power on unifi just means full power. Effective Isotropic Radiated Power (EIRP) 100 mW (20 dBm) 2,4 GHz and 200 mW (23 dBm) 5 GHz. An iPhone today can crank out approx 18dBm - (Cisco finds that the typical max transmit power for most iOS devices fall in the range of 9 dBm to 14 dBm, depending on the model and AP Channel.) Also the UniFi has better recieve antennas - 3dBm gain so MED 2G is a match and is something you only want to use for long rang and slow Mbps. Airtime Availability In order for an 802.11 device to communicate, it must be able to transmit, i.e. I did some homework, please comment, if necessary: Many Wi-Fi base stations by default use full transmit power i.e. Let’s go through each of these step-by-step. ![]() As the log scale is exponental, the absolute power amounts decrease signficantly more: 20 dBm = 100 mW (100% = baseline), 15 dBm = 32 mw (32% of baseline), 10 dBm = 10 mw (10% of baseline), So the "Low" power preset on the transmit power setting is actually 10 times lower than high power. If fewer devices are given an opportunity to transmit in any given timeslot, overall capacity will be reduced. Yes, the percentages you supplied are accurate when applied to the non-linear log 10 based decibal scale: 20dBm (100%), 15 dBm (75%) , and 10 dBm (50%). ![]()
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