![]() ![]() One disadvantage is to have the client not beeing able to reach the AP and it has been discussed many times, but it was by thinking that phones and tablets can transmit at 15 dBm at most, but it seems it is not according to the previous web and others. Green arrows (mid gray in print version) denote minimum. (C) Maximum transmit power limited by specific absorption rate (SAR) and maximum receivable power at the implanted ENIAC, as a function of distance of air gap between the transmitter and the scalp, optimum around 5 mm. But on the other hand it sounds too much transmit power according to me.ĪPs' high transmit power has many disadvantages (high CCI, sticky clients, bad roaming and so on). The optimal frequency for wireless power transfer is around 190 MHz. Taking this into account, it makes sense on one hand to configure the APs to transmit at around 20 dBm. Take two examples: if you filter for Samsung they are around 18 dBm, if you filter for iPhone they are around 21 dBm. The maximum transmit power level of an NB-IoT device is either 20 or 23dBm in Release 13. In today's Ekahau webinar, they browsed the web where you can find the maximum transmit power of many vendor devices. The client we were testing also moved to a 5 Ghz frequency. It may also be measured in mW and a numerical figure that you can modify to be higher or lower. The initial throughput on our client when active on a 2.4 Ghz frequency was around 30 Mbps, as shown here: When we lowered power on our 2.4 GHz channels, we observed more clients connecting to our 5 GHz channel. However, you may also find yourself simply with Low, Medium or High. So the APs transmit power should be equal or less of the least powerful client for a proper design. Typically, it is a measure that you can adjust and goes from 0 to 100. Now you may be thinking 'great my wireless is going to transmit further' Unfortunately, its not quite that simple as the wavelength of 5GHz is roughly half that of 2.4GHz meaning you need to transmit at twice the power to get the same distance. ![]() However, there are good reasons to turn down the transmit power to a fraction of the maximum. The maximum output power is 200mW which is double the allowed output power of 2.4GHz. In the settings I set the value on custom and 16dBm. When I check my AirStats I see for my 5Ghz a transmit power of 16dBm and 20dBm (EIRP). This gives maximum coverage and users see a good signal ('full bars'). by gazzerX Transmit Power and recommandation Hey folks, I'm trying to optimize my Unifi Wifi. For United States, the transmit power can be 100. By default almost all WiFi access points transmit at full power (100mW on 2.4GHz). I have heard and read many times (and I also agree) that the AP's transmit power shouldn't be so high, since clients such as tablets and phones have little transmit power (according to some Cisco paper around 10 dBm). The maximum transmit power is limited by the CE/FCC regulation and the laws of your own country. ![]()
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