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I was not satisfied with the answers so I suggest a blog post from a cable seller here. He says, that 75 Ohm Cable should work for most types of transmission because it has the lowest attenuation. In this Wikipedia Article it says that it also depends on length of the cable. The answers here say it's probably ok and in some cases better, and here it says it'...


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There are two classes of beamformer. One type has the antenna configuration hard-coded into its mathematics, and attempts to construct geometrically beams towards wanted sources, and/or nulls towards unwanted sources. The other type uses general complex matrices to maximise SNRs of expected signals, and to the extent that it 'beamforms', the positions of the ...


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Do beam-forming devices expect a particular antenna configuration? Well, they need to be designed to work with the particular antenna configuration you have. But that constellation doesn't inherently have to be a particular one. Sure, some shapes might be advantegous for specific directions, but you'll find beamformer arrays in all kinds of arrangements; ...


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Yes, it will be important to keep all antenna extensions equivalent to ensure the propagation delays are equal. You will want to keep any changes equivalent to each antenna to minimise efficiency loss. It’s probably best to keep the spacing the same, if you do increase the spacing, it's probably best to increase it between all the antennas. I have done this ...


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The other answer has addressed the possibility from the regulatory point of view, where the FCC in the US, and other such regulatory organizations in other countries, might impose certain requirements on what is allowable for communications in unlicensed bands like the 5.8 GHz bands. In theory, then, there is no regulation of usage to just those 5 pre-...


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Pin 3 EN needs to be pulled to VCC for the module to boot as far as I know, other than that I think it's good. https://components101.com/wireless/esp12e-pinout-datasheet#:~:text=ESP%2D12E%20is%20a%20miniature,connection%20for%20microcontroller%20or%20processor.&text=It%20features%20ability%20to%20embed,function%20as%20a%20standalone%20application.


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WiFi channel 0 and channel 4 overlap slightly so interference is theoretically possible. Channel 1, 6 and 11 are the only channel that can be used interference free from one another (you can look at this picture from Wikipedia). That said, there are many other possible causes of interference e.g. Bluetooth, Microwaves usw. or the AP might just be to far away....


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