Subj : Re: More on wifi range - Pi PICO W Oil level sensor
To   : All
From : The Natural Philosopher
Date : Wed Dec 10 2025 11:33:33

On 10/12/2025 10:36, c186282 wrote:
> On 12/10/25 04:55, The Natural Philosopher wrote:
>> On 10/12/2025 05:27, c186282 wrote:
>> ˙˙ nastiness.
>>>
>>> ˙˙ Easiest ... add one wifi extender, log into
>>> ˙˙ the camera, see whether you get more bars
>>> ˙˙ with the main or the extender.
>>>
>>
>> Actually something that might be of interest...
>>
>> # iwlist wlan0 scanning | grep -e Cell -e Channel -e Quality -e 
>> Encrypt -e ESSID
>>
>> Shows all stations visible to a ZeroW˙ ... run it as root...
>>
>> ˙˙˙˙˙˙˙˙˙ Cell 01 - Address: 00:1D:AA:79:78:40
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:7
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.442 GHz (Channel 7)
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=44/70˙ Signal level=-66 dBm
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"Wifi1"
>> ˙˙˙˙˙˙˙˙˙˙ Cell 02 - Address: 30:46:9A:A2:89:F6
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:13
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.472 GHz (Channel 13)
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=51/70˙ Signal level=-59 dBm
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"wifi2"
>> ˙˙˙˙˙˙˙˙˙˙ Cell 03 - Address: 74:4D:28:4A:21:86
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:3
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.422 GHz (Channel 3)
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=35/70˙ Signal level=-75 dBm
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>> ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"wifi3"
>> etc etc.
> 
>  ˙ Interesting.
> 
>  ˙ DOES show a number of "cells" ... but not the ESSID of
>  ˙ my extender for some reason.
> 
That may be spoofing someone elses...
Try' iwlist wlan0 scanning' on its own

  Ther is a lot more info


>  ˙ In theory, this sort of data could be used by a
>  ˙ relatively simple daemon to switch back and
>  ˙ forth to the 'best' signal. The old CL stuff
>  ˙ is fine ... but can sometimes be replaced by
>  ˙ half a dozen lines of more-comprehensible Python.
> 
Its called 'network manager' but its not very good.


> 
> 
> 

-- 
?Progress is precisely that which rules and regulations did not foresee,?

  ? Ludwig von Mises


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