Subj : Re: More on wifi range - Pi PICO W Oil level sensor
To   : All
From : The Natural Philosopher
Date : Wed Dec 10 2025 09:47:55

On 10/12/2025 02:19, c186282 wrote:
> If monitoring 'emergency vehicles/installations'
>  ˙ is critical, maybe consider something using lower
>  ˙ frequencies than wi-fi ??? In USA I think there's
>  ˙ a designated comm space in the 400mhz band. It'd
>  ˙ still be good enough for a 1-fps camera feed.
> 
465Mhz.
Its equally shit really.
I ought to resurrect 27MHz.. that is still free-ish

>  ˙ Ah ... POTENTIAL cheap solution. Haven't fooled
>  ˙ with it in about 10 years but I think it's still
>  ˙ possible with Linux. Just buy one of those wi-fi
>  ˙ extender/repeater thingies (about $50 USD) and
>  ˙ put it not far from the main router. Make it
>  ˙ wlan1. At least with wpasupplicant and dhcpcd.conf
>  ˙ you could designate an automatic "fall over" in
>  ˙ case the main signal got crappy. Not 100% sure
>  ˙ what happens now with apps if you list a wlan0 and
>  ˙ wlan1 at the same time - will the app just use
>  ˙ whichever, or both, without complaints ???
> 
Depends how they are set up.

>  ˙ Between the two, 'shadow' areas ought to largely
>  ˙ go away.
> 
>  ˙ Pity nobody makes a 5ghz "viewer" so you can
>  ˙ get at least a fuzzy picture of the signal at
>  ˙ different places˙ ?
> 
Well they do. Its called a smart phone.

If te phone has 5Ghz wifi then a wifi sniffer app shows all.

>  ˙ I have a repeater to reach an out-building. Gonna
>  ˙ try to add it as wlan1 just to see what happens ...

-- 
"First, find out who are the people you can not criticise. They are your 
oppressors."
      - George Orwell


--- PyGate Linux v1.5.2
 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

.