Subj : Re: More on wifi range - Pi PICO W Oil level sensor
To   : All
From : c186282
Date : Thu Dec 11 2025 09:30:01

On 12/10/25 04:47, The Natural Philosopher wrote:
> 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

   It can be good for some stuff, alas not IP
   cams and other higher-bandwidth devices.

   Hmmm ... maybe 300 Hz ? Goes everywhere !


>> ˙˙ 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.

   IMHO it barely matters ... if you have a router/AP
   then you can link extenders. Those can, cheaply,
   deal with certain blank spots in the wifi coverage.

>> ˙˙ 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.

   "Bars" ??? How CRUDE !  :-)

   I wanna SEE colors on the walls.

   Maybe next year.

   Hmm, just found an article about new quantum
   tech to finely analyze 5+ ghz comb signals.

> 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 ...

   DID add a wlan1 ... but, as was, not really useful.
   You could connect to one, or the other, but there's
   no inherent fail-over. Apparently there IS some
   software, and/or evil config/iptables, fixes ...
   but kinda icky.

   MIGHT be some bridging fixes less odious. Have to
   research that further.

   What we WANT is for a device connection to use
   the BEST signal - whether that's the primary
   router or an extender - and switch back and
   forth automatically depending on the connection
   quality. Looks like it CAN be done ... but ....


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

.