Subj : Re: Works here but not th
To   : Barry Martin
From : Ky Moffet
Date : Sat Sep 18 2021 21:50:00

BARRY MARTIN wrote:
>   KM> Some with external antennas, which might be helpful.
> 
> External antennae can be positioned (rotated) to better receive the
> signal.  Did have a thought: any problems with the weight on the USB
> port?  Thinking mechanical droop causing stress on the connection.

The ones I have don't weigh enough to matter -- less torque on the port 
than an ordinary dangling USB cable.

> And from earlier: "And I should look up to see what position
> the four antennae on my access point should be."  Not really an 'access
> point'; they call it a 'router', which is more what I think of as the
> first device in the chain, (I'm starting to like the semi-vague
> 'gateway' term Qwest/CenturyLink used when I had DSL here!)

The thingee that makes signal go from there to here!!

> Anyway, didn't see anything when scanning through the various manuals;
> nothing easily found on the Linksys site either.  Finally found a
> reference to a video where it said to rotate the two rear antennae
> outward 45ø for a multistory building.  That increase the signal
> strength to the MythTV RPi4 I referred to a percent; angling the front
> antennae 45ø added another percent.  Not all that significant but a very
> slight improvement.  Probably doesn't help the Pi is tucked behind the
> TV so the televsion probably provides a bit of shielding if not RF
> noise.

Maybe a LOT of shielding. I'd move it somewhere less sheltered. Wave it 
around and see what works!

> 
> Did not experiment with the original Pi which 'refused' to connect and
> stated this thread: minimal signal increase per the MythTV Pi doesn't
> hold much promise, plus the whole reason for that Pi was monitoring the
> backyard and currently the camera I have doesn't work with low light
> conditions (0.1 Lux, either need 0.01Lux and/or IR added).

I have no idea... tho the notion of something cheap like a Pi as a barn 
monitor is appealing. Have an old cell phone that can connect from out 
there, dunno what Pi-Fi could do.

>   KM> I've had better luck with the very cheapest ones, and with
>   KM> 802.11n rather than with 802.11ac -- the latter will hog the
>   KM> entire connection for internet, but don't seem to have quite the
>   KM> speed or the range on the local network. Still, might be try
>   KM> whatever is cheap and handy...
>   
> Did some reading:
>         802.11ac     uses the 5 GHz band
>         802.11n      uses the 5 GHz and 2.4 GHz bands
>               
>         Higher band is faster
>         Lower band has greater distance
>         
>         Lower band is also more crowded
>         
> So yes, seems the 'n' is the better choice as has more options,

Better choice if you need range, anyway.

> especially if travelling and some places with public WiFi (or even when
> visiting friends) may not have updated their hardware and only offering
> the 2.4 GHz band.  Here the RPi is connecting to my personal network but
> if I take the laptop somewhere bioth bands seems to be the better
> choice.

My understanding is they use whatever is the most modern provided it's 
available, but will downshift if it's not. Might be a way to set it??
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