[TriLUG] WiFi quality monitoring

[John Mitchell]

   There is one anomaly that I see in the discussion so far.
I would like to see you turn down the transmit power of the Router.
1) easy to do.
2) easy to revert back.

Reason - the Router is set to a High power level and the closeness of the
laptop (5').
(you also have Antennas boosting the signal)

For the sake of a 'test' you could try this. I realize that othe clients of
the WiFi signal may not work correctly during this test but it would be a
test.

john mitchell


On Thu, Aug 14, 2014 at 6:09 PM, Igor Partola <igor at igorpartola.com> wrote:

> Sorry, need to clarify some things as the terminology here is getting
> unfamiliar for me:
>
> > If it's an intermod problem, it's overloading the receiver, putting it
> into non-linear operation. I expect that you'll need 10mV or so (not sure)
> of received signal to do this. Changing your transmitter isn't going to
> affect this.
>
> So my laptop is overloading the router's Wi-Fi module by transmitting to
> it? Or an external non-Wi-Fi signal is overloading the router's Wi-Fi
> module? Or do I have that backwards? And the 10 mV of received signal is
> going to put the router into overload? What's a typical voltage when
> receiving the signal? Should I try putting the original antennas back on to
> see if the problem goes away?
>
> As for hams in the area, I honestly don't know if there are any. This
> neighborhood could certainly contain some. There is also a rock quarry and
> a few construction trucks in the area doing work on people's houses so I
> wouldn't be surprised if they used walkie-talkies or CB radios. I am pretty
> high up on a hill as well so I could be catching some other type of RF
> signal. In my ideal world I'd love to grab a spectrum analyzer and see
> what's going on over time, but unfortunately that would be an expensive
> attempt.
>
> Don't see any yagi's around, but the area is pretty wooded so I cannot see
> much at all. The house was built 16 years ago and has wood siding. I cannot
> say what kind of insulation it has under the siding. The router sits in a
> corner where both walls are outside walls.
>
> Thanks again!
> Igor
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