Digest for sci.electronics.repair@googlegroups.com - 11 updates in 1 topic

bitrex <bitrex@de.lete.earthlink.net>: Jun 12 08:02AM -0400

On 06/12/2017 08:00 AM, bitrex wrote:
>> OK, this has happened to three of these laptops so I will temporsrily
>> rule out a hardware failure
 
> Don't, WiFi cards/adapters fail or fail intermittently on the regular.
 
Should be "WiFi cards/routers", rather
Cursitor Doom <curd@notformail.com>: Jun 12 12:55PM

On Sun, 11 Jun 2017 21:24:39 -0700, Dave Platt wrote:
 
> Microwave ovens emit RF in the same ISM band that WiFi B/G use (2.4
> GHz). So do many other devices, including many cordless phones.
 
Microwave ovens knock my connection *clean* out, even if the oven is 3
times further away than the 'puter from the wireless router. The
screening they use in modern ovens is obviously not very effective.
Perhaps the OP has a new neighbour moved in with a uWave?
Cursitor Doom <curd@notformail.com>: Jun 12 12:58PM

On Mon, 12 Jun 2017 02:58:31 -0700, jurb6006 wrote:
 
> Not to forget I need like about 75 foot of it.
 
Always amazes me how they put xGhz through CAT5 over *long* runs with
negligible loss. But TX line theory was never my strong point and I
really should brush-up on it.
"pfjw@aol.com" <pfjw@aol.com>: Jun 12 07:16AM -0700

Our neighbors just installed one of the wire-free security systems in their house, after which WiFi on that end of the house ceased to work, full stop. For $22 from Amazon, we purchased a 'signal booster' that solved the problem quickly and easily. Our neighbors offered to pay for it, but we declined. They are very good neighbors, and we needed to do something anyway as the distance from one end of the house to the other is just under 60 feet. Add 11 feet floor-to-floor, and it adds up. Put another way, the west side of our house is closer to our neighbor than to our WiFi device.
 
But, it could be something as simple as that - a system nearby that is stepping on your network. And, that can be anything from a Roomba to a Nest thermostat - or one of the new wireless security systems.
 
Our very-vintage desktop is hard-wired and has no issues at all. The rest of the devices (cell phones, laptop and tablets) are WiFi, and fine, now, with the booster.
 
https://images-na.ssl-images-amazon.com/images/I/31GZ3ESs8ML._SL500_AC_SS350_.jpg
 
One of these.
 
Sometimes, one has to quit whining and get with the program.
 
Peter Wieck
Melrose Park, PA
Foxs Mercantile <jdangus@att.net>: Jun 12 09:18AM -0500

On 6/12/2017 7:58 AM, Cursitor Doom wrote:
> Always amazes me how they put xGhz through CAT5 over *long* runs
> with negligible loss. But TX line theory was never my strong
> point and I really should brush-up on it.
 
Cat5 doesn't work that well with 1000Base-T
Minimum requirement is Cat5e or better.
<http://www.cablek.com/technical-reference/cat-5---5e--6--6a---7--standards>
 
The "big thing" with the faster cables is the specified slightly
different "twists per inch" of the pairs to cut down on the amount
of cross talk between pairs.
 
More on twisted pair in general:
<https://en.wikipedia.org/wiki/Twisted_pair>
 
Information like this, however, is wasted on jurb6006 because he
already knows everything about everything. Until he doesn't. Then
his solution is to put a bullet in it, or blame the government.
 
 
 
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
 
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This email has been checked for viruses by AVG.
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"pfjw@aol.com" <pfjw@aol.com>: Jun 12 07:31AM -0700

On Monday, June 12, 2017 at 10:18:45 AM UTC-4, Foxs Mercantile wrote:
 
 
> Information like this, however, is wasted on jurb6006 because he
> already knows everything about everything. Until he doesn't. Then
> his solution is to put a bullet in it, or blame the government.
 
Mpffff... we just got back from a tour of Cuba (mostly Havana), and after experiencing "High Tech" there, such complaints as I see here are laughable. We got 'internet' in the morning from about 7:00 am to about 9:00 am, when the bandwidth was sucked up by 'official' uses such as government and schools. Downloading a single page took perhaps an hour, and uploading - well, forget it. Cell coverage (ATT/Verizon/T-Mobile) was excellent, however. But at $3 per minute for phone, and $0.50 per outgoing or incoming text. But, one could purchase a SIM Card for about $10 CUC to solve that. We left our devices on Airplane Mode and enjoyed the quiet.
 
Yes, we did ride in several 1950s Taxis. One, a Buick with a Mercedes drive-train, the other a Ford with a Mitsubishi drive-train (both diesel). And, the rum, of course.
 
Peter Wieck
Melrose Park, PA
Wond <gboot.phil@gmx.com>: Jun 12 02:44PM

On Sun, 11 Jun 2017 18:31:10 -0700, jurb6006 wrote:
 
> going bad, or it would have found the other ones in the neighborhood.
 
> I do not have a spectrum analyzer, but I do have an old YV woith a UHf
> band if that would help.
 
(snip)
I would try doing an RF search with NetStumbler software, or InSSIDer,
or both.
bitrex <bitrex@de.lete.earthlink.net>: Jun 12 11:01AM -0400

On 06/12/2017 10:18 AM, Foxs Mercantile wrote:
 
> Information like this, however, is wasted on jurb6006 because he
> already knows everything about everything. Until he doesn't. Then
> his solution is to put a bullet in it, or blame the government.
 
lol it's funny because it's' true
Foxs Mercantile <jdangus@att.net>: Jun 12 10:27AM -0500

On 6/12/2017 10:01 AM, bitrex wrote:
>> already knows everything about everything. Until he doesn't. Then
>> his solution is to put a bullet in it, or blame the government.
 
> lol it's funny because it's' true
 
Maybe he should just spray everything with WD-40.
 
 
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
 
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This email has been checked for viruses by AVG.
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bitrex <bitrex@de.lete.earthlink.net>: Jun 12 11:30AM -0400

On 06/12/2017 11:27 AM, Foxs Mercantile wrote:
>>> his solution is to put a bullet in it, or blame the government.
 
>> lol it's funny because it's' true
 
> Maybe he should just spray everything with WD-40.
 
Better yet, Sherwin Williams:
 
<https://pittsburghorbit.files.wordpress.com/2015/06/sherwin-williams-logo.png>
Jeff Liebermann <jeffl@cruzio.com>: Jun 12 09:16AM -0700

>up and it was quite possible there was a DSL filter in line
>with the MODEM. This would of course result in a low signal.
>But not RF. This is RF, I lose the whole network.
 
Are you allergic to supplying equipment makers names and model
numbers? It's really difficult to visualize your problem without that
information. Also, some routers have a reputationg for flaky
connections, such most everything Comcast calls a "gateway".
 
The DSL filter has nothing to do with the wi-fi connection.
 
>I might just pick me up some CAT5 cables and be done with it.
>Nobody but me is using the RF, so maybe just shut the shit off.
 
Whatever works for you.
 
>this point I need two of them. They are probably three times
>that much locally. Maybe I got some of that Yid blood because
>I really do not want to pay $30 for what I can get for $10.
 
You don't know the first thing about being a Jewish negotiator. Around
here CAT5e can be found by the roll at the recyclers. The building
installers dump their surplus stock after each job. Typical is about
$0.05 to $0.10 per foot. However, I have to be careful so that I
don't end up with plenum cable, waterproof cable filled with sticky
goo, or shielded which never seems to fit the connectors. Caveat
Emptor.
 
>Not to forget I need like about 75 foot of it.
 
Buy 100ft. Having extra cable is always better than too short.
Measure twice, cut once. In your case, maybe measure 5 times.
 
>This is not that much fun. The house has hardwood floors so any
>drilling is at the corners. I wish I was at MY house where I
>could just drop a drill wherever I damnwell please. Someone kill me.
 
Temporarily remove the baseboard trim near where you want the cable to
go through the floor. Drill as close to the wall as possible. Use a
drill that is much longer than you probably own so that you can go
through a floor joist if necessary. Notch the back of the baseboard
trim and run the cable up to a "muffin" jack (box with RJ45
receptacle). Replace baseboard trim.
 
>Maybe I just go back to wire.
 
There are also HomePlug adapters. Figure on about $80/pair.
<https://www.netgear.com/home/products/networking/powerline/>
I use these when I'm either desperate or lazy. They work but are a
problem if the wall jacks are on two different phases.
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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