OT Routers

Allen Drake wrote:
On Sun, 09 Sep 2012 07:31:17 -0400, Paul wrote:

Allen Drake wrote:
On Sat, 08 Sep 2012 12:42:54 -0500, Paul in Houston TX
wrote:

s|b wrote:
On Sat, 08 Sep 2012 10:22:29 -0500, Paul in Houston TX wrote:

http://www.dslreports.com/faq/wisp/3...er_legal_stuff

Power is much the same.
Antennas make the difference.
Tnx for the interesting website. I noticed this:

| 5.150-5.250GHz Indoor 50mW (17dBm)

I have a Linksys (Cisco) E2000. No antennas, but I flashed the firmware
with DD-WRT. This enabled me to change the default setting (71mW) to
100mW. As a result, the signal was a lot stronger/better.

I could increase it /more/, but that would not be without risk. The
stronger the signal, the hotter the router. (100mW should cause no
problems.)
Yea. I am going to install a 1" micro fan in mine.
Don't know how many amps those things take though.
May have to get a bigger power supply.
I will try to keep the rf output so that it does
not reach the street, or next door.
That's an interesting goal because I see many signals from my top
floor and can select many that have no encryption. How would you
prevent this other than shielding you house? (thoughts of tin foil)

There's supposed to be a paint that can attenuate RF. So you could paint walls
and ceiling if you wanted. But, it would be super-expensive to do something
like that. The paint is priced for business users, not for home owners.

http://www.wireless-nets.com/resourc...shielding.html

You can also make Faraday cages, with this kind of mesh. But again, nobody
could afford to put this stuff completely around the exterior walls of
a house. It wouldn't be practical. The mesh wouldn't hold up well to
the elements either, so would have to be "under cover" to last for
any period of time.

http://preparednesspro.files.wordpre...h-close-up.jpg

Paul

Yes but would it keep aliens away and block those black helicopters?

There are no black heli..... No carrier

--
Tciao for Now!

John.

John Williamson wrote:
Allen Drake wrote:
On Sun, 09 Sep 2012 07:31:17 -0400, Paul wrote:

Allen Drake wrote:
On Sat, 08 Sep 2012 12:42:54 -0500, Paul in Houston TX
wrote:

s|b wrote:
On Sat, 08 Sep 2012 10:22:29 -0500, Paul in Houston TX wrote:

http://www.dslreports.com/faq/wisp/3...er_legal_stuff

Power is much the same.
Antennas make the difference.
Tnx for the interesting website. I noticed this:

| 5.150-5.250GHz Indoor 50mW (17dBm)

I have a Linksys (Cisco) E2000. No antennas, but I flashed the
firmware
with DD-WRT. This enabled me to change the default setting (71mW) to
100mW. As a result, the signal was a lot stronger/better.

I could increase it /more/, but that would not be without risk. The
stronger the signal, the hotter the router. (100mW should cause no
problems.)
Yea. I am going to install a 1" micro fan in mine.
Don't know how many amps those things take though.
May have to get a bigger power supply.
I will try to keep the rf output so that it does
not reach the street, or next door.
That's an interesting goal because I see many signals from my top
floor and can select many that have no encryption. How would you
prevent this other than shielding you house? (thoughts of tin foil)

There's supposed to be a paint that can attenuate RF. So you could
paint walls
and ceiling if you wanted. But, it would be super-expensive to do
something
like that. The paint is priced for business users, not for home owners.

http://www.wireless-nets.com/resourc...shielding.html

You can also make Faraday cages, with this kind of mesh. But again,
nobody
could afford to put this stuff completely around the exterior walls of
a house. It wouldn't be practical. The mesh wouldn't hold up well to
the elements either, so would have to be "under cover" to last for
any period of time.

http://preparednesspro.files.wordpre...h-close-up.jpg


Paul

Yes but would it keep aliens away and block those black helicopters?

There are no black heli..... No carrier


Hey, don't laugh. There are people making a fortune off
the Tinfoil Hat idea.

http://www.lessemf.com/personal.html

Paul

On Sun, 09 Sep 2012 19:12:53 -0400, Paul wrote:

John Williamson wrote:
Allen Drake wrote:
On Sun, 09 Sep 2012 07:31:17 -0400, Paul wrote:

Allen Drake wrote:
On Sat, 08 Sep 2012 12:42:54 -0500, Paul in Houston TX
wrote:

s|b wrote:
On Sat, 08 Sep 2012 10:22:29 -0500, Paul in Houston TX wrote:

http://www.dslreports.com/faq/wisp/3...er_legal_stuff

Power is much the same.
Antennas make the difference.
Tnx for the interesting website. I noticed this:

| 5.150-5.250GHz Indoor 50mW (17dBm)

I have a Linksys (Cisco) E2000. No antennas, but I flashed the
firmware
with DD-WRT. This enabled me to change the default setting (71mW) to
100mW. As a result, the signal was a lot stronger/better.

I could increase it /more/, but that would not be without risk. The
stronger the signal, the hotter the router. (100mW should cause no
problems.)
Yea. I am going to install a 1" micro fan in mine.
Don't know how many amps those things take though.
May have to get a bigger power supply.
I will try to keep the rf output so that it does
not reach the street, or next door.
That's an interesting goal because I see many signals from my top
floor and can select many that have no encryption. How would you
prevent this other than shielding you house? (thoughts of tin foil)

There's supposed to be a paint that can attenuate RF. So you could
paint walls
and ceiling if you wanted. But, it would be super-expensive to do
something
like that. The paint is priced for business users, not for home owners.

http://www.wireless-nets.com/resourc...shielding.html

You can also make Faraday cages, with this kind of mesh. But again,
nobody
could afford to put this stuff completely around the exterior walls of
a house. It wouldn't be practical. The mesh wouldn't hold up well to
the elements either, so would have to be "under cover" to last for
any period of time.

http://preparednesspro.files.wordpre...h-close-up.jpg


Paul

Yes but would it keep aliens away and block those black helicopters?

There are no black heli..... No carrier


Hey, don't laugh. There are people making a fortune off
the Tinfoil Hat idea.

http://www.lessemf.com/personal.html

Paul


http://zapatopi.net/afdb/

On 9/8/2012 11:25 AM, DanS wrote:
charlie wrote in
:

On 9/8/2012 12:31 AM, Big Steel wrote:
On 9/7/2012 9:31 PM, wrote:

Do all routers put out a signal that is equal in strength
or are some more powerful than others.

If you are talking about a wireless router, then I would
say that some can have more powerful signal strength. Some
wireless router you paid $20 for may have less of a range
than something you paid $1,020 for I would thing.

With wireless routers, the higher/elevation you can
position the router, the further the signal will travel.

http://www.microsoft.com/athome/setu...stips.aspx#fbi
d=IctjAdJrN8-

There also is a gotcha with antennas, particularly remote
ones. The connectors and cables used have a loss factor
that is significant. As a result all other variables
ignored, two "identical" units may have quite different
operating ranges.

As an RF engineering technician, I've never bought into
connectors themselves as a cause for loss. There *is* a small
amount of loss, but if the connector is assembled properly,
this is negligible, and never figured into any link budget.

Coax, yes, cheap, thin coax can cause large amounts of loss
over distances of more than a coulple feet.

Here's a good reference chart....

http://www.w4rp.com/ref/coax.html

The top chart shows typical losses for "standard" type coax.

The second chart shows typical losses of Times Microwave LMR
series (read "expensive") of coax.

The third chart includes 2.4Ghz and 5.8Ghz, since the two
table above don't go over 1Ghz and 1.5Ghz, respectively.















The "expensive" coax and connectors are good, but they are beyond the
price range for mass produced routers.
Some time ago, we measured various external antennas and connectors then
sold at retail for use with wireless routers. Perhaps the worst examples
were remote antennas intended to be used with P/C wireless LAN cards.
The cable and connector losses offset the rated antenna gain almost
completely.

My Ghz RF experience (before I retired) was mainly in development,
application, and lab testing of various military airborne "black boxes"
that covered about 2Ghz to above 20Ghz.

(Be nice, or all your microwave comm systems might suddenly not work,
and while we're at it, you can also forget your air surveillance and
missile guidance systems, and just maybe the instrument landing system
on your monarch's helipad.)

On Sun, 09 Sep 2012 13:19:14 +0100, choro wrote:

On 09/09/2012 12:44, John Williamson wrote:
Paul wrote:
Allen Drake wrote:
On Sat, 08 Sep 2012 12:42:54 -0500, Paul in Houston TX
wrote:

s|b wrote:
On Sat, 08 Sep 2012 10:22:29 -0500, Paul in Houston TX wrote:

http://www.dslreports.com/faq/wisp/3...er_legal_stuff

Power is much the same.
Antennas make the difference.
Tnx for the interesting website. I noticed this:

| 5.150-5.250GHz Indoor 50mW (17dBm)

I have a Linksys (Cisco) E2000. No antennas, but I flashed the
firmware
with DD-WRT. This enabled me to change the default setting (71mW) to
100mW. As a result, the signal was a lot stronger/better.

I could increase it /more/, but that would not be without risk. The
stronger the signal, the hotter the router. (100mW should cause no
problems.)
Yea. I am going to install a 1" micro fan in mine.
Don't know how many amps those things take though.
May have to get a bigger power supply.
I will try to keep the rf output so that it does
not reach the street, or next door.

That's an interesting goal because I see many signals from my top
floor and can select many that have no encryption. How would you
prevent this other than shielding you house? (thoughts of tin foil)


There's supposed to be a paint that can attenuate RF. So you could
paint walls
and ceiling if you wanted. But, it would be super-expensive to do
something
like that. The paint is priced for business users, not for home owners.

http://www.wireless-nets.com/resourc...shielding.html

You can also make Faraday cages, with this kind of mesh. But again,
nobody
could afford to put this stuff completely around the exterior walls of
a house. It wouldn't be practical. The mesh wouldn't hold up well to
the elements either, so would have to be "under cover" to last for
any period of time.

http://preparednesspro.files.wordpre...h-close-up.jpg

If you're redecorating anyway, you could try dry lining all the external
walls with foil backed plasterboard and bonding the individual sheets to
each other and ground. Add the metallic reflective foil to your windows,
too. You get the added benefit of a slight saving in heating and cooling
costs but while it's not a complete rf shield, a couple of walls of it
can certainly block any useful signal, as a lot of people with modern
houses have found and complained about on uk.d-i-y

*Ciao* for Now!

John.

Have you all gone bonkers, or what?!

Me corrected your DICKtation from *Tciao* to *Ciao*.

Adios!

John & I discussed the spelling of ciao a long time ago. He said that he
prefers his way, so I graciously[1] yielded.

[1] Or so I claim :-)

--
Gene E. Bloch (Stumbling Bloch)

On Sun, 09 Sep 2012 19:12:53 -0400, Paul wrote:


http://preparednesspro.files.wordpre...h-close-up.jpg


Paul

Yes but would it keep aliens away and block those black helicopters?

There are no black heli..... No carrier


Hey, don't laugh. There are people making a fortune off
the Tinfoil Hat idea.

http://www.lessemf.com/personal.html

I notice they have a BlocBag but no StumblinBag.

I will have to watch the site for further developments.

--
Gene E. Bloch (Stumbling Bloch)