Joe,
I think you are experiencing high voltage switching transients from the high
power loads in the building raising the potential of your earth (ground)
connection. This a common problem affecting electronic equipment in
industrial process plant environments with heavy machinery and buildings
with lots of HVAC equipment starting up and shutting down. In the electronic
security industry we often get equipment blown up because of bad earth
(ground) connections. Never trust the grounding of electrical conduits,
there are numerous reasons why these can be badly earthed at the point where
you make your connnection. Try grounding to a copper cold water pipe as
close as possible to the point where it enters the ground, or drive your own
copper-clad steel stake at least 2 feet into the ground and clamp your earth
wire to that. This probably means a lot of extra work running your antenna
ground but it is the only real solution.
You might also try using a switch mode power supply instead of a simple 12
volt regulator and make sure that your POE cable is separated from any
electrical cables by at least 300 mm (12 inches) along its entire length.
Bob Shumack
SecurityNet Australia(bshumack@security.net.au
<mailto:(bshumack@security.net.au> )
http://www.security.net.au
T: +612 9521 2025
M: +61 419 462 352
This message and its attachments may contain legally privileged or
confidential information. It is intended solely for the named addressee. If
you are not the addressee indicated in this message (or responsible for
delivery of the message to the addressee), you may not copy or deliver this
message or its attachments to anyone. Rather, you should permanently delete
this message and its attachments and kindly notify the sender by reply
email. No warranty is made that the email or attachment(s) are free from
computer virus or other defect.
_____
-----Original Message-----
From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com]On Behalf Of
karlnet-request@WISPNotes.com
Sent: Friday, 30 July 2004 5:12 AM
To: karlnet@WISPNotes.com
Subject: Karlnet Digest, Vol 19, Issue 39
Send Karlnet mailing list submissions to
karlnet@WISPNotes.com
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.wispnotes.com/mailman/listinfo/karlnet
or, via email, send a message with subject or body 'help' to
karlnet-request@WISPNotes.com
You can reach the person managing the list at
karlnet-owner@WISPNotes.com
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Karlnet digest..."
Today's Topics:
1. Re: repeted Radio failure. (Caleb Carroll)
2. Re: [work] [Karlnet] 5 Minute Total Loss of Traffic on KN-205
and AP1000 (Intercom - Roberto Ravetti)
3. Re: repeted Radio failure. (Chris Conn)
4. Re: repeted Radio failure. (joe@rockymountains.net)
5. Re: repeted Radio failure. (joe@rockymountains.net)
6. Re: repeted Radio failure. (joe@rockymountains.net)
7. RE: repeted Radio failure. (Alex Phillips)
----------------------------------------------------------------------
Message: 1
Date: Thu, 29 Jul 2004 10:07:30 -0600
From: "Caleb Carroll" <karlnet@pathcom.ca>
Subject: Re: [Karlnet] repeted Radio failure.
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Message-ID: <200407291007300718.239F2A2A@mail.pathcom.ca>
Content-Type: text/plain; charset="ISO-8859-1"
Is it just the radio card that is dieing or the whole KN-105. Also, are
you using shielded or standard Cat-5 cable and what length?
*********** REPLY SEPARATOR ***********
On 2004-07-29 at 9:20 AM joe wrote:
>I have a location that seems to destroy radios. I'm using KN-105 w/PoE
>and
>a 12v regulator in an integrated 19 dBi antenna and SMC 200mw radio(have
>also tried Ecomm's 200mw). The antenna is mounted on a composite shingled
>roof and is grounded to the incoming power conduits for the building. The
>company uses large amounts of power, I see a gauge on the power panel that
>continuously reads in excess of 250A (440V). There has been some
>lightening
>in the area, but this location seems to toast radios even when there is no
>lightening. Recently every other day.
>
>Anyone have experience/suggestions with/for this sort of problem?
>
>Joseph Conrad
>Mountain Computer Wizards, Inc.
>
>
>_______________________________________________
>Karlnet mailing list
>Karlnet@WISPNotes.com
>http://lists.wispnotes.com/mailman/listinfo/karlnet
------------------------------
Message: 2
Date: Thu, 29 Jul 2004 13:12:07 -0300
From: "Intercom - Roberto Ravetti" <rravetti@itc.com.ar>
Subject: Re: [work] [Karlnet] 5 Minute Total Loss of Traffic on KN-205
and AP1000
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Message-ID: <086201c47586$cbdde180$0232a8c0@internetxaire.com.ar>
Content-Type: text/plain; charset="iso-8859-1"
Hi:
I begin to see this problems in the last weeks with my AP1000 Base and I saw
this problem in the list in May.
I know that I have a lot of traffic and clients in the Base, but I want to
know if there was some solution, binary upgrade or really suggestion for
this problem..
Thanks all.
Bye
Atentamente,
------------------------------------
Roberto Ravetti
Intercom S.R.L
Gerente de Servicios
mailto: rravetti@itc.com.ar
http://www.intercomwireless.com
Te: (54) 3571 427 777
Rio Tercero - Cordoba - Argentina
------------------------------------
------------------------------
Message: 3
Date: Thu, 29 Jul 2004 12:51:00 -0400
From: Chris Conn <cconn@abacom.com>
Subject: Re: [Karlnet] repeted Radio failure.
To: Karlnet Mailing List <karlnet@WISPNotes.com>
Message-ID: <41092AF4.4050405@abacom.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
joe wrote:
> I have a location that seems to destroy radios. I'm using KN-105 w/PoE
and
> a 12v regulator in an integrated 19 dBi antenna and SMC 200mw radio(have
> also tried Ecomm's 200mw). The antenna is mounted on a composite shingled
> roof and is grounded to the incoming power conduits for the building. The
> company uses large amounts of power, I see a gauge on the power panel that
> continuously reads in excess of 250A (440V). There has been some
lightening
> in the area, but this location seems to toast radios even when there is no
> lightening. Recently every other day.
>
> Anyone have experience/suggestions with/for this sort of problem?
>
> Joseph Conrad
> Mountain Computer Wizards, Inc.
We have had problems similar to this where the radio performance (ie
signal) would degrade to very low levels, even under 30mW. We seem to
have solved this problem by using a 24VDC supply. We suspect that the
long run of ethernet cable (maybe around 150 feet) was causing this. We
have damaged 3 200mW radios in this manner. However they would still
function, only very attenuated signal. How long is your ethernet?
Chris
------------------------------
Message: 4
Date: Thu, 29 Jul 2004 11:45:11 -0600
From: <joe@rockymountains.net>
Subject: Re: [Karlnet] repeted Radio failure.
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Message-ID: <001201c47593$cd55a180$c400000a@work1>
Content-Type: text/plain; charset="iso-8859-1"
It is just the radio, when I get it back to the shop and connected to a very
nearby AP, it will recieve but not transmit. We are using outdoor UTP and
running a seperate 14 Ga. solid copper ground.
Joe
----- Original Message -----
From: "Caleb Carroll" <karlnet@pathcom.ca>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Thursday, July 29, 2004 10:07 AM
Subject: Re: [Karlnet] repeted Radio failure.
Is it just the radio card that is dieing or the whole KN-105. Also, are
you using shielded or standard Cat-5 cable and what length?
*********** REPLY SEPARATOR ***********
On 2004-07-29 at 9:20 AM joe wrote:
>I have a location that seems to destroy radios. I'm using KN-105 w/PoE
>and
>a 12v regulator in an integrated 19 dBi antenna and SMC 200mw radio(have
>also tried Ecomm's 200mw). The antenna is mounted on a composite shingled
>roof and is grounded to the incoming power conduits for the building. The
>company uses large amounts of power, I see a gauge on the power panel that
>continuously reads in excess of 250A (440V). There has been some
>lightening
>in the area, but this location seems to toast radios even when there is no
>lightening. Recently every other day.
>
>Anyone have experience/suggestions with/for this sort of problem?
>
>Joseph Conrad
>Mountain Computer Wizards, Inc.
>
>
>_______________________________________________
>Karlnet mailing list
>Karlnet@WISPNotes.com
>http://lists.wispnotes.com/mailman/listinfo/karlnet
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
------------------------------
Message: 5
Date: Thu, 29 Jul 2004 11:53:59 -0600
From: <joe@rockymountains.net>
Subject: Re: [Karlnet] repeted Radio failure.
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Message-ID: <001901c47595$088187a0$c400000a@work1>
Content-Type: text/plain; charset="iso-8859-1"
I am using a 24v (BreezeComm PI-CAT5 dual) PoE injector/regulator that
delivers 24V at the antenna which is then regulated to 12V and put in the
power connector on the KN-100. The run is outdoor UTP about 25 Ft. There
is a 14 Ga. solid copper ground.
Is the performace degradation that you have seen on the TX only?
Joe
----- Original Message -----
From: "Chris Conn" <cconn@abacom.com>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Thursday, July 29, 2004 10:51 AM
Subject: Re: [Karlnet] repeted Radio failure.
> joe wrote:
> > I have a location that seems to destroy radios. I'm using KN-105 w/PoE
and
> > a 12v regulator in an integrated 19 dBi antenna and SMC 200mw radio(have
> > also tried Ecomm's 200mw). The antenna is mounted on a composite
shingled
> > roof and is grounded to the incoming power conduits for the building.
The
> > company uses large amounts of power, I see a gauge on the power panel
that
> > continuously reads in excess of 250A (440V). There has been some
lightening
> > in the area, but this location seems to toast radios even when there is
no
> > lightening. Recently every other day.
> >
> > Anyone have experience/suggestions with/for this sort of problem?
> >
> > Joseph Conrad
> > Mountain Computer Wizards, Inc.
>
>
> We have had problems similar to this where the radio performance (ie
> signal) would degrade to very low levels, even under 30mW. We seem to
> have solved this problem by using a 24VDC supply. We suspect that the
> long run of ethernet cable (maybe around 150 feet) was causing this. We
> have damaged 3 200mW radios in this manner. However they would still
> function, only very attenuated signal. How long is your ethernet?
>
> Chris
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
> http://lists.wispnotes.com/mailman/listinfo/karlnet
>
------------------------------
Message: 6
Date: Thu, 29 Jul 2004 11:56:06 -0600
From: <joe@rockymountains.net>
Subject: Re: [Karlnet] repeted Radio failure.
To: "Fernando Benaiter - Micromatix" <fernando@micromatix.com.br>,
"Karlnet Mailing List" <karlnet@WISPNotes.com>
Message-ID: <001f01c47595$52e2f900$c400000a@work1>
Content-Type: text/plain; charset="iso-8859-1"
I use Lucent Orinoco Gold Classic on all links that I can, unfortunatyl this
link is too far and we have used the 200mw to "power" through the distance.
Joe
----- Original Message -----
From: "Fernando Benaiter - Micromatix" <fernando@micromatix.com.br>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Thursday, July 29, 2004 9:34 AM
Subject: Re: [Karlnet] repeted Radio failure.
> I agree. Lately we are having many problems using 200mW SMC cards
> (SMC-2532W-B). The signal measurement looks good and the ping (without
> traffic) comes with 0% of packet loss. However, when the traffic comes,
the
> link begins to present a very high loss of packets.
>
> Fernando Benaiter
> Micromatix - Brazil
>
> ----- Original Message -----
> From: "Dan Metcalf" <dan.metcalf@wbsysnet.com>
> To: "'Karlnet Mailing List'" <karlnet@WISPNotes.com>
> Sent: Thursday, July 29, 2004 12:23 PM
> Subject: RE: [Karlnet] repeted Radio failure.
>
>
> Have you tried a lucent/agere radio? They tend to be very reliable
>
>
> > -----Original Message-----
> > From: karlnet-bounces@WISPNotes.com
> [mailto:karlnet-bounces@WISPNotes.com] On
> > Behalf Of joe
> > Sent: Thursday, July 29, 2004 11:21 AM
> > To: Karlnet Mailing List
> > Subject: [Karlnet] repeted Radio failure.
> >
> > I have a location that seems to destroy radios. I'm using KN-105
> w/PoE and
> > a 12v regulator in an integrated 19 dBi antenna and SMC 200mw
> radio(have
> > also tried Ecomm's 200mw). The antenna is mounted on a composite
> shingled
> > roof and is grounded to the incoming power conduits for the building.
> The
> > company uses large amounts of power, I see a gauge on the power panel
> that
> > continuously reads in excess of 250A (440V). There has been some
> lightening
> > in the area, but this location seems to toast radios even when there
> is no
> > lightening. Recently every other day.
> >
> > Anyone have experience/suggestions with/for this sort of problem?
> >
> > Joseph Conrad
> > Mountain Computer Wizards, Inc.
> >
> >
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/karlnet
> > --
> > [This E-mail scanned for viruses by Declude Virus]
> >
>
>
>
> --
> [This E-mail scanned for viruses by Declude Virus]
>
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
> http://lists.wispnotes.com/mailman/listinfo/karlnet
>
>
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
> http://lists.wispnotes.com/mailman/listinfo/karlnet
------------------------------
Message: 7
Date: Thu, 29 Jul 2004 15:11:21 -0400
From: "Alex Phillips" <alexp@rbns.net>
Subject: RE: [Karlnet] repeted Radio failure.
To: "'Karlnet Mailing List'" <karlnet@WISPNotes.com>
Message-ID: <003b01c4759f$d557afc0$0932050a@CPQ38667516304>
Content-Type: text/plain; charset="us-ascii"
Just put the 24vdc into the board. 12v is not enough. That is your
problem.
If you are also powering a fan in that box, then make your self a
Ethernet jig to pull the power off the Ethernet before it goes into the
PI-CAT5 power regulator and pull 24 off for the board and then use the
others for your fan or what ever.
-----Original Message-----
From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com] On Behalf Of
joe@rockymountains.net
Sent: Thursday, July 29, 2004 1:54 PM
To: Karlnet Mailing List
Subject: Re: [Karlnet] repeted Radio failure.
I am using a 24v (BreezeComm PI-CAT5 dual) PoE injector/regulator that
delivers 24V at the antenna which is then regulated to 12V and put in
the
power connector on the KN-100. The run is outdoor UTP about 25 Ft.
There
is a 14 Ga. solid copper ground.
Is the performace degradation that you have seen on the TX only?
Joe
----- Original Message -----
From: "Chris Conn" <cconn@abacom.com>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Thursday, July 29, 2004 10:51 AM
Subject: Re: [Karlnet] repeted Radio failure.
> joe wrote:
> > I have a location that seems to destroy radios. I'm using KN-105
w/PoE
and
> > a 12v regulator in an integrated 19 dBi antenna and SMC 200mw
radio(have
> > also tried Ecomm's 200mw). The antenna is mounted on a composite
shingled
> > roof and is grounded to the incoming power conduits for the
building.
The
> > company uses large amounts of power, I see a gauge on the power
panel
that
> > continuously reads in excess of 250A (440V). There has been some
lightening
> > in the area, but this location seems to toast radios even when there
is
no
> > lightening. Recently every other day.
> >
> > Anyone have experience/suggestions with/for this sort of problem?
> >
> > Joseph Conrad
> > Mountain Computer Wizards, Inc.
>
>
> We have had problems similar to this where the radio performance (ie
> signal) would degrade to very low levels, even under 30mW. We seem to
> have solved this problem by using a 24VDC supply. We suspect that the
> long run of ethernet cable (maybe around 150 feet) was causing this.
We
> have damaged 3 200mW radios in this manner. However they would still
> function, only very attenuated signal. How long is your ethernet?
>
> Chris
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
> http://lists.wispnotes.com/mailman/listinfo/karlnet
>
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
------------------------------
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
End of Karlnet Digest, Vol 19, Issue 39
***************************************
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
|