I believe the KN-50's only take up to 24v I could be wrong though.
----- Original Message -----
From: "Phillip Britt" <phil@team.wideband.net.au>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Monday, November 29, 2004 3:18 PM
Subject: RE: [Karlnet] Using Karnet in a -48v enviroment
We use using a Veritech (Saneo) card and it could be putting out a real
voltage as you say.
I have a couple of dead (but still powering on) KN-50's l thought l would
test with in the hope that they are similar to a kn-205 in the power
department.
-----Original Message-----
From: karlnet-bounces@WISPNotes.com [mailto:karlnet-bounces@WISPNotes.com]
On Behalf Of Bob Hrbek
Sent: Tuesday, 30 November 2004 8:11 AM
To: Karlnet Mailing List
Subject: Re: [Karlnet] Using Karnet in a -48v enviroment
Hmm, well...if it'll run off 48vDC, I'd switch the polarity to what it wants
and then test again. Although, I've dealt w/ rectifiers that had problems
when I connected the antenna cable to an orinoco card. There is actually
REAL voltage that comes out of that orinoco connector. You might have to be
extra creative on this one (though I'll have to leave the creativity up to
you).
-Bob
----- Original Message -----
From: "Phillip Britt" <phil@team.wideband.net.au>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Monday, November 29, 2004 3:09 PM
Subject: RE: [Karlnet] Using Karnet in a -48v enviroment
The KN-205 can take 48v through the POE only.
I am quite sure it did short off the grounded antenna lead.
Getting around the problem is the issue at the moment as l need to run
Karlnet on the site, and have a -48v enviroment
-----Original Message-----
From: karlnet-bounces@WISPNotes.com [mailto:karlnet-bounces@WISPNotes.com]
On Behalf Of Bob Hrbek
Sent: Tuesday, 30 November 2004 8:03 AM
To: Karlnet Mailing List
Subject: Re: [Karlnet] Using Karnet in a -48v enviroment
Uhh... can the KN-205 take 48vDC? I think you have to feed it with the
proper polarity or you'll have issues. You probably shorted out the board
when connecting the "grounded" antenna lead.
-Bob
----- Original Message -----
From: "Phillip Britt" <phil@team.wideband.net.au>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Monday, November 29, 2004 2:51 PM
Subject: [Karlnet] Using Karnet in a -48v enviroment
Hi All,
We have recently commissioned a new site with licensed microwave gear for
backhaul. All this sort of gear and our routers use -48v ie, the neutral &
earth is positive.
We plugged in a KN-205 board off our power supply without the antenna
attached and it worked fine. Once the antenna as connected the board went
dead (no lights) and will now not function again.
Does anyone have any suggestions in what l can do here. I have been
considering changing the polarity of the 48v being feed into the KN-205 via
poe in case it was a polarity miss match.
Thanks,
Phil
_____________________________
Phillip Britt
Managing Director
Wideband Networks Pty Ltd
Phone: 03 5135 6888
Fax: 03 5134 1177
Mobile: 0418 528 521
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