That's "magic" smoke.
----- Original Message -----
From: "Phillip Britt" <phil@team.wideband.net.au>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Monday, November 29, 2004 3:24 PM
Subject: RE: [Karlnet] Using Karnet in a -48v enviroment
Wow! The card l have is toast, but surprisingly enough there wasn't any of
that "you have let the smoke out" smell.
-----Original Message-----
From: karlnet-bounces@WISPNotes.com [mailto:karlnet-bounces@WISPNotes.com]
On Behalf Of Bob Hrbek
Sent: Tuesday, 30 November 2004 8:14 AM
To: Karlnet Mailing List
Subject: Re: [Karlnet] Using Karnet in a -48v enviroment
BTW, I've had 15 amp fuses blow when I connected the pigtail. The cards
were toast too.
----- Original Message -----
From: "Bob Hrbek" <bhrbek@jagwireless.net>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Monday, November 29, 2004 3:11 PM
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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