[MLB-WIRELESS] POE for SVEC AP

[Rob Clark]

Dan,

As a suggestion..I would slightly modify the wiring so that the 5V
wiring takes better use of the twisted pairs ... And hence be less
likely to get crosstalk to/from the 5V wires.

Here are my suggestions: Basically +5V on the 'solid' colour wires, and
the return on the colour/white wires
 
      4 Blue (POSITIVE 5V  to YELLOW on the socket)
     4 not used

      5 Blue & White (NEGATIVE 5V to BLACK on the socket)
     5 not used

      7 Brown & White (NEGATIVE 5V to BLACK on the socket)
     7 not used

      8 Brown (POSITIVE 5V to YELLOW on the socket)
     8 not used


I have no idea if crosstalk is an issue or not.....but can't hurt to
make this change

Cheers

Rob

-----Original Message-----
From: owner-melbwireless at wireless.org.au
[mailto:owner-melbwireless at wireless.org.au] On Behalf Of Dan Flett
Sent: Wednesday, June 11, 2003 9:56 AM
To: Brandon Alexander McLean; Melbourne Wireless
Subject: Re: [MLB-WIRELESS] POE for SVEC AP


Hi Brandon,

I've made a POE kit for my SVEC APs.  It's based on the one on the
NYCwireless site here: http://www.nycwireless.net/poe/

I've used the following pinout


      ACCESS POINT SIDE
     NETWORK SIDE




      1 White & Green
     1 White & Green

      2 Green
     2 Green

      3 White & Orange
     3 White & Orange

      4 Blue (NEGATIVE 5V to BLACK on the socket)
     4 not used

      5 Blue & White (NEGATIVE 5V to BLACK on the socket)
     5 not used

      6 Orange
     6 Orange

      7 Brown & White (POSITIVE 5V  to YELLOW on the socket)
     7 not used

      8 Brown (POSITIVE 5V to YELLOW on the socket)
     8 not used




I bought a two-socket and a one-socket RJ45 wall mount box from
Middentorp... the two socket box is the POE injector, the one-socket box
is bolted onto the bottom of the SVEC APs waterproof box and distributes
the power and the Ethernet to the appropriate sockets on the AP.

CAT 5 has a resistance of approx 1 ohm per 10 metres (round trip, using
two conductors each way).  The power supply that comes with the SVEC AP
gives out about 5.15V, and the AP itself will operate with a minimum of
4.5V, maximum of 7.0V (before you blow up the regulator).  The AP will
probably never draw more than 0.5 Amps under normal operation, although
I've gotten it to draw 0.8 Amps in radio test mode.  Basically if you
want to run your AP over more than 10 metres of CAT5 you'll need to use
a power supply with a higher voltage than the one supplied.

If you're going shopping, get 2.5mm Short Shaft DC plugs and sockets for
the power, and I'm told a small flat blade screwdriver works well for
punching down wires into krone blocks if you don't have a krone tool.  I
do have a krone tool so I don't know myself. :)

Whilst stumbling in my car I discovered a SSID of junction whilst
driving through St Kilda Junction.  They had a strong signal, but I
don't know anything more about them.

Not sure what BSSID stands for, but it seems to be the MAC address of
other APs that your AP can see.  The "Preferred BSS"  is the MAC address
of another AP that your AP will preferentially connect to in Client Mode
if your AP can see more than one BSS.

Wireless Repeater mode doesn't work.  It seems to crash the AP,
requiring it to have it's factory defaults reset from the USB utility.
There might be a way to make the Wireless Repeater mode work, but I
haven't figured it out yet.  It might have something to do with
compiling MIBs, which is a bit over my head at the moment. :)

There are other things that can be done to the SVEC, including
increasing the output power to 100mW. I've done this but it seems to
make connections unstable.  Best to leave the power settings alone I
think.  Also, there's a way to change the regulatory domain of the AP
(FCC, ETSI, etc) that allows you to go up to Channel 14.  But making
this setting "stick" involves playing with MIB compilers - over my head.

Hope this helps,

Dan

----- Original Message -----
From: "Brandon Alexander McLean" <215835 at bud.cc.swin.edu.au>
To: <melbwireless at wireless.org.au>
Sent: Wednesday, June 11, 2003 10:56 AM
Subject: [MLB-WIRELESS] POE for SVEC AP


> I am sure i have seen this discussed on the list before but i seem to 
> have
not
> copied the link.
>
> Has anyone got the POE working for the SVEC im hoping to build a 
> little
POE
> tonight if possible since lugging power extension cords around the 
> house
is a
> pain in the arse...
>
> I just got my SVEC AP last night. Thanks Jamie Moir your a legend..
>
> and am going to pickup a connector to put together a cantenna tonight 
> as
well
> for a bit of testing...
>
> but wouldn't mind figuring out the POE so i am only dragging one cable

> around...
>
> last night i fired up the AP with just the normal antennas attached 
> and
found
> a AP with the SSID of default and one of junction...
>
> couldn't get a connection but it was very kewl.. anyone know who these
are?
>
> I got BSSID's which to me look like mac addresses but have left them 
> at
home
>
> what is a BSSID?
>
> sorry about all this turns out wasn't just a question about POE...
>
>
>
> --
>                            Brandon
>
>
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>

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