[TriLUG] OT: PoE injector/splitter - recommendations?

[David McDowell]

We need to power 7 WAPs (inside our office) and we are looking at
these options as a midspan injector rather than a powered switch:

4XEM EPOEMS12 – $359.99 on the Dell web site
D-Link DWL-P1012 - $469.99 on the Dell web site
PowerDsine PD-3512 - $579.99 at CDW; not carried by Dell

Currently the 5 WAPs we have online are using individual PowerDsine
units but we wanted a better, cleaner solution as our wifi grows.

Hope that helps.
David
_______
http://www.notollson540.org


On Mon, May 12, 2008 at 9:22 PM, Joseph Mack NA3T <jmack at wm7d.net> wrote:
> On Mon, 12 May 2008, Robert Dale wrote:
>
> > You would ground your NEMA enclosure.  You do have one, right?
>
> hmm. It's all indoor (I forgot to mention this, sorry about
> that). Do I need a NEMA enclosure for an indoor wap at the
> end of 100' of ethernet cable?
>
> > Ground the equipment to the NEMA enclosure.  If your
> > antennas are mounted on a mast, ground the mast.  Ground
> > your antenna cables.  Check your local laws on what type
> > of conduit you should use, if it's metal, ground it.
>
> OK (I assume for outdoor.)
>
> > On the power side, ground your power supplies, switches,
> > and anything else that's touching and conducts electricity
> > and/or use surge-protectors.
> >
> > For the truly paranoid, you can use ethernet surge
> > protectors and power filters.
>
> I had been wondering if I needed ethernet surge protectors.
> At $100 each (times 2 ends of the ethernet), they're more
> than the wap. However if I'm going to loose a wap every
> electrical storm, then ethernet surge protectos are
> essential.
>
> Any ideas if ferrite cores help? I have them at home on each
> end of long runs of ethernet, but I have no idea if they've
> helped. No-one is claiming them as being useful for
> lightning protection.
>
> Joe
>
> --
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) wm7d (dot) net - azimuthal equidistant map
> generator at http://www.wm7d.net/azproj.shtml
> Homepage http://www.austintek.com/ It's GNU/Linux!
> --
>
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