Tom DeReggi wrote:
Blair,
I am using a DC to DC converter with each of
my WRAPs so they are powered with the Lucent standard 48V POE. The
D-Link 5V/12V switchable POE units work fine for this.
I take it then that the D-Link 12V Poe terminator then acts sorta like
a fuse or barrier between the WRAP and the 48V POE. How do you get the
Dlink 12V POE terminator inside the radio case? Does it just hang
inside? What is that combination POE costing you?
I would not say it acts as a fuse. It doesn't 'blow out'. It just
seems to be much more tolerant of voltage spikes on its input side
while keeping the 12VDC output side steady. I build my own cases for
the WRAPs using FiberCor boxes. I just let the POE dangle in the radio
box. I also buy a 1ft network cable to use with it in the radio box.
The D-Link POE is about $30 or so.
I use flooded, shielded, with drain wire,
outdoor CAT5 cable. (about $75 for 1000ft) I tie the drain wire to
the coax and WRAP board ground topside. I ground the coax to the
tower/antenna mount. Ground the drain wire at the power injector.
Great idea, using the drain wire cable. What brand cable do you use,
that only costs $75 a spool?
I get it from ARC wireless. Part number SW-CAB-108190.
Speak to Ken. Here is his contact info....
<>Kenneth M. Muscato
National Sales Manager
>Mobile Base Station
& Flat Panel Antennas & Cable Products
<>
Wireless Communications Solutions Division,
ARC Wireless
Solutions, Inc.
>219 West Tanglewood Drive
Arlington Heights, IL
60004
<>Ph# 847-778-2589
email address [EMAIL PROTECTED]
>www.antennas.com
Please tell him I sent you there.
I'm paying about $265 for Superior Essex without a drain wire.
Tom DeReggi
RapidDSL & Wireless, Inc
Since doing this, I have had NO WRAP
failures, and no spike induced lockups that require a power off/on
cycle.
Using this in other locations, (non WRAP) seems to have eliminated the
need for POE/ethernet surge protectors..
We have had several major thunderstorm systems go thru since then. I
have not lost any equipment at locations I have done this at. We used
to loose a WRAP or 2 with each major storm front.
Note that shielded CAT5 doesn't seem to be good enough. The drain wire
seems to be required.
Blair
Tom DeReggi wrote:
What are people doing for WRAP board
lightning protection?
Basically the WRAP board has a part that blows up, if it receives more
than 21 Volts to its DC input.
So a typical CAT5 Lightning protector that protects the DC pairs at
only 35V, 50V or 60V would pretty much be useless for protecting the
WRAP over the DC lines.
Any Protectors on the market that start to clamp at 20V DC? I'm
guessing most people are just going without lightning protections, and
settling for UPS protection on the AC line?
What about the COAX/antenna side? If installing the WRAP radio up on a
tower, with an external antenna with a 3 foot Caox cable to it, are you
guys, springing for the COAX lighting protector?
For a several 10 ft run down a tower, of course the COAX protection
should be used, but for a 3 ft run?
I like the WRAP boards, but the 21V max tolerance, I think could end up
being a major flaw for wide scale deployment.
What are others finding? I like the design of the Mikrotik 532's
better, but to standardize on it, I need to know that there is more
than one distributor/reseller of the product nationwide. Hopefully the
production will improve once the product becomes more mainstream.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
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West Michigan Wireless ISP
269-686-8648
A division of:
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