Additionally consider, just because something works
on the ground doesn;t mean that it will work up in the air, for two
1) When operating outside of specs, it may take a
period of time before the equipment starts to fail and flaws show
(heat build up, or stress on
2) Interferences stretched along the tower
structure for 250 feet, may be different than interferences that exist in a coil
at the ground.
Take note, that even though COILS can degrade
signal, I've tested 500 feet cables on the ground in coils with Trango
successfully, but up on a roof, failures at 200 feet in some
first, do the math.
second, test on ground.
third, prey that it will works after its been
installed on the tower. :-)
The most important lesson, is to rule out unknowns
before you install on the tower.
Test IP configurations of radios from laptop. Use
patch cables that will be used when testing live. Work with a set of
So you don't have to Climb just to rule something
out. And always test before you climb down.
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless
----- Original Message -----
Sent: Friday, September 15, 2006 12:48
Subject: Re: [WISPA] MT power supplies
I just looked at that Resources for a 532. 2
Ports are VIA Technologies. The 3rd is Integrated Device Technologies.
Design, Installation and Administration
---------- Original Message
From: Brian Rohrbacher <[EMAIL PROTECTED]>
WISPA General List <email@example.com>
Sent: Fri, 15 Sep 2006
Subject: Re: [WISPA] MT power supplies THE SOLUTION
> I started with.... RB 532 on tower. It
comes down 265 feet to poe
> injector to router. Major packet
> 2) switched RB 532 out. No change.
Created test setup on ground with "bad board" and it looked fine.
> (from laptop--6ft cable----poe----265 ft---RB)
> 4) Blamed it
on the cable, and got a cable certifier from a friend.
> 5) Right
before climb, I re did the test setup on the ground. This
I plugged the 265 feet into the actual router instead of my
The problen was back. (I was bummed)
> 6) One final
test. Get another 265 foot cable. I used 265ft for power
and 265ft for data to eth 2 or 3.
> Problem solved.
> I can only
speculate that the chipset on RB 532 poe port is diffrent
> from the
chipset on eth 2/3.
> And for whatever reason it was not compatable
with cable, hardware,
> I may never know for
sure why, but I have the workaround. Good enough
> for me.
> FWIW I ended up pulling 2 new cables (all 3 certified
fine). I used
> the original cable for data (it has "real"
shield) I used my new 2
> (cheapo foil shield) for power and
slapped the other into eth3 for the
> heck of it.
Lessons learned for next time.
> Measure cable, crimp, and power up on
ground using the EXACT same
> everything as what the final deployment
will have. And then test.
> Hope that sums it all up.
> Ok to directly answer your question. Yes. I did
this on the ground
> test unit.
> Paul Hendry wrote:
> >Just out of interest, did you try running both
power and data over the new
> >cable and did you still see the same
> >From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
> >Behalf Of Brian Rohrbacher
> >Sent: 15 September 2006 02:43
> >To: WISPA General List
> >Subject: Re: [WISPA] MT power supplies THE SOLUTION
> >First off. I'm back to a 48v 420mA power supply.
>To the solution.
> >I ran another cat5 up the tower and plugged
it into the RB 532.
> >Now I have one cable for poe and one cable
for data, and it all works fine.
> >And check this. My
headache went away as soon as the problem did. :)
>Tom DeReggi wrote:
> >>Amps don't mean a thing without disclosing Volts, Consider
> >>instead. 1300mA at 3V is much different than 1300mA at
> >>The mPCI slot (SR5) is 3.3V. Power to the
Motherboard is from
> >>12-48V. W=V*A
> >>RapidDSL & Wireless, Inc
>>IntAirNet- Fixed Wireless Broadband
> >>----- Original Message ----- From: "Mark McElvy"
> >>To: "WISPA General List"
> >>Sent: Wednesday, September 13,
2006 8:19 AM
> >>Subject: RE: [WISPA] MT power supplies
> >>I am surprised no one has
mentioned this. I looked up power consumption
> >>on the SR5 and
it shows 800 to 1300 mA each. You state your power supply
700mA. I did not look up power consumption for the RB532 but I would
>>think you would need at least a 3A supply.
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>>Behalf Of Brian Rohrbacher
> >>Sent: Tuesday, September
12, 2006 11:51 AM
> >>To: WISPA General List
>>Subject: Re: [WISPA] MT power supplies
>>So, does anyone know if it looks like I would be fine on the power
> >>of things?
> >>I have tweaked the ethernet
port settings for no gain.
> >>Next step is to
get climbing 280ft to replace board, but I'd like to
> >>Brian Rohrbacher wrote:
> >>>I have a RB 532 on 300
foot of cat 5 with 2 sr5.
> >>>I'm using poe 48v .700a power
> >>>I'm seeing weirdness.
> >>>Do I have enough "juice"
> WISPA Wireless List: firstname.lastname@example.org
> Archives: http://lists.wispa.org/pipermail/wireless/
End of Original Message -------
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