I just tried the experiment with a used M2 that I had around and was willing to 
sacrifice.  The LED on the POE-24iR-CI was off, probably indicating a short.  I 
only left it plugged in for maybe 30 seconds.  Afterward I plugged the 
Nanostation into a Ubiquiti POE and it powers up.  Not sure if this means it is 
OK, or it is partially fried and cannot be relied upon long term, or would have 
been fried if I had left it plugged in longer.

 

I am trying to decide if this is a truck roll and new radio situation, or a 
mail the customer a new POE situation.

 

(The story behind this is customer A buys the house of customer B and is moving 
in.  Customer B had Nanostations from a shop building to the house because of 
line of sight issues.  Customer B did not leave the Ubiquiti POE.  Customer A 
goes to his old house and brings the Cambium POE to the new house and plugs it 
in.)

 

 

From: AF <[email protected]> On Behalf Of Mathew Howard
Sent: Monday, December 2, 2019 7:39 PM
To: AnimalFarm Microwave Users Group <[email protected]>
Subject: Re: [AFMUG] will reverse POE fry an M5 Nanostation?

 

I would guess not, but it could be...

 

On Mon, Dec 2, 2019 at 7:26 PM Bill Prince <[email protected] 
<mailto:[email protected]> > wrote:

I'm guessing you're right. Nanostations are cheap enough that I would not 
expect them to have reverse polarity protection.

 

bp
<part15sbs{at}gmail{dot}com>
 

On 12/2/2019 5:21 PM, Ken Hohhof wrote:

I have a customer who plugged an M series Nanostation Loco into a reverse 
polarity POE intended for a Cambium SM. (long story)

 

Anybody know if this means the Nanostation is fried?  I’m guessing yes.

 

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