Craig,

Great!  Thanks for that feedback.  It seems I am good to go!

Paul

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Craig Baird
Sent: Thursday, January 16, 2014 9:23 PM
To: Mikrotik discussions
Subject: Re: [Mikrotik] Use of RB2011 in outdoor environment - WAS: major 
problem with rb751u-2hnd routers

I have two in outdoor boxes on our wireless network.  They ran through the 
summer with no trouble--Southern Utah desert 95+ degrees almost every day, 
often going over 100.  Not sure what the temp was in the boxes, but there is an 
APC UPS with them, so it would have been pretty toasty.  We also have about 25 
in outdoor boxes on the side of homes that we are using for fiber ONTs.  I 
haven't seen a problem with any of them related to heat.

OTOH, we did have about 7 or 8 units that had trouble in extreme cold back in 
December.  They would start dropping packets once it got below freezing, and it 
would get worse as the temp droped.  It seemed to be with a particular batch of 
units that we bought around summer of 2013.  
  Units before that time were fine, as were the new units with the power 
connector on the back.  Note that all of these are 2011-LS-IN units.

Craig


Quoting Paul McCall <[email protected]>:

> Hi Heith,
>
> Thanks for the feedback.  No, we aren't in the same climate, but 
> that's interesting.
>
> So, I know it do cold well, that's for sure !  :)
>
> Now, if I can get a couple votes on the hot side of things, we're good.
>
> Paul
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Heith 
> Petersen
> Sent: Thursday, January 16, 2014 8:49 PM
> To: Mikrotik discussions
> Subject: Re: [Mikrotik] Use of RB2011 in outdoor environment - WAS:  
> major problem with rb751u-2hnd routers
>
> Paul,
>
> my buddy just north of me has 7 of them on his small network.  
> Installed a year ago. Had to swap one of them out due to the need for 
> a bigger router.
> Otherwise been good in our South Dakota weather, not near as hot as 
> your weather but a little on the cold side at times. All of these 
> sites are mostly just a 12 x 18 enclosures outside with just venting, 
> no environment control
>
> -----Original Message-----
> From: Paul McCall
> Sent: Thursday, January 16, 2014 7:27 PM
> To: Mikrotik discussions
> Subject: [Mikrotik] Use of RB2011 in outdoor environment - WAS:  
> major problem with rb751u-2hnd routers
>
> We currently have a lot of RB493AH out in the field at tower sites.   
> When looking at the 2011 series, I see that they should be a fit 
> faster, and cheaper as well.
>
> But, I also see the description saying its an "indoor device".  We use 
> the 493AH in a normal case and inside a metal job box in the Florida 
> sun that has fans but certainly gets warm.
>
> So, what makes the 2011 an "indoor device" ?  Anybody of real world 
> experience in an outside tower box as I have described?
>
> Paul
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Corey 
> Freeman
> Sent: Friday, January 10, 2014 6:20 PM
> To: Mikrotik discussions
> Subject: Re: [Mikrotik] major problem with rb751u-2hnd routers
>
> Paul,
> There are posts on the MT forums of complaints with similar issues.  
> I have had similar issues with the 751 and 951 units. Signal strength 
> is sporatic and throughput is initially ok, then quickly drops off to 
> zero.  I switched to 2011 series and have never looked back. MT keeps 
> avoiding questions about this on the support forums
> so it's highly unlikely that they will ever admit the root cause.   
> My customers were unhappy with some of the units I deployed, so I just 
> quit using them alltogether.
>
> Corey
>
> On Fri, Jan 10, 2014 at 5:07 PM, Paul McCall <[email protected]> wrote:
>> We did an install today and we have been using rb751u-2hnd  quite a 
>> bit, as they generally make for a nice solution.
>>
>> We did a wireless scan of the house (with our CPE radio off even) and 
>> it looks clean.
>>
>> We tried (2) different rb751u-2hnd  and both have same issues, 
>> regardless of firmware versions 4, 5 or 6.
>>
>> WEAK signal... like 10 ft. away its weak even... down to around -68 dB ...
>> at 20 ft. its gone.  We use the same settings all the time and I 
>> swear I think I have gone through every single possibility of 
>> frequency, band, frequency mode, country code, antenna gain, default 
>> or configured data rates, dynamic or indoor distance settings, HT 
>> RX/TX Chains and antenna modes, every combination of Tx Power Mode, and 
>> bumping up or down 3db,
>> 6dB, 9dB, etc..   Back at the defaults its shows Current Tx power at 25dB
>> to 30dB (depending on modulation of course)
>>
>> Pulling our hair out for past 3 hours trying to make it work.
>>
>> Do we possibly have two Brand new bad units?  We have 5 others from 
>> the same purchase lot working normally.
>>
>> Any thoughts?
>>
>> Paul McCall, Pres.
>> PDMNet / Florida Broadband
>> 658 Old Dixie Highway
>> Vero Beach, FL 32962
>> 772-564-6800 office
>> 772-473-0352 cell
>> www.pdmnet.com<http://www.pdmnet.com/>
>> [email protected]<mailto:[email protected]>
>>
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