and they had a licensed link at one point. 



----- 
Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 



Midwest Internet Exchange 
http://www.midwest-ix.com 


----- Original Message -----

From: "Ken Hohhof" <af...@kwisp.com> 
To: af@afmug.com 
Sent: Thursday, September 10, 2015 9:38:51 PM 
Subject: Re: [AFMUG] a new one, I think... 




Or run 48 VDC up the tower and put a Mean Well RSD up there. 

A few years back, a WISP near here had a solar site up on a water tank. Every 
year they added more panels, and they never had enough. It got pretty 
ridiculous looking with all those solar panels hanging off the railing around 
the side of the tank. Granted, this is northern Illinois, not Florida. 





From: Paul McCall 
Sent: Thursday, September 10, 2015 9:24 PM 
To: af@afmug.com 
Subject: Re: [AFMUG] a new one, I think... 



Where in line to use it? We haven’t had great luck with placing those at the 
start of the AC path. 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Lewis Bergman 
Sent: Thursday, September 10, 2015 10:23 PM 
To: af@afmug.com 
Subject: Re: [AFMUG] a new one, I think... 

Why don't you use an isolation transformer? Much cheaper than solar and less 
tricky than hanging it on a tower. 



On Thu, Sep 10, 2015, 9:04 PM Paul McCall < pa...@pdmnet.net > wrote: 




We charge our batteries now and a 24v array using a Samlex charger. But, that 
doesn’t isolate it from grid power. The charger (powered by 110) 24v output 
goes to the same “bus” that feeds the batteries. So, BOTH charger output and 
battery output are “on” at the same time. 

I asked here last week about a way to just run off the batteries, and no 
workable solution was found. 

From: Af [mailto: af-boun...@afmug.com ] On Behalf Of Cameron Crum 
Sent: Thursday, September 10, 2015 9:59 PM 



To: af@afmug.com 
Subject: Re: [AFMUG] a new one, I think... 




If you are just looking for AC power isolation, then why not just a bank of 
batteries charged by grid power? This would isolate you from powerline surges. 
Cell sites have been running this way since the beginning of time. 






On Thu, Sep 10, 2015 at 8:38 PM, Paul McCall < pa...@pdmnet.net > wrote: 






In most cases, yes we own the tower. 







From: Af [mailto: af-boun...@afmug.com ] On Behalf Of Lewis Bergman 
Sent: Thursday, September 10, 2015 9:32 PM 









To: af@afmug.com 
Subject: Re: [AFMUG] a new one, I think... 









Do you own this tower? I can't imagine what I would charge someone to put a 
solar site on one of my towers. 











On Thu, Sep 10, 2015, 8:19 PM Josh Luthman < j...@imaginenetworksllc.com > 
wrote: 









<blockquote>


If you get enough panels and batteries you'll be fine. If you cheap out and 
don't get enough battery run time you'll hate yourself. You're in Florida so I 
think with the lack of winter and a proper budget (batteries) you'll have no 
problems. 








Josh Luthman 
Office: 937-552-2340 
Direct: 937-552-2343 
1100 Wayne St 
Suite 1337 
Troy, OH 45373 



On Thu, Sep 10, 2015 at 9:18 PM, Paul McCall < pa...@pdmnet.net > wrote: 


<blockquote>



You are correct on your calculations… my spreadsheet formula was wrong J I just 
came up with 104 watts. 

I will ask the question naively.. why would you expect a headache? Isn’t solar 
tried and true these days? 

I am dealing with every aspect of surge protection I possibly can at every 
level already, as this summer has been a monster for us on surges. So, am doing 
the fiber up the tower in some cases, so I WILL have gear up there, which has 
its own sets of “concerns” regardless of how I power them. 

So, is a solar setup not reliable? The “expert” claims that he seeing it more 
and more in the cellular world, up the tower 

Paul 



From: Af [mailto: af-boun...@afmug.com ] On Behalf Of Josh Baird 
Sent: Thursday, September 10, 2015 9:10 PM 
To: af@afmug.com 
Subject: Re: [AFMUG] a new one, I think... 




<blockquote>







I would at least allow 7.5W per ePMP radio (specs say 7.5 is typical, can spike 
to 10), and 10-15W per 320. Maybe another 5-10w per MT radio. That would be 
close to 100W. You don't want to underestimate power consumption. 



Regarding your solar question.. I'm not sure, but that sounds like one hell of 
a headache. 



Josh 
</blockquote>



<blockquote>







On Thu, Sep 10, 2015 at 9:00 PM, Paul McCall < pa...@pdmnet.net > wrote: 
</blockquote>



<blockquote>









OK, so I am working with a grounding expert today, getting some opinions on a 
couple difficult towers, and one of the first suggestions he has for me as I 
mention that I am looking to do fiber / DC up this tower is… “Have you 
considered going solar up the tower?” (to eliminate power surges completely 
from going up the tower) 

Hmmmm… 

So my brain starts wrestling with that… Is it practical? 

Say on a tower with a Netonix DC powered switch running at 48v or 24v, powering 
6 ePMP APs and 2 320APs, 2 Mikrotik Bhs, and a small Mikortik router. 

Would be about 50 watts maximum according to my quick calcs. 

Not knowing anything about solar, has battery technology developed enough that 
it would be practical (size wise) to have enough batteries and a charge 
controller up in a box on a tower? And what size solar panel would I need to 
drive that? 

Paul 

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 
pa...@pdmnet.net 

</blockquote>

</blockquote>

</blockquote>

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