We have a general rule of not running ethernet up towers for lots of 
reasons.  That said, you are forced to run power, or get it from an 
electrical  junction box on larger towers.  Once you have ran fiber and 
have power, might as well put all the goodies on the tower following the 
rule of not running cat5 up the tower you pretty much have to keep the 
stuff in the box - except the router.  We find that the router is the most 
common part we upgrade and swap out, and occasionally have an issue with 
since its MT, so its downstairs along with the web power switch that can 
reboot the router or the whole tower.  Power is your most critical 
component so get a good UPS, we use sine wave inverters with good quality 
12v batteries and up top industrial din mount power supplies, fuses, power 
filters etc.  Our boxes accept up to 3 standard rack mount devices (HP 
switch, Router if we put it up there, DLI power controller etc).  Any way, 
we probably spend more on our boxes than most but some have been running 
over 10 years now without an issue.  Estimated price per box with doesn't 
include any radios, routers etc - maybe $5k if you manufacture it all 
yourself.  Double that if you pay an industrial controls company to do it 
for you.

These things are like recipes, everyone has their flavor to suit their 
needs and most are a family secret ;)

Scott Carullo
Technical Operations
855-FLSPEED x102

----------------------------------------
From: "Chris Fabien" <[email protected]>
Sent: Wednesday, November 06, 2013 11:01 PM
To: "WISPA General List" <[email protected]>
Subject: [WISPA] Equipment for Fiber+Power to tower top

I am planning out a site where some of our radios have fiber interfaces and 
the rest are cat5. If we are running fiber up the tower, I think it makes 
sense to just put a switch and POE control at the top and run fiber up to 
that as well. 

My first thought is packetflux for POE control and a RB2011iLS-IN for the 
cat5->fiber. But this grade of equipment makes me a bit nervous putting up 
at 220ft on a tower. Is there better quality equipment I should be 
considering? This will be a major site for us so $1000 for a hardened 
switch or media converter would not be out of the question, if it's 
justified.  
Is it better in this approach to bring all the runs (via several fibers) 
down to a router at the base of the tower? This site is all wireless fed so 
we don't really need anything at the base other than power equipment, 
except for the ability to plug in for troubleshooting. Or should I just run 
power up top and put my router right up there too? 
Thanks for your suggestions. 
 


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