My advice is to run fiber if you must use the tower.
So the whole tower is not charged? Most AM towers are the antenna
themselves. This means as you add equipment you will have to re-proof the
tower as you have changed the radiation pattern of the tower.
I am hoping your climbers have RF monitors or the owner has really
turned down the power for you as you climb.
Justin
--
Justin Wilson <[email protected]>
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http://www.mtin.net/blog xISP News
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Wisp Consulting Tower Climbing Network Support
From: Scott Carullo <[email protected]>
Reply-To: <[email protected]>, WISPA General List
<[email protected]>
Date: Fri, 21 Jan 2011 01:55:40 -0500
To: <[email protected]>
Subject: [WISPA] AM Tower Question
I ran a shielded shireen ethernet cable up a tower today about 50-60 feet
maybe, the cable itself was maybe twice that length to run into a building.
While the cable was being hoisted up I was holding the end and it got so hot
I had to let go. There is an AM antenna running up the side of the tower
and its about 10KW from what I was told.
I am going to assume there is no way to successfully run ethernet up this
tower, I know others have tried and warned me it would not work but I had to
see for myself... I believe it now :)
We do have power (standard outdoor SOOJ type cable 14/3) cable running to a
box 150 feet or so up there. Ethernet runs from the box are about 5-15 feet
max. Mostly unshielded indoor cat5 (I inherited this and have not switched
out yet). Any way the power works fine and the radios and cabling have been
there for years and is also fine.
My question - I was told the power didn't work until a wise old man put a
choke/filter of some sort on the power cable when it entered the box at
150ft. I want to run a new cable and put up a new box, but I'd like to not
climb the tower and figure out what wise old man used. I'd rather know and
have my new box ready for the beating before raising it up there. I usually
use power filters on all our tower boxes (noise filter/supression unit on
incoming power like Square D Surgelogic type LC power filter / surge
protection 5 amp 120v). Is this going to handle the AM problem or do I need
something more specialized?
Thanks
Scott Carullo
Technical Operations
855-FLSPEED x102
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