[TowerTalk] Towers/Antennas Near 138kV Transmission Lines

ersmar at comcast.net ersmar at comcast.net
Mon Aug 14 16:06:37 EDT 2006


     I spent my first ten years out of college as an engineer with the local electric utility, designing substations, among other things.  One reason that distribution lines might seem more noisy is there are more of them around and the likelihood of having defective or dirty components is greater with these LV lines than with higher voltage lines.  

     You might want to take an AM receiver for BCB/SW and for aeronautical bands out to the property sometime and listen on both.  They both ought to tell you whether arcing (heard as QRN) exists and its extent, frequency-wise.  Don't visit after a rainstorm, though.  The rain will clean off much of the contaminents that cause arcing in the first place.  Go after a few weeks of dry weather if possible.  Dirt, droppings, etc will have had a chance to accumulate, causing the noise you might pick up on your weak-signal receivers.  

     But if it were my money, I'd spend it on a piece of property that was not that close to a power line.  The line might be the best maintained in the country, but why tempt fate if you have a choice?

GL es 73 de
Gene Smar  AD3F

 -------------- Original message ----------------------
From: "Larry Burke" <wi5a at sbcglobal.net>
> In my search for property on which to build a new home we have come across
> several lots that are in proximity to 138kV overhead distribution systems.
> One lot, in particular, is within 150 ft of such lines (there's a lot
> between the one we are looking at and the lines). Obviously, I would not
> construct a tower/antenna system in such a manner as to come in contact with
> these lines. What is the collective experience of the group. anything in
> particular to consider or would you steer away from such property entirely? 
> I plan to operate everything from 160-2m with primary interest being DX.
> >From an RFI standpoint I have heard that such lines can actually be quieter
> than residential distribution. True? 
> Larry Burke  
> Friendswood, Texas
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