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Re: [CQ-Contest] antenna irregularity noticed

To: Rick Dougherty NQ4I <nq4i@contesting.com>
Subject: Re: [CQ-Contest] antenna irregularity noticed
From: k3bu@optimum.net
Reply-to: k3bu@optimum.net
Date: Tue, 04 Aug 2009 10:42:46 +0000 (GMT)
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
Hi Rick,Isn't there insulator - spacer midway?Maybe deteriorated, contamination 
causing resistance - heating?Yuri, K3BU.uswww.MVmanor.com> Hi all..this is 
probably the best place to air this one....I > took down a KLM> 4 el 40m 
linear-loaded antenna today to repair the reflector > that had been> damaged in 
last winter's ice storm...when I got it to the ground > I noticed> that the 
aluminum strapping that is used to feed the front > driven element to> the rear 
driven element showed signs of some sort of heating in > the middle> 12 
inches...before some one says I am using too much power...the > antenna has> 
never been driven with more than 1500 watts...I replaced the > original KLM> 
4:1 balun with one made of coax a few years ago...has anyone > else seen the> 
heating in the crossover strap as I am seeing? This has really > gotten my> 
curiosity up to say the least...we have problems here with > buzzards sitting> 
on the antennas from time to time, but I didn't find one dead at > 
 the base of> the tower...unless of course his buddies carried him off after > 
he was> sufficiently warmed up!> > So warm buzzard? Heat from unknown source? 
Some sort of chemical > reaction?Could the phasing straps have shorted out and 
caused > the heating??> > I await the replies..de Rick NQ4I> 
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