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Re: [TowerTalk] Have you had success with ....

To: 'Tom_N2SR' <tom_n2sr@yahoo.com>, towertalk@contesting.com, Tim Duffy <k3lr@k3lr.com>
Subject: Re: [TowerTalk] Have you had success with ....
From: Richard Smith <n6kt1@sbcglobal.net>
Date: Sun, 21 Jul 2019 01:35:08 +0000 (UTC)
List-post: <mailto:towertalk@contesting.com>
 I believe that the rope in the elements, specifically the element tips, is 
particular to the Hy-Gain yagis, at least the 20, 15, and 10 meter designs. I 
have seen a Hy-Gain yagi, a 5 element 15 meter yagi, with most of its element 
tips broken off by regularly occurring, but not huge, winds. The yagi was built 
without the rope in the element tips that is shown in the manual for the 
antenna.
I replaced the element tips in 1992, with the rope in the tips per the 
instructions in the manual, and did not have any element tips break off during 
the next 17 years of service at the same location.
Just sharing my experience.
73, Rich, N6KT
    On Saturday, July 20, 2019, 05:17:53 PM PDT, Tim Duffy <k3lr@k3lr.com> 
wrote:  
 
 Hello Tom:

I have 26 Yagi's in the air here and my experience is the same as yours. No end 
caps ever on the elements and no problems. Also no water related corrosion 
issues.

Every time I am involved in a takedown of a Yagi for a friend ham - and there 
are caps - there is water inside.

Condensation is a real problem and taking steps to deal with it (dry) slows the 
aluminum corrosion process.

I have never used rope in elements - no breakage here.

I must be lucky :-)

73
Tim K3LR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Tom_N2SR 
via TowerTalk
Sent: Saturday, July 20, 2019 8:09 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Have you had success with ....

 Helped a friend take down his old Mosley CL-33 (being replaced with a C19XR 
soon).  I rigged the antenna to lower it, and when I pulled the U bolts, the 
antenna wanted to flip backwards - because of the water in the boom - because 
he put the caps on.  
All of my antennas (Force 12) have no caps on the boom nor elements.  Have had 
zero problems with spiders, bees, wasps or other flying creatures.  
73, 
Tom, N2SR



    On Saturday, July 20, 2019, 12:42:44 PM EDT, Tim Duffy <k3lr@k3lr.com> 
wrote:  
 
 Hello Bob:

How do you get the water out of your elements with caps on them?

73
Tim K3LR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Bob 
Shohet, KQ2M
Sent: Saturday, July 20, 2019 12:31 PM
To: john@kk9a.com; towertalk@contesting.com
Subject: Re: [TowerTalk] Have you had success with ....

My experiences have been different from KK9A.  Open element tips with nothing 
capping them, is just an invitation for spiders, bees, wasps and other flying 
creatures to nest in them (extremely common here in the deep forests of Western 
CT) and their nests block the drainage of water, trapping it inside for it to 
freeze and split the element.  Or, the water stays inside and the weight builds 
up adding to the potential weight and torque imbalances in a heavy wind.

Prior to my living here I really didn’t think that spiders would want to climb 
much less nest in anything 130’ off the ground.  I was wrong.  And the 
bee/wasp/flying insect issue was a problem with element tips too.  Now I don’t 
ever have a problem with them in my antennas because they can’t get in because 
I cap and seal the ends.  Antennas that use traps have an even bigger potential 
problem – there have been many past posts on this reflector on the topic of 
trap failures because of nesting insects.  

CAUTION:  Different qth’s have different climates and different critters.  Be 
sure that you know what you are dealing with BEFORE you make a choice to not 
cap your element tips.

73

Bob KQ2M


From: john@kk9a.com 
Sent: Saturday, July 20, 2019 11:54 AM
To: towertalk@contesting.com 
Subject: Re: [TowerTalk] Have you had success with ....

I have been using NO end caps for decades. There is nothing to fall  
off and nothing to seal water inside the boom or elements which would  
cause severe damage.

John KK9A




Charles Morrison N1RR wrote:

Have you had success with:
Hot glue gun to attach vinyl end caps to aluminum yagi tips or boom ends ?

-Charlie N1RR
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