There have always been two of them on the antennas I've installed the
last 40+ years.
73, Jim W7RY
On 8/9/2022 12:57 PM, Jeff Blaine wrote:
I could not remember what a DB224 was. Looked it up and was laughing
to see the hose clamp on that antenna. The funny part is that in the
current version, they have doubled up on the hose clamps - meaning
there are 2 side by side.
No doubt they added a 2nd hose clamp because the first one was
ultimately inadequate to the task.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 8/8/22 9:28 PM, Jeff Blaine wrote:
Apples and oranges.
Hose clamps work fine with HORIZONTAL elements. The slightest
compression is adequate to contain most movement.
But the issue K3PA mentions is with a vertical 4SQ. That is a
completely different issue all together. The tension must be high
enough to resist the total vertical force of the metal above, while
being twisted in the wind, over time and temp.
And even here in Kansas, where the wind does blow on occasion, we can
appreciate the differences between 21' and 65' - assuming the 21'
mention is vertical in orientation.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 8/8/22 12:17 PM, john simmons wrote:
And yet a popular and old design 21’ commercial antenna is
successfully held together with one worm drive hose clamp
On Aug 8, 2022, at 11:19, Drew Vonada-Smith
<drew@whisperingwoods.org> wrote:
Ouch. I think I bought a tomato slicer from that guy once.
I've had better luck with the T-bar style clamps in the tougher
applications. But on my 80M 4SQ, which needed repairs every year,
I gave up and went to a combination of bolts, and rivets on the
smaller sections. Not a failure since. I've mostly given up on
hose clamps as a reliable antenna fastener.
K3PA
-----Original Message-----
Message: 1
Date: Sun, 7 Aug 2022 20:53:15 -0400
From: Jon Pearl - W4ABC <jonpearl@tampabay.rr.com>
To: towertalk reflector <towertalk@contesting.com>
Cc: CrankupTiltoverTowers@groups.io
Subject: [TowerTalk] Hose Clamps Compared...
Message-ID: <f932d352-32fe-2a22-a0e9-3fe1e61a8e81@tampabay.rr.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Sixteen hose clamps are put through a torture test in the video,
below.?
A link to each clamp is provided under the description.
https://www.youtube.com/watch?v=jtMPq2lG-8U
73,
Jon Pearl - W4ABC
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Thanks and 73, Jim W7RY
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