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Re: [CQ-Contest] 1/4 inch tubing

To: Stan Stockton <wa5rtg@gmail.com>
Subject: Re: [CQ-Contest] 1/4 inch tubing
From: Joe <nss@mwt.net>
Date: Sat, 3 Jan 2026 21:25:10 -0600
List-post: <mailto:cq-contest@contesting.com>
Forgot this list won't pass images so here's the antenna
https://imgur.com/a/9jej0LU

Joe WB9SBD

On 1/3/2026 9:03 PM, Joe wrote:
Self supporting full sized elevated 40 meter vertical. tip starts as a 1/8" solid rod,
Joe WB9SBD


On 1/3/2026 8:04 PM, Stan Stockton wrote:
Is the need for 1/4” tubing for 40 meter verticals?

I cannot imagine making a 40m vertical or any other HF vertical or half wavelength element that would have anything smaller than 3/8” tubing at the tip.

Stan, K5GO

Sent from my iPhone

On Jan 3, 2026, at 8:02 PM, Joe<nss@mwt.net> wrote:

I wasn't worried about stiffness.
It is the telescoping to the 1/8" rod. the 0.049, it was pretty tough to get a good grip to lock the rod in place too much slop.

Joe WB9SBD

On 1/2/2026 11:54 PM, K9MA wrote:
On 1/2/2026 7:30 PM, Zack Widup wrote:
That's where I have been buying aluminum tubing. They don't have 0.058" wall thickness in 1/4" diameter tubing, but the closest they have for that
diameter is 0.049", which I suspect will work.
You don't get a whole lot of extra stiffness by going from a .049 to .058 inch wall thickness in tubing this small.

73,
Scott K9MA

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