Mike, you raise a very good point. I was trading 12/17/30 for 12/17 and
gain. But if I add the 30/40 trombone I get 30 meters back and add 40
meters to the top of the tower. Does anyone have any experience with the
30/40 meter add-on. You mention 2 sqft for wind loading - but I am sure the
Tri-Ex can handle that.
I appreciate all the comments. I am ready to re-cable the tower and it
seems like a good time to redo the stuff on top as well.
Terry - W6LMJ
On 7/13/09 11:42 AM, "towertalk-request@contesting.com"
<towertalk-request@contesting.com> wrote:
> Message: 7
> Date: Mon, 13 Jul 2009 09:05:08 -0400
> From: Mike <nf4l_NO_SPAM@nf4l.com>
> Subject: Re: [TowerTalk] TH3MKII vs 3 element SteppIR
> To: "Terrence R. Redding Ph.D." <terry@oltraining.com>
> Cc: towertalk@contesting.com, David Byrd <DGBYRD@aol.com>
> Message-ID: <4A5B3104.2090409@nf4l.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Terry -
> I'm not sure if you mean to leave the dipole up or not. Get the 30/40M
> driven element, and do away with the dipole, and add a band.
>
> Why do you care if it's bigger? Will it extend over your property line?
> If you're worried about Fla. winds, take a look at the pic on the cover
> of the manual.....
> I'm in Jacksonville, and so far my 4L has survived going on 6 years now.
>
> Check the tower specs for wind load. It looks like the 30/40 element is
> 2 sq. ft. bringing the total to 8.1.
>
> You could easily assemble it in a day. Be sure to read the manual at
> least 3 times before you start.
>
> 73,
> Mike NF4L
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