[TowerTalk] TH3MKII vs 3 element SteppIR

[Terrence R. Redding Ph.D.]

Mike, the bottom line is the reflector of the TH3MKIV hits the edge of the
roof as I lower/tilt the tower.  The SteppIR will be about four feet longer
on a side, so much worse.  The trombone would be even worse.

Have to think through how I am going to assemble the antenna and get her up
and down for maintenance.

Terry W6LMJ 


On 7/13/09 6:17 PM, "Mike" <nf4l_NO_SPAM at nf4l.com> wrote:

> Terry -
> Proximity to the house is a factor, I'd agree. I can't picture your
> set-up, but I wonder if something like this would help. Pricey, but
> ingenious.
> http://www.nn4zz.com/tiltplate.htm
> I have the trombone ordered, so I could comment on its performance in a
> couple of months. Download a copy of the manual from the SteppIR site.
> 
> New toys are a great spirit boost!
> 
> 73, Mike NF4L
> 
> Terrence R. Redding Ph.D. wrote:
>> 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 at contesting.com"
>> <towertalk-request at contesting.com> wrote:
>> 
>>   
>>> Message: 7
>>> Date: Mon, 13 Jul 2009 09:05:08 -0400
>>> From: Mike <nf4l_NO_SPAM at nf4l.com>
>>> Subject: Re: [TowerTalk] TH3MKII vs 3 element SteppIR
>>> To: "Terrence R. Redding Ph.D." <terry at oltraining.com>
>>> Cc: towertalk at contesting.com, David Byrd <DGBYRD at aol.com>
>>> Message-ID: <4A5B3104.2090409 at 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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