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@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@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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>>
>>
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