[K3CAL] Help with an antenna project

[N3AE]

Tom,

The R9 is a bit top heavy and has a lot of "stuff" near the top to catch the wind.  I'd recommend some guys or a support off that balcony.  Search R9 vertical on YouTube for some videos.

I tend to agree with Brian....3ft deep and 1.5 to 2 ft in diameter.   Depth is more important than diameter in the case because it's overturning moments and not weight that you are trying to resist.

Also recommend a stout mast.  Water pipe steel probably not good enough unless you have guys.  The R9 manual has the minimum and maximum mast diameter for the antenna.

Shawn
N3AE


----- Original Message -----
From: Thomas Rozenbroek <kb2bcg at arrl.net>
To: KB3WFV <kb3wfv at yahoo.com>, Calvert Amateur Radio Association - K3CAL <k3cal at mailman.qth.net>, rterlisner at gmail.com
Sent: Fri, 03 Jul 2015 22:17:00 -0000 (UTC)
Subject: Re: [K3CAL] Help with an antenna project

Brain, Dick, and the group.

Thanks for the insight and responses.

I agree with the 36 inch depth for a frost line and was also thinking 24 
inches was about right.

Off the Home Depot for sakrete and pipes, now that I know what I need.

73s

kb2bcg
-----

On 7/3/2015 4:26 PM, KB3WFV via K3CAL wrote:
> Tom
>
> I figure that antenna to be much like a flag pole.
> So I googled "how much concrete for a flag pole"
>
> And came up with this
>
> http://www.admiralflagpoles.com/resources_instructions_residential_flag_poles.htm
>
> Looks to me a 30 foot pole needs a hole 36 inches deep and 24 inches in diameter
>
> Here is a link to sakrrete (the concrete in the bag folks) website with lots of calculators on it
>
> http://www.sakrete.com/
>
> Brian K
> KB3WFV
>
> --------------------------------------------
> On Fri, 7/3/15, Thomas Rozenbroek <kb2bcg at arrl.net> wrote:
>
>   Subject: [K3CAL] Help with an antenna project
>   To: "Calvert Amateur Radio Association - K3CAL" <k3cal at mailman.qth.net>
>   Date: Friday, July 3, 2015, 10:43 AM
>   
>   Good Morning,
>   
>   Thank you for an enjoyable
>   field day experience.  Between the good
>   friends, good foods and good contesting, it was
>   an enjoyable weekend.
>   
>   Getting back to ham radio, I am putting up a
>   Cushcraft R9 at the home
>   QTH.  I plan to
>   put the R9 on top of roughly 12 foot high mast with a
>   concrete base.  After checking the web, the
>   ARRL website and the
>   instructions that came
>   with the antenna, I still can not find any
>   information on how large to make the concrete
>   base.  Because of where
>   the antenna will
>   be placed, I am not expecting to guy it.  The location
>   is fairly well shielded from high cross
>   winds.  However, if need be I
>   will add a
>   horizontal support off of a balcony that is about 20 feet
>   
>   above grade.
>   
>   If anyone has any thoughts on the size of the
>   concrete base or can
>   direct me to where I
>   can get information on how large it should be, it
>   would be appreciated.
>   
>   73s,
>   
>   kb2bcg
>   -----
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