[K3CAL] Help with an antenna project

[kf3aa at comcast.net]

Attaching fins to buried part of mast has been done to give more 
resistance to tilting and twisting . 

----- Original Message -----

From: "N3AE" <n3ae at comcast.net> 
To: "Calvert Amateur Radio Association - K3CAL" <k3cal at mailman.qth.net> 
Sent: Friday, July 3, 2015 9:47:39 PM 
Subject: Re: [K3CAL] Help with an antenna project 

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 
>   ----- 
>   ______________________________________________________________ 
>   K3CAL mailing list 
>   Home: http://mailman.qth.net/mailman/listinfo/k3cal 
>   Help: http://mailman.qth.net/mmfaq.htm 
>   Post: mailto:K3CAL at mailman.qth.net 
>   
>   This list hosted by: http://www.qsl.net 
>   Please help support this email list: http://www.qsl.net/donate.html 
>   
> ______________________________________________________________ 
> K3CAL mailing list 
> Home: http://mailman.qth.net/mailman/listinfo/k3cal 
> Help: http://mailman.qth.net/mmfaq.htm 
> Post: mailto:K3CAL at mailman.qth.net 
> 
> This list hosted by: http://www.qsl.net 
> Please help support this email list: http://www.qsl.net/donate.html 
> 

______________________________________________________________ 
K3CAL mailing list 
Home: http://mailman.qth.net/mailman/listinfo/k3cal 
Help: http://mailman.qth.net/mmfaq.htm 
Post: mailto:K3CAL at mailman.qth.net 

This list hosted by: http://www.qsl.net 
Please help support this email list: http://www.qsl.net/donate.html 

______________________________________________________________ 
K3CAL mailing list 
Home: http://mailman.qth.net/mailman/listinfo/k3cal 
Help: http://mailman.qth.net/mmfaq.htm 
Post: mailto:K3CAL at mailman.qth.net 

This list hosted by: http://www.qsl.net 
Please help support this email list: http://www.qsl.net/donate.html 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/k3cal/attachments/20150704/77d0ebf4/attachment-0001.html>