[Elecraft] Antenna suggestions, resent

[KD8NNU]

Look up a cobweb antenna, it's a folded dipole design that works quite well.  I built one and I really like the performance.

Thanks
Don
Sent from my iPad

On Sep 28, 2013, at 5:01 PM, Edward R Cole <kl7uw at acsalaska.net> wrote:

> Vic,
> 
> Too bad you cannot consider a yagi for 20-10m.  That would sit on a mast secured to the small roof-top building.  So a  30x 10 foot space?  I wonder if the 20x10 foot building extends beyond the 30x20 area?
> 
> It it extends so total length is 50-feet  You could put up a doublet across the length, either horizontal with 8 foot droop on both ends for full length half-wave on 40m or perhaps a pole in the center for inverted-V.   Another idea is 50-foot with 8-foot                legs at right angles but horizontal at the same height.  Or consider a 120-foot horizontal loop if there are places for four support poles.  Being on roof of ten stories means the wire does not need to be very high.
> 
> An automatic tuner at the roof would finish off any multiband antenna with single coax run to shack. To add 6m/2m simple solution is a base-loaded 5/8 6m wave vertical (could be a mobile whip).  They load fine on 2m as well (trick of VHF mobile stations).
> 
> 73, Ed - KL7UW
> ----------------------
> Date: Fri, 27 Sep 2013 21:47:41 -0700
> From: "Vic, K2VCO" <k2vco.vic at gmail.com>
> To: elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] Antenna suggestions, resent
> Message-ID: <52465F6D.9060505 at gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> I just realized that my previous message was sent in html format. Which
> means that the reflector stripped the text! That explains some of the
> answers...
> 
> Here is what I meant to ask:
> ----------------------------------------------------------------------
> 
> I am moving to an apartment on the top floor of a 10 story building. I
> have access to the roof which has a 30' x 10' flat space. On one edge of
> this space is a building 9' high with a flat roof of about 10' x 20'. I
> can put up antennas on top of this little building and on the flat area
> mentioned above.
> 
> But there is a catch: the antenna has to be either a wire antenna, or
> substantially vertical. If vertical, it can't exceed 29' in height above
> the roof of the small building. Beams not allowed!
> 
> I want to operate on 40 through 15 meters. The antenna needs to be able
> to handle 1500w.
> 
> I prefer horizontal antennas because of the extra gain and lower noise
> pickup. I prefer a balanced antenna because of noise and RFI
> considerations. But I'll consider other options if there are overriding
> advantages.
> 
> Suggestions
> 
> 
> 73, Ed - KL7UW
> http://www.kl7uw.com
> dubususa at gmail.com
> "Kits made by KL7UW" 
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