[TowerTalk] verticlas used on multiple bands fed with a tuner

[David Jordan]

Does anyone have a reference study of the QSO-KING 124ft end-fed wire
antenna?  We played with one this weekend and was surprised how well it
heard and was heard on 40 and 60m. 

73,
Dave
Wa3gin

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Dan Hearn
Sent: Tuesday, November 15, 2011 11:59 AM
To: Mark Beckwith
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] verticlas used on multiple bands fed with a tuner

Mark: If you would like to read a discussion of the good and bad points of
the 43 ft vertical go to www.sdxa.org and click on "articals". The VK link
actually puts numbers on the efficiency on various bands. A  quick summary
is that it is a fair antenna on 20 and 40. On the lower bands its extremely
low feed point Z makes it very inefficient and the tuner needs to be at the
base. Above 40 it is a cloud warmer with high angle radiation. Have you
thought about a fan dipole?


On Tue, Nov 15, 2011 at 4:53 AM, Mark Beckwith <n5ot at n5ot.com> wrote:

> Very fine, gents.  Thanks.  Much appreciated.  More information:
>
> I will be taking a vacation to Belize and will be there for the CQWW CW
> contest.  I will take a 100W radio with an external tuner.  I will have
two
> 40 foot spiderbeam telescoping fiberglass poles I will be able to attach
to
> piers over the calm ocean, and I would like to be able to make QSOs on all
> bands.  I should have no problem laying out maybe two radials for each
> band,
> thinking something like 12 radials everywhere from a quarter wave on 160m
> to
> a quarter wave on 10m.  The longer radials might need to get folded around
> or use other creative ideas.
>
> I can make two antennas - or alternatively I can run different wires for
> different bands up the same pole as long as they are chosen to not
> particularly interact, and run separate feedlines.  I will be using RG6 75
> ohm coax.
>
> I can smoketest them here at N5OT but not with the salt water component.
>
> The tuner's specifications say it will tune 4 to 800 ohm loads.
>
> I hope this helps focus the brainstorming.
>
> Quick dumb question - This magic 43 foot vertical: That's just 43 feet of
> vertical radiator fed against a ground system?  Any additional loading?  I
> never paid attention to that conversation before.  Bad me.
>
> 73 - Mark N5OT
>
>
> ----- Original Message -----
> From: "WA8JXM" <wa8jxm at gmail.com>
> To: <john at kk9a.comjohn@kk9a.com>
> Cc: <towertalk at contesting.com>
> Sent: Monday, November 14, 2011 4:44 PM
> Subject: Re: [TowerTalk] verticlas used on multiple bands fed with a tuner
>
>
> > You guys are talking apples and oranges:
> >
> > On Nov 14, 2011, at 5:04 PM, <john at kk9a.com> <john at kk9a.com> wrote:
> >
> >> The average vertical has very little low radiation angle, unless next
to
> >> salt water which fills in the pseudo Brewster angle.   I think most of
> >> the
> >> time you are better off with a horizontal antenna .
> >>
> >> From: "Gene Fuller" <w2lu at rochester.rr.com>
> >>
> >> A GOOD vertical antenna is perhaps the easiest way to get the low
> >> radiation
> >> angle you would like for DX'ing.
> >
> >
> > One of you is speaking about the "AVERAGE VERTICAL" and the other is
> > speaking of a "GOOD VERTICAL":
> >
> > Those aren't the same things, guys!
> >
> > Ken
> > _______________________________________________
> >
> >
> >
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-- 
Dan Hearn
N5AR
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