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

Mark Beckwith n5ot at n5ot.com
Tue Nov 15 04:53:53 PST 2011

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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