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Re: Topband: What antenna would you build?

To: topband <topband@contesting.com>
Subject: Re: Topband: What antenna would you build?
From: Mike Waters <mikewate@gmail.com>
Date: Fri, 25 Mar 2022 13:47:22 -0500
List-post: <mailto:topband@contesting.com>
I asked about the land dimensions and orientation mostly for determining
what his receiving antenna options are.

73 Mike
W0BTU

On Fri, Mar 25, 2022, 1:43 PM Charlie <k1xx@k1xx.com> wrote:

> Sorry folks, I don't totally agree.  Granted, this may be a bit of
> semantics.  But, for the last  3 or 4 years we've used what's  known as a
> Double L on 160 at PJ4K.  The top's about 130 feet with the vertical
> section running down to 30 feet.  The feed points at about 85 feet which is
> a bit of a PITA for making measurements.  Is half of this bent 1/2-wave
> dipole the great ground system?  You guys can argue the point.
>
> However, this is a very effective transmitting antenna.  So good, in fact,
> that we just finished phasing a second identical Double L with the first
> one.
>
> I do agree that you can't work 'em without hearing them.  Hence the reason
> for our pair of w1fv circular arrays.
>
> 73 Charlie, k1xx current putting up antennas at PJ4A
>
>
> On March 25, 2022 2:16:09 PM AST, Jim Brown <jim@audiosystemsgroup.com>
> wrote:
> >YES!  This is VERY important advice, trumps all else.
> >
> >And I echo those who have advised to build one vertical radiator with an
> >excellent radial system, and the best RX antenna system that will fit on
> >your property. Most of the arrays others have suggested are not
> >practical on five acres, if for no other reason that a GREAT radial
> >system for each element is critical.
> >
> >73, Jim K9YC
> >
> >On 3/25/2022 10:19 AM, Mike Waters wrote:
> >> This is a great piece of advice!!! I would add: check those QRN levels
> at
> >> various times and on different days.
> >>
> >> 73 Mike
> >> W0BTU
> >>
> >> On Fri, Mar 25, 2022, 10:01 AM Fred Kleber <kleberf@bellsouth.net>
> wrote:
> >>
> >>>
> >>> ... before you even make an offer on a piece of property, go there
> with a
> >>> mobile receiver and check to see what the ambient QRM level is.  We
> have
> >>> already read in this group about this very subject from a ham that is
> >>> unable to use 160m due to the QRM from pot house grow lights some 3/4
> miles
> >>> away.  LED lighting is a well known source of QRM.
> >>>
> >>> Certain types of TVs and even solar power inverters can cause
> horrendous
> >>> amounts of QRM which can render top band useless.  It is interesting to
> >>> note that there are no FCC  spurious emissions requirements for solar
> power
> >>> equipment.
> >>>
> >> _________________
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> Reflector
> >
> >_________________
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> Reflector
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>
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