OK thanks Paul
how can you measure that a radial system is still good over the years?
Maybe the cable is degraded, or is cutted in some points if animals are
around.
Is any easy way to determine that the radial system on a vertical antenna
is still good?
thanks!
Jorge
CX6VM/CW5W
El vie, 2 dic 2022 a las 12:06, Paul Christensen (<w9ac@arrl.net>) escribió:
> Jorge,
>
> N6LF's material is based largely on measured results in support of
> theory.
>
> Paul, W9AC
>
> -----Original Message-----
> From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Jorge
> Diez - CX6VM
> Sent: Friday, December 2, 2022 9:57 AM
> To: Paul Christensen <w9ac@arrl.net>
> Cc: Ignacy Misztal <no9e@arrl.net>; tower and HF Antenna Construction
> Topics. <towertalk@contesting.com>
> Subject: Re: [TowerTalk] 16om vertical and the number of radials
>
> I think Paul wants to know the "real" situation, not theory. He want to
> know if the theory is 100% in accordance with real big stations with many
> radials on the antennas
>
> 73,
> Jorge
> CX6VM/CW5W
>
> El vie, 2 dic 2022 a las 11:50, Paul Christensen (<w9ac@arrl.net>)
> escribió:
>
> > Ignacy,
> >
> > There's a lot of published information that addresses your question.
> > Some material is rooted in commercial applications and even more in
> > the amateur literature where modeling is compared with measured results.
> >
> > As a starting point, I would carefully read Rudy Stevens' material:
> >
> > https://www.antennasbyn6lf.com/design_of_radial_ground_systems/
> >
> > Paul, W9AC
> >
> > -----Original Message-----
> > From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Ignacy
> > Misztal
> > Sent: Friday, December 2, 2022 9:25 AM
> > To: tower and HF Antenna Construction Topics.
> > <towertalk@contesting.com>
> > Subject: [TowerTalk] 16om vertical and the number of radials
> >
> > Do more radials on a 160m vertical bring more improvements than shown
> > by simulation?
> >
> > Most simulations show that going above 32 radials on 160m brings
> > minimal improvement, say 1 db to 2 max. Even for low angle signals.
> >
> > On the other hand, some really loud stations n 160m, say 5-10 db above
> > the crowd, use a massive amount of radials. This is for inland
> > stations, far away from salt water.
> >
> > Is there any discrepancy between modeling and real life performance
> > with the number of radials? Does adding radials beyond 32 help much?
> > Any real stories?
> >
> > Ignacy NO9E
> > _______________________________________________
> >
> >
> >
> > _______________________________________________
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> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
> > _______________________________________________
> >
> >
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
>
>
> --
> 73,
> Jorge
> CX6VM/CW5W
> _______________________________________________
>
>
>
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>
>
--
73,
Jorge
CX6VM/CW5W
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