[600MRG] For discussion: Re: Top loading a vertical on LF/MF

[D.J.J. Ring, Jr.]

Neil,

WSC, Tuckerton NJ Radio used a sloping top-hat on its 200 foot Tohn 45
guyed base fed insulated base terminating at above 60 feet above ground at
tied at that point with a wire making a circle.

Best DX was in the Pacific off Ecuador.

Unlike WSL and WCC we could not work WLO WNU and KLC at night.  We could
work WCC, NMF (Boston), NMN in VA and VAU in Yarmouth, NS, and probably NMA
Miami at night.

Such sloped top hat was a standard installation on 500 kHz.

73

DR
 On Nov 27, 2013 6:18 PM, "Neil Klagge" <w0yse.7 at gmail.com> wrote:

>  To the 600m gang:
> The reason for initiating this discussion is that, for me and perhaps
> others, it is not feasible or possible to add top loading wires to a 630m
> vertical without sloping the load wires downward a considerable amount.
>
> I know that when an antenna is “folded back on itself” there is
> cancellation of some of the radiation from the antenna. This is certainly
> the case for top loading wires that reach toward the ground down to less
> than half of the height of the vertical section.
>
> The question I find myself asking is this: “Is what I will gain in ERP
> worth the effort it takes to add sloping top wires because of the
> cancellation that will occur.” I wonder if 1 or 2 dB gain is worth it at
> the receiving end.
>
> I would be interested in feedback from those who have any experience with
> both situations: Namely, top loaded verticals and “topless” verticals  ;-)
>
> 73, Neil Klagge, WG2XSV, W0YSE
>
>
> --
> *"I use the original form of social networking, Amateur Radio." *
>               *(my ham radio site is at 'w0yse.webs.com
> <http://w0yse.webs.com/>' )*
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