Re: Topband: 160M loading coil mounting/orientation

[Bill Cromwell <wrcromwell@gmail.com>]

The ones I have seen in mobile installations have the (rather large) 
coil mounted at the bottom of the vertical element with the vertical 
element rising up through the coil. So it's a coaxial arrangement with 
the coil outside and the vertical element inside. It sure seemed to work 
in that location.
73,

Bill  KU8H

On 09/08/2014 09:06 AM, shristov wrote:
> rich kennedy via Topband <topband@contesting.com> wrote:
>
> > When base-mounting a loading coil (inductor) on a shortened
> > monopole vertical, is there a preferred method for the physical
> > placement of the coil?  Is it better to orient the coil in
> > the vertical axis, horizontal axis; very close to the radiator
> > element or a number of feet away; positioned close to ground
> > level or elevated (such as on a mounting post ~ 3 feet above ground)?
> > Assume freq = 1.83 mHz; H = 70 feet aluminum; soil = average to
> > good; small capacitive hat (spokes, 5’ diameter).
> Orientation doesn't matter.
>
> Place it as you would place any other inductor,
> i.e. 1-2 coil diameters away from other metallic objects, and from soil.
>
> Protect it from elements, and that's it.
>
> 73,
>
> Sinisa  YT1NT, VE3EA
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