Topband: Let's try stuff

[Mike]

I have that issue here somewhere, Tom. It was interesting (and
not too surprising) to note the PY station's observation that signal
strengths improved significantly when he connected conventional
radials in parallel with the underground vertical counterpoise in the
insulated pipe.

73 de Mike, W4EF............

----- Original Message -----
From: "Tom Rauch" <w8ji@akorn.net>
To: <topband@contesting.com>; "Steve Ireland" <sire@iinet.net.au>
Sent: Saturday, February 16, 2002 11:01 PM
Subject: Re: Topband: Let's try stuff


> Hi Steve,
>
> > consider Tom). The article doesn't actually say a couple of radials
> > with a loading coil (i.e. a tuned counterpoise) is better than a
> > full-sized ground screen, but that you can get much better performance
> > with it than with the randomised radial systems we sometimes use on
> > the low-bands - and with much less effort.
>
> The article actually states when radials are shortened and a
> loading coil is added, current in the radials is more evenly
> distributed and efficiency improves over (larger) systems with
> resonant radials. I've seen several articles repeating that claim, all
> referring to an original article in Communications Quarterly. Yet no
> one, from the original author onwards, ever measured field strength.
>
> In another section of that same magazine, another author claims a
> insulated pipe bored 1/4wl deep into the earth allows him to have a
> lossless "vertical dipole", with the wire going vertically down into
> the earth being the other leg of his dipole. Some people will
> actually would believe that, since they saw it in print, and will quote
> that in future articles.
>
> With that in mind, I agree with you Steve. We should try stuff.
> Hopefully we will do that in some logical scientific manner (it does
> not need to be a complicated test) before we publish a project or
> offer a theory or explanation!
> 73, Tom W8JI
> W8JI@contesting.com
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