[Elecraft] On ground - in ground radials

[George Danner]

Mike,
When I was an AM radio broadcast engineer in the 60s & 70s, we used a
copper screen for the first 20' to 50' around the tower base and silver
soldered all the 1/4 wavelength radials to the common point straps and
several places along the screen. This was in Florida with sandy soil. I
seemed to remember from my 1st Phone exam that 120 radials were required.
73 George AI4VZ

On Mon, Jan 17, 2022 at 11:23 AM Mike Fatchett <w0mu at w0mu.com> wrote:

> A well known 9 lander lid uses chicken wire for his 160 antenna and it
> works very very well.  I am not sure what effect crossing the wires
> has.  Has anyone done any real testing of this or is it just theory or a
> wives tale?  Did he stumble upon the holy grail of radials?
>
> Most of the results of the radial field are from the first 50 percent or
> so.  You do not necessarily have to have 66 ft radials on 80m to work
> and get out.  Put out as many as you can as long as you can and shorter
> radials are fine too.
>
> W0MU
>
> On 1/16/2022 2:15 PM, Dave Fugleberg wrote:
> > This discussion reminded me of a question that I’ve often wondered about
> > but have never asked.
> > I have read that when laying out radials on or under the ground, one
> should
> > be careful to ensure that they radiate out from a central point without
> > ever crossing one another.
> >
> > I have also read about this idea of using galvanized mesh in place of a
> > traditional radial field. In a mesh, the conductors not only cross, but
> are
> > bonded together at every crossing.
> >
> > So, is there actually an issue if a couple radials happen to cross each
> > other?
> >
> > Not that one would do so on purpose, but when adding radials to a system
> > where the existing ones are no longer visible, it could easily happen…
> >
> > Curious minds want to know.
> >
> >
> > On Sun, Jan 16, 2022 at 2:55 PM Jim Brown <jim at audiosystemsgroup.com>
> wrote:
> >
> >> On 1/16/2022 12:19 PM, Mike Markowski wrote:
> >>> A construction site had left over galvanized mesh rolls that I bought
> at
> >>> great discount.  I unrolled them symmetrically about my then soon-to-be
> >>> installed vertical.  Easier than individual for lazy hams like me:-)
> and
> >>> 2nd qso at 100W from Pennsylvania was Cambodia!  That qso made my day
> and
> >>> then some.
> >> Rob Sherwood, KC0B, published on this in the May 1977 edition of "Ham
> >> Radio," and I included his ideas in this talk.
> >>
> >> http://k9yc.com/160MPacificon.pdf
> >>
> >> 73, Jim K9YC
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