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Re: Topband: TopBand DownUnder

To: TopBand List <topband@contesting.com>
Subject: Re: Topband: TopBand DownUnder
From: Mark - N5OT <r-emails@n5ot.com>
Date: Tue, 14 Sep 2021 17:45:51 -0500
List-post: <mailto:topband@contesting.com>
Okay then, who was making dipoles out of slinkys?  Barbed wire is not germane to a discussion of either accordion inductors or Tornado Tuners.

Back on topic, I re-read K9YC's presentation about 160 meter transmitting antennas, and it was good to be reminded of so many things.  A fun fact is, I had no idea I live on the most conductive ground on the map of the USA.  That explains many things.  Lucky me!

73 - Mark N5OT

On 9/14/2021 5:39 PM, Tree wrote:
Maybe I will beat W6DGH to this...

WB6ZKK was pushing barb wire dipoles.

On Tue, Sep 14, 2021 at 3:37 PM Mark - N5OT <r-emails@n5ot.com <mailto:r-emails@n5ot.com>> wrote:

    When I was a kid, we had a guy WB6ZKK who touted dipoles made of
    slinkys.  I am thinking some of the same electronic theory and design
    must have come into play.

    Tree will remember.  Long live the old NTS.

    73 - Mark N5OT


    On 9/14/2021 5:21 PM, Grant Saviers wrote:
    > I've not heard the term "accordian" applied, but the Tornado Tuner
    > expands and compresses a coil inside some pvc pipe to change L
    about
    > 2:1.  I have one (split) to tune the full 80m band at the center
    of an
    > 86ft rotatable dipole.  Your choice of Al or Cu coil tubing with a
    > small Portescap gearhead motor driving a delrin (I think) leadscrew
    > screw and reed switch for turns counting.
    >
    > JKantennas makes an yagi with a Tornado.  Rumor has it a 3L 80m was
    > built with them for full band coverage.
    >
    > Originally, mostly used for tuning/loading verticals.  No sliding
    > contacts makes it quiet and reliable.  I used an MFJ screwdriver
    > control with 10 pushbutton 50KHz spaced presets for 80m but now
    have a
    > RT21dc automatically tracking frequency to preset coil positions.
    > GHeverywhere does the mapping.
    >
    > Grant KZ1W
    >
    > On 9/14/2021 12:54, Mark - N5OT wrote:
    >> Wait.  There's such a thing as an "accodion inductor"?  I
    thought I
    >> knew everything.
    >>
    >> I'll be glad when mowing season is over, too.
    >>
    >> 73 - Mark N5OT
    >>
    >>
    >> On 9/14/2021 2:44 PM, W3HKK@roadrunner.com
    <mailto:W3HKK@roadrunner.com> wrote:
    >>> Been reading the encouraging posts. So, I got up and heard good
    >>> activity, working:
    >>> VK3HJ - ZL1AZ - VK2WR at Ohio SR and up to 20 minutes after,
    when the
    >>> band faded out.
    >>>
    >>> Gud to hear Luke, Dennis and Adrian coming through so well,
    through
    >>> moderate QRN. Unusually warm temps here for mid Sep. ( 85-88F)
    I took
    >>> an hour last week to tweak the 52' tall 1/4 wave INV-L. All 26
    radials
    >>> are still coiled up and hanging from the walnut tree, until lawn
    >>> mowing season ends in mid Oct. Then I will uncurl them and retune
    >>> accordion inductor.
    >>>
    >>> Heard AA1K this morning as well.
    >>>
    >>>
    >>> _________________
    >>> Searchable Archives: http://www.contesting.com/_topband
    <http://www.contesting.com/_topband> - Topband
    >>> Reflector
    >>
    >> _________________
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    >> Reflector
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    > Reflector

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