Topband: TopBand DownUnder

[Mark - N5OT]

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 at n5ot.com 
> <mailto:r-emails at 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 at roadrunner.com
>     <mailto:W3HKK at 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.
>     >>>
>     >>>
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