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> 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 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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