Re: Topband: TopBand DownUnder

2021-09-14 Thread MICHAEL ST ANGELO
I remember the Slinky's being copper plated. I wonder if the skin depth lowered losses on 160 meters. Mike N2MS > On 09/14/2021 9:33 PM W0MU Mike Fatchett wrote: > > > I have a drawer full of slinky's the steel version.  I recall that > someone was making slinky beverages for people that

Re: Topband: TopBand DownUnder

2021-09-14 Thread W0MU Mike Fatchett
I have a drawer full of slinky's the steel version.  I recall that someone was making slinky beverages for people that could not stretch out 300 plus beverages.  I never got around to making one.  Maybe the slinky's are collector items now and I can get my money back!  HI! W0MU On 9/14/2021

Re: Topband: TopBand DownUnder

2021-09-14 Thread Grant Saviers
A bad idea when the Slinky is steel. Helical wound copper wire antennas do work, for TB we used a wound vertical on a FG pole at H40TT. It was amazing to me that EZNEC will auto generate a helix wire of arbitrary dimensions, pitch, and segmentation. Grant KZ1W On 9/14/2021 15:45, Mark -

Re: Topband: TopBand DownUnder

2021-09-14 Thread 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,

Re: Topband: TopBand DownUnder

2021-09-14 Thread Tree
Maybe I will beat W6DGH to this... WB6ZKK was pushing barb wire dipoles. On Tue, Sep 14, 2021 at 3:37 PM Mark - N5OT 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. > >

Re: Topband: TopBand DownUnder

2021-09-14 Thread Mark - N5OT
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

Re: Topband: TopBand DownUnder

2021-09-14 Thread Grant Saviers
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

Re: Topband: TopBand DownUnder

2021-09-14 Thread Mark - N5OT
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, w3...@roadrunner.com wrote: Been reading the encouraging posts. So, I got up and heard good activity, working: VK3HJ -

Topband: TopBand DownUnder

2021-09-14 Thread W3HKK
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. (