RF in the Trees

This is how we feel about the plant world:

*"John Barleycorn"*

There were three men came out of the West,
Their fortunes for to try,
And these three men made a solemn vow:
John Barleycorn must die.

They've ploughed, they've sown, they've harrowed him in,
Threw clods upon his head,
And these three men made a solemn vow:
John Barleycorn was dead.

They've let him lie for a very long time,
Till the rains from heaven did fall,
And little Sir John sprung up his head,
And so amazed them all.

They've let him stand till midsummer's day,
Till he looked both pale and wan,
And little Sir John's grown a long, long beard,
And so become a man.

They've hired men with the scythes so sharp,
To cut him off at the knee,
They've rolled him and tied him by the way,
Serving him most barbarously.

They've hired men with the sharp pitchforks,
Who pricked him to the heart,
And the loader he has served him worse than that,
For he's bound him to the cart

They've wheeled him around and around the field,
Till they came unto a barn,
And there they made a solemn oath,
On poor John Barleycorn.

They've hired men with the crab-tree sticks,
To cut him skin from bone,
And the miller he has served him worse than that,
For he's ground him between two stones.

And little Sir John and the nut-brown bowl,
And he's brandy in the glass;
And little Sir John and the nut-brown bowl,
Proved the strongest man at last.

The huntsman, he can't hunt the fox,
Nor so loudly to blow his horn,
And the tinker he can't mend kettle nor pot,
Without a little Barleycorn

With apologies to Traffic :)
     73,
         Kevin.  KD5ONS


On 6/27/2014 11:18 AM, Edward R Cole wrote:

> http://w5jgv.com/tree_antenna/index.htm
>
> Ralph is the ham I was referring to.  Now you have as much as I am
> aware of.  I forgot that Ralph wound a torus around the tree base.  He
> used an old oak which brings song to mind "tie a yellow ribbon around
> that ole oak tree...".
>
> The question about whether the tree feels the electrical field gets
> into the whole earth realm of whether flora feel as much a fauna?  I
> would say, "yes".  The tree probably feels "excited with an
> electrifying experience!" :-D
>
> Long term effects on the health of a tree is probably unknown. Mankind
> generally does not have much empathy for the plant world. We grow it
> and we harvest it for food or shelter.
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
>     "Kits made by KL7UW"
> Dubus Mag business:
>     [hidden email]
>
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[Jim Bennett]

Doug - I've been using an 88 foot long doublet at 45 feet for about four years - works very, very well on 40-6 meters. It tunes on 80 but I have an inverted L I use there. Currently I feed it with about 110 feet of 450-ohm ladder line and a Current Designs 4:1 balun, and then about ten feet of RG-8X into the shack. My only complaint is that the SWR jumps all over the place when it's raining, which it normally does here in this part of the state in the winter. I may go back to 600-ohm open wire line later this summer. But other than that, the 88-foot doublet is a good performer. BTW - mine is made out of #26 "silky coat" wire from The Wireman in SC - I have to keep it "stealthy", but have no problem running 500w to it from my Elecraft K3/KPA500.

Jim / W6JHB
Folsom, CA


On   Friday, Jun 27, 2014, at  Friday, 10:40 AM, Doug Person via Elecraft wrote:

> ........
>
> Now I'm thinking of what would be the best "all-band" antenna for the K2 which is my secondary operating position in the living room where I can give demos to visitors.  I'm thinking of giving the 88 foot doublet fed with 300 ohm twinlead a try.
>
> Doug -- K0DXV

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[JHRichards]

This guy comae up with a variation on the OCF Dipole that matches well
on many bands and has been field tested in contests by a station in
Germany.  Lightweight, low profile, durable, especially good for QRP or
field day operations.

Maybe it will give you an idea or two... I understand the developer
spent countless hours modeling, testing, re-modeling, re-testing, etc.,
until he got the right feed point offset to maximize low SWR on multiple
bands, as if looking for the holy grail of antennas.

http://www.aerial-51.com/

I have no financial interest in any of it, but if the balun comes potted
in epoxy, it was kinda my idea ...   ;-)

--------------------  K8JHR ----------------------


On 6/27/2014 1:40 PM, Doug Person via Elecraft wrote:

> Now I'm thinking of what would be the best "all-band" antenna for the K2
> which is my secondary operating position in the living room where I can
> give demos to visitors.  I'm thinking of giving the 88 foot doublet fed
> with 300 ohm twinlead a try.
>
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[bdenley]

I also have one of their fan dipoles: full size 40, full size 20 with coils and more wire on the ends that gives me shortened 80.  Excellent quality!  Great price.

Brian KB1VBF

Sent from my iPad

> On Jun 27, 2014, at 6:16 AM, Gerry leary <[hidden email]> wrote:
>
> Thanks very much for showing me HYpower Anntennas.  They look very interesting, and I am going to call them with questions.  Gerry
>
> Sent from my iPhone this time
>
>> On Jun 26, 2014, at 9:39 AM, Walter Underwood <[hidden email]> wrote:
>>
>> For pre-built antennas, HyPower is a good choice. He has lots of options, fan dipoles, loaded dipoles, even combinations. I have a fan dipole made from a full-size 40m element and an element that is full-size for 80 and loaded for 80. He also sells the loading coils if you would rather DIY.
>>
>> http://www.hypowerantenna.com/
>>
>> wunder
>> K6WRU
>>>>>

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[Eric Swartz - WA6HHQ]

End of thread.

In the future, please self moderate and end threads as quickly as possible in the interest of better list SNR.

73,

Eric
Modulator
elecraft.com
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[Eric Swartz - WA6HHQ]

Hi Jim,

This thread has been closed. Please take further discussion off list in the
interest of reducing list overload for others.

73,

Eric
elecraft.com

On 6/28/2014 9:32 AM, Jim Brown wrote:
> On 6/27/2014 6:30 AM, Don Wilhelm wrote:
>> if you can couple RF into it, it will radiate.
>
> Yes. There are many ways to feed a vertical dipole. I developed a method that
> uses the outside of the coax as half of the dipole, and uses a ferrite choke
> to form the "end insulator." The choke is positioned a quarter wave down the
> coax from the center insulator.
>

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