Message-ID: <5B641D6C.9010406@posteo.de>
Date: Fri, 03 Aug 2018 11:16:28 +0200
From: DK7FC <selberdenken@posteo.de>
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In-Reply-To: <5e87785f-6799-a04e-316a-9c1b27d7f5df@web.de>
Subject: Re: VLF: Earth antenna transmissions on a guide rail?!?? 2nd day...
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Hello Eike,


Am 02.08.2018 17:53, schrieb Eike DL3IKE:
> Stefan wrote: "My wire is already ordered and payed anyway ( 
> https://www.pollin.de/p/lautsprecherkabel-2x0-75-mm2-100m-transparent-cca-562602 
> ) "
>
> Ah, this wire is 100% CCA, which means 100% "Copper Cladded Aluminum".
AArgh, such a FAKE! I didn't know what CCA means and didn't spend much 
attention to these 3 characters. I think the seller should have 
explained what CCA means! Why are they producing Alu-wire with a copper 
layer? Because of the Millions of radio amateurs requesting it? Or, 
maybe, because they want to sell it as pure copper?
I'm angry that there is no information on the website. I should send it 
back to them! ...and buy something real. At least i will call them as 
tell them what i think about this practice.

Aluminium will also have poor mechanical behaviour i fear, maybe it 
breaks after some experiments?

>   It is lightweight and has good RF conductivity.
Well, maybe on the upper HF bands it doesn't matter, skin effect...,  
but not down below 9 kHz!

The resistance will be about 1.5 times higher, i.e. i will have a 
further 10 Ohm in the loop :-(
That means i have to spend another 10 W at 1 A antenna current and 40W 
at 2 A antenna current.

What now, all the stuff is already prepared for the weekend. If i send 
it back then i can do nothing this weekend. But i like to! And live is 
to short to waste time. At least i will reduce the losses from 175 Ohm 
to 80 Ohm, which means i will gain 3.4 dB. But it could have been 4 dB!


> I used it for my kite-antenna, see my page on qrz.com
OH, i know that kite! :-) A nice site. I see you are someone active, not 
only sitting in front of the monitor :-)
That 135m high tower, can you install an antenna from there, a sloper, 
for LF or so?

73, Stefan

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Hello Eike, <br>
<br>
<br>
Am 02.08.2018 17:53, schrieb Eike DL3IKE:
<blockquote cite="mid:5e87785f-6799-a04e-316a-9c1b27d7f5df@web.de"
 type="cite">
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <div class="moz-cite-prefix">Stefan wrote: "My wire is already
ordered and payed anyway (
  <a moz-do-not-send="true" class="moz-txt-link-freetext"
 href="https://www.pollin.de/p/lautsprecherkabel-2x0-75-mm2-100m-transparent-cca-562602">https://www.pollin.de/p/lautsprecherkabel-2x0-75-mm2-100m-transparent-cca-562602</a>
) "<br>
  <br>
  <pre class="tw-data-text tw-ta tw-text-small"
 data-placeholder="Übersetzung" id="tw-target-text"
 style="text-align: left; height: 144px;" data-fulltext="" dir="ltr"><span
 lang="en">Ah, this wire is 100% CCA, which means 100% "Copper Cladded Aluminum".</span></pre>
  </div>
</blockquote>
AArgh, such a FAKE! I didn't know what CCA means and didn't spend much
attention to these 3 characters. I think the seller should have
explained what CCA means! Why are they producing Alu-wire with a copper
layer? Because of the Millions of radio amateurs requesting it? Or,
maybe, because they want to sell it as pure copper?<br>
I'm angry that there is no information on the website. I should send it
back to them! ...and buy something real. At least i will call them as
tell them what i think about this practice.<br>
<br>
Aluminium will also have poor mechanical behaviour i fear, maybe it
breaks after some experiments?<br>
<br>
<blockquote cite="mid:5e87785f-6799-a04e-316a-9c1b27d7f5df@web.de"
 type="cite">
  <div class="moz-cite-prefix">
  <pre class="tw-data-text tw-ta tw-text-small"
 data-placeholder="Übersetzung" id="tw-target-text"
 style="text-align: left; height: 144px;" data-fulltext="" dir="ltr"><span
 lang="en"> It is lightweight and has good RF conductivity.
</span></pre>
  </div>
</blockquote>
Well, maybe on the upper HF bands it doesn't matter, skin effect..., 
but not down below 9 kHz!<br>
<br>
The resistance will be about 1.5 times higher, i.e. i will have a
further 10 Ohm in the loop :-( <br>
That means i have to spend another 10 W at 1 A antenna current and 40W
at 2 A antenna current.<br>
<br>
What now, all the stuff is already prepared for the weekend. If i send
it back then i can do nothing this weekend. But i like to! And live is
to short to waste time. At least i will reduce the losses from 175 Ohm
to 80 Ohm, which means i will gain 3.4 dB. But it could have been 4 dB!<br>
<br>
<br>
<blockquote cite="mid:5e87785f-6799-a04e-316a-9c1b27d7f5df@web.de"
 type="cite">
  <div class="moz-cite-prefix">
  <pre class="tw-data-text tw-ta tw-text-small"
 data-placeholder="Übersetzung" id="tw-target-text"
 style="text-align: left; height: 144px;" data-fulltext="" dir="ltr"><span
 lang="en">I used it for my kite-antenna, see my page on qrz.com
</span></pre>
  </div>
</blockquote>
OH, i know that kite! :-) A nice site. I see you are someone active,
not only sitting in front of the monitor :-)<br>
That 135m high tower, can you install an antenna from there, a sloper,
for LF or so?<br>
<br>
73, Stefan
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