To: rsgb_lf_group@blacksheep.org
References: <165b516335a-1ebf-5174@webjas-vad091.srv.aolmail.net>
From: "Stan, W1LE" <stanw1le@verizon.net>
Message-ID: <d703499f-673f-4414-0361-2e9987ae3a2f@verizon.net>
Date: Fri, 7 Sep 2018 15:45:48 -0400
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Subject: Re: LF: Porcelain insulators on rope guys for a vertical antenna
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Hello Mike,

Thanks for your comments.

I have plenty of the egg insulators in stock. I will be sure to have 1 
in each guy . Once I get the final version of the vertical up in the 
air, I hope to keep it there for a couple of decades.

And I will plan to instrument the final install for impedance changes 
with the weather, and hi-pot.

All of the original 3/16" twisted nylon guys in the set, will be 
replaced with the double braid.

Here on Cape Cod we have the typical New England weather, plenty of 
rain, snow, ice, and wind.

Stan, W1LE


On 9/7/2018 1:30 PM, wa3tts@verizon.net wrote:
> Stan: For what it is worth, I found a piece of 3/16" nylon covered 
> polyester line removed from my HF vertical after 15 years of outdoor 
> exposure. The line was dry and some dried mold present on the nylon 
> jacket.
>
> My electronic  megger indicated over 20 Giga-ohms at 2500VDC test 
> voltage, even at 1 inch separation along the line. Then I wetted the 
> line with tap water. Resistance fell to 1/2 megaohm at 500VDC test 
> voltage over a 6 inch span of the line.
>
> Perhaps if you live in the Arizona desert with low humidity most of 
> the year, it may not matter much. Would you rather radiate energy, or 
> use it to dry out your guy lines?  For the few extra $, I would stick 
> with the guy line insulators.
>
> 73, Mike wa3tts
>
>
> -----Original Message-----
> From: Stan, W1LE <stanw1le@verizon.net>
> To: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
> Sent: Fri, Sep 7, 2018 12:40 pm
> Subject: LF: Porcelain insulators on rope guys for a vertical antenna
>
> Hello The Net:
>
> For my vertical antenna guyed in three direction at 4 levels, I am
> planning to use 3/16", polyester, braided, of double braid construction.
> Original guys were of the military surplus type, part of a GRA-4 antenna
> system and part number MX-383A/GRA-4, that uses, 1 each, insulator in 
> line.
>
> For replacement guys, can I remove the insulator and only use the
> braided line ?
>
> With wet guys (after rainstorm) I measure the (~ DC) resistance from the
> vertical to ground as greater than 6 megohms, my meters capability.
>
> What are your thoughts ?
>
> I can add the insulators, but I would also need to add crimped
> connectors or other rope clamps, that would reduce the ultimate
> reliability of the guy.
>
> The vertical is constructed of MS-44 aluminum masting sections stacked
> up to 50', (maybe 55 or 60'+ later). Final plan is to add a capacitive
> top hat with 8 each, 20' radials and a center loading coil for use on
> 2200M and 630M. Probably a additional switchable base loading coil for
> 2200M tuning (TBD).
>
> Stan, W1LE    Cape Cod   FN41sr
>
>
>
>
>
> ZZZZz
>
>
>
>
>
>


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    <p>Hello Mike,</p>
    <p>Thanks for your comments.</p>
    <p>I have plenty of the egg insulators in stock. I will be sure to
      have 1 in each guy . Once I get the final version of the vertical
      up in the air, I hope to keep it there for a couple of decades.</p>
    <p>And I will plan to instrument the final install for impedance
      changes with the weather, and hi-pot.<br>
    </p>
    <p>All of the original 3/16" twisted nylon guys in the set, will be
      replaced with the double braid.</p>
    <p>Here on Cape Cod we have the typical New England weather, plenty
      of rain, snow, ice, and wind.<br>
    </p>
    <p>Stan, W1LE</p>
    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 9/7/2018 1:30 PM, <a class="moz-txt-link-abbreviated" href="mailto:wa3tts@verizon.net">wa3tts@verizon.net</a>
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:165b516335a-1ebf-5174@webjas-vad091.srv.aolmail.net">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
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style="font-size:10pt;font-family:arial,helvetica,sans-serif;color:black;">
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;">Stan:
          For what it is worth, I found a piece of 3/16" nylon covered
          polyester line removed from my HF vertical after 15 years of
          outdoor exposure. The line was dry and some dried mold present
          on the nylon jacket.</div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;"><br>
        </div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;">My
          electronic  megger indicated over 20 Giga-ohms at 2500VDC test
          voltage, even at 1 inch separation along the line. Then I
          wetted the line with tap water. Resistance fell to 1/2 megaohm
          at 500VDC test voltage over a 6 inch span of the line.</div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;"><br>
        </div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;">Perhaps
          if you live in the Arizona desert with low humidity most of
          the year, it may not matter much. Would you rather radiate
          energy, or use it to dry out your guy lines?  For the few
          extra $, I would stick with the guy line insulators.</div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;"><br>
        </div>
        <div
style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:black;">73,
          Mike wa3tts<br>
          <br>
          <br>
          -----Original Message-----<br>
          From: Stan, W1LE <a class="moz-txt-link-rfc2396E" href="mailto:stanw1le@verizon.net">&lt;stanw1le@verizon.net&gt;</a><br>
          To: rsgb_lf_group <a class="moz-txt-link-rfc2396E" href="mailto:rsgb_lf_group@blacksheep.org">&lt;rsgb_lf_group@blacksheep.org&gt;</a><br>
          Sent: Fri, Sep 7, 2018 12:40 pm<br>
          Subject: LF: Porcelain insulators on rope guys for a vertical
          antenna<br>
          <br>
        </div>
        Hello The Net:<br>
        <br>
        For my vertical antenna guyed in three direction at 4 levels, I
        am <br>
        planning to use 3/16", polyester, braided, of double braid
        construction. <br>
        Original guys were of the military surplus type, part of a GRA-4
        antenna <br>
        system and part number MX-383A/GRA-4, that uses, 1 each,
        insulator in line.<br>
        <br>
        For replacement guys, can I remove the insulator and only use
        the <br>
        braided line ?<br>
        <br>
        With wet guys (after rainstorm) I measure the (~ DC) resistance
        from the <br>
        vertical to ground as greater than 6 megohms, my meters
        capability.<br>
        <br>
        What are your thoughts ?<br>
        <br>
        I can add the insulators, but I would also need to add crimped <br>
        connectors or other rope clamps, that would reduce the ultimate
        <br>
        reliability of the guy.<br>
        <br>
        The vertical is constructed of MS-44 aluminum masting sections
        stacked <br>
        up to 50', (maybe 55 or 60'+ later). Final plan is to add a
        capacitive <br>
        top hat with 8 each, 20' radials and a center loading coil for
        use on <br>
        2200M and 630M. Probably a additional switchable base loading
        coil for <br>
        2200M tuning (TBD).<br>
        <br>
        Stan, W1LE    Cape Cod   FN41sr<br>
        <br>
        <br>
        <br>
        <br>
        <br>
        ZZZZz<br>
        <br>
        <br>
        <br>
        <br>
        <br>
        <br>
      </div>
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