MIME-Version: 1.0
In-Reply-To: <1649946984.20170624173724@gmail.com>
References: <1649946984.20170624173724@gmail.com>
From: M0FMT <peteg8fmt@gmail.com>
Date: Mon, 26 Jun 2017 14:38:36 +0100
Message-ID: <CANi3vvvPrzj567HROmrQwuJWKDPkcjSVmV6LKRm-Kx2iHy3UMw@mail.gmail.com>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Insulating a Versatower from ground
Content-Type: multipart/alternative; boundary="001a114ba4d66bbd6a0552dd11ae"
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

--001a114ba4d66bbd6a0552dd11ae
Content-Type: text/plain; charset="UTF-8"

Hi all

If its a fairly light weight mast High Voltage Bus Bar insulators may be
worth a look. These devises have thread inserts of typically 6 / 8 /10mm
and are good for 15kV [plus. I doubt you will come near that level of
stress. These thing have a full spec electrically and mechanically so a fag
packet design could be worked up. They are not prohibitively expensive. I
use them for my insulated pole antennas. The size of thread gives a first
cut clue as to their physical strength but would recommend you do the sums
and probably keeping them in compression rather than shear where poss is
best. E-bay a good source.

73 petefmt

On Sat, Jun 24, 2017 at 5:37 PM, Chris Wilson <dead.fets@gmail.com> wrote:

> Hello LF'ers
>
>
> Has anyone tried making insulating bushes for the tilt over hinge and
> the bottom locking peg on a crank up / crank over 40 or 60 foot
> Versatower? How much of a detrimental effect would the steel 6 foot
> above ground, concreted in support post a couple or three inches away
> from it have? Specifically I am toying with doing this to use it on LF
> 136kHz  with  my  horizontal  quad loop as the capacitive "top hat" to
> gain  as  much  vertical height for the radiating element as possible,
> right now the mast has a long insulated line to the corner of my
> horizontal quad
> loop  with  the  vertical  some  way  from the mast, although today to
> minimise  sag  from  having  the vertical some distance away I moved it
> nearer  the  mast.  By  so doing I have gained maybe another 8 feet of
> height. Thanks.
>
>
>
> Thanks
>
>   --
>
>   Best regards, Chris 2E0ILY
>
>     mailto:dead.fets@gmail.com
>
>
>

--001a114ba4d66bbd6a0552dd11ae
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi all</div><div><br></div><div>If its a fairly light=
 weight mast High Voltage Bus Bar insulators may be worth a look. These dev=
ises have thread inserts of typically 6 / 8 /10mm and are good for 15kV [pl=
us. I doubt you will come near that level of stress. These thing have a ful=
l spec electrically and mechanically so a fag packet design could be worked=
 up. They are not prohibitively expensive. I use them for my insulated pole=
 antennas. The size of thread gives a first cut clue as to their physical s=
trength but would recommend you do the sums and probably keeping them in co=
mpression rather than shear where poss is best. E-bay a good source.</div><=
div><br></div><div>73 petefmt</div></div><div class=3D"gmail_extra"><br><di=
v class=3D"gmail_quote">On Sat, Jun 24, 2017 at 5:37 PM, Chris Wilson <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:dead.fets@gmail.com" target=3D"_blank">d=
ead.fets@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
Hello LF&#39;ers<br>
<br>
<br>
Has anyone tried making insulating bushes for the tilt over hinge and<br>
the bottom locking peg on a crank up / crank over 40 or 60 foot<br>
Versatower? How much of a detrimental effect would the steel 6 foot<br>
above ground, concreted in support post a couple or three inches away<br>
from it have? Specifically I am toying with doing this to use it on LF<br>
136kHz=C2=A0 with=C2=A0 my=C2=A0 horizontal=C2=A0 quad loop as the capaciti=
ve &quot;top hat&quot; to<br>
gain=C2=A0 as=C2=A0 much=C2=A0 vertical height for the radiating element as=
 possible,<br>
right now the mast has a long insulated line to the corner of my horizontal=
 quad<br>
loop=C2=A0 with=C2=A0 the=C2=A0 vertical=C2=A0 some=C2=A0 way=C2=A0 from th=
e mast, although today to<br>
minimise=C2=A0 sag=C2=A0 from=C2=A0 having=C2=A0 the vertical some distance=
 away I moved it<br>
nearer=C2=A0 the=C2=A0 mast.=C2=A0 By=C2=A0 so doing I have gained maybe an=
other 8 feet of<br>
height. Thanks.<br>
<br>
<br>
<br>
Thanks<br>
<br>
=C2=A0 --<br>
<br>
=C2=A0 Best regards, Chris 2E0ILY<br>
<br>
=C2=A0 =C2=A0 mailto:<a href=3D"mailto:dead.fets@gmail.com">dead.fets@gmail=
.com</a><br>
<br>
<br>
</blockquote></div><br></div>

--001a114ba4d66bbd6a0552dd11ae--