Re: LF: Insulating a Versatower from ground

[M0FMT <peteg8fmt@gmail.com>]

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