Chris, I was wondering if the possible solution might be to dismantle
the existing mast and crane the ground post from the ground. Then one
might enlarge the hole and line it with a very substantial insulating
barrier before installing a replacement ground post into poured
concrete, eventually reassembling the versatower to the ground post.
Whether or not this would achieve your goal is open to debate but is
such an amount of work and possible expense worth it?
73 de g4gvw
On 25/06/17 15:38, Mike Dennison wrote:
Nice idea, Chris, but any insulation would have to withstand the
thousands of volts on your antenna in all conditions (wet and dry).
Might work for the lower volages on higher bands but I doubt it would
be OK at LF. The other factor worth bearing in mind is the max
permitted ERP which you must be close to already judging from the
reports you are getting.
Mike, G3XDV
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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
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Best regards, Chris 2E0ILY
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73 de Pat G4GVW QTH Nr Felixstowe UK
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