*Yes, at 80 ft.*
In a message dated 12/9/2015 10:43:27 P.M. Coordinated Universal Tim,
herbs@vitelcom.net writes:
Is there anyway you can put a slip ring to support a T antenna
(Marconi)
for 160 and 80 at some height that won't snag the beam elements?
Herb, KV4FZ
On 12/9/2015 6:34 PM, Cqtestk4xs--- via Topband wrote:
> Next year I'll be building a new home and station in Hawaii.
>
> 40 through 6 meters is already set in stone, but 80 and 160 are
still
> cloudy.
>
> Here's the setup:
>
> I'm allowed one tower maximum 90 ft. The tower will be 90 ft
of Rohn 55
> using a K0XG rotating system with two rings. It will be guyed
using
> fiberglass guys. There will be a bunch of HF VHF stuff on the
tower. Three
> tribanders, two 12/17 meter Yagis, a 40 meter Yagi and way down
on the bottom
> two 6 meter antennas.
>
> The tower sits on VERY uneven ground. Although the lot
measures 12
> acres, I am using only the top three and renting out the rest of
the land to a
> farmer to keep taxes from being crazy high.
>
> The ground is pure alluvial red fine particle soil (no stones)
and has a
> depth of about 6 feet before hitting rock. Since the east side
of Hawaii
> gets at least 100 inches of rain a year it is usually pretty
moist. I would
> assume the soil is at least average or better in conductivity.
I can run
> ropes, wires etc off the tower at the 80 and 40 foot guy
points, but can not
> connect directly to the tower since the tower rotates. The is
no room for
> a rotating dipole on the tower for 80.
>
> I've used quad triangle loops before with the pointed end on
the bottom
> suspended by wires and am leaning towards that since the ground
is so uneven
> and the terrain difference would be a real negative for a 4
square (I
> think).
>
> On 160 I'm leaning toward a wire vertical suspended from a rope
coming
> from the tower which would make the antenna about 65 or 70 feet
tall and to
> compensate for that I would make it a T-top.
>
> For rx I have lots of room to run a 700 -900 Beverage to JA and
another to
> EU/USA direction, so that isn't a problem.
>
> I do need suggestions for my 80 and 160 tx situation. Any ideas?
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