Topband: Ideas for xmit antennas for new QTH in KH6

[Herbert Schoenbohm]

OK....fine!  From there attach a Dacron rope to support a Lazy Inverted 
L or sloper that is started some distance away from the tower to 
minimize interaction, and feed it with 50 ohm coax against a few 
radial.  You can even drop a wire for 80 meters  from the same halyard 
and use the same feed connection. Both the 160 and 80 wires should be 
slightly longer than 1/4 wave so two different series capacitors can be 
used as may be required.  If the 160 and 80 drop wires are 20 feet or 
more apart you should be able to use the same feed line without any 
serious problem. The radial you use for 160 work just a good for 80 and 
of they are insulated wire laying on the ground need not be a quarter 
wave and can be 20 to 30% shorter than normal.


Herb Schoenbohm, KV4FZ

On 12/9/2015 9:12 PM, Cqtestk4xs at aol.com wrote:
> *Yes, at 80 ft.*
> In a message dated 12/9/2015 10:43:27 P.M. Coordinated Universal Tim, 
> herbs at 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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