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A single vertical tubing material list. The longest tube is 15ft(4.6M). All other
tubes are 6ft (1.8M)or less. Most joints are triple-wall.
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75MM base pipe for vertical mast. The base pipes aer spaced at 60 Meters with 1/2
yard of concrete.
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Insukator is a 1 meter x 50MM diameter solid fiberglass pipe. The aluminum 21 meter masts are painted white for preservation
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Mounting the insulator to the hinge bracket
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This is a view of the overlapped triple-walled joint. 3 Tek screws are used on
each side of the joint.
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Insukator is a 1 meter x 50MM diameter solid fiberglass pipe. The aluminum 20
meter masts are painted white for preservation
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The tarred nylon ropes are attached woith a hose clamp at 3 levels. Each level
has 4 ropes for 4 direction guying.
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4 aluminum straps were used to provide a good electrical connection. These were
used on the mast when transitioning between 75mm to 50mm
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Hinged base to allow easy tuning. 2 galvanized automotive muffler clamps secure
the mast when vertical.
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Mounting the insulator to the hinge bracket.
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Vertical mast shown in the raised position. 4 people are required to rase the
mast.
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Top view in the raised position.
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Hinged base keeps the vertical insulator 75mm from the ground.
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3200 Meters of 1.2mm copper wire was used to make the radials. Each vertical has fourty 41 meter long radials
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Radials with ring. Only 20 radials attached due to weight.
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The radials are rolled up and removed after each contest.
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The radials are attached to the guy ring with stainless steel bolts.
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40 radials on each vertical
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L network matching unit. The 180 degree rg302 toroidal phase shifter is shown in the upper center. This toroid switches the array between Endfire and Broadside.
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The white wire is the feedpoint wire. The 1/4 wave 9913 feedline can be seen on the right.
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A view looking up the mast with cords attached. This is the old design with the
.75 " (20 mm) tip. A new stronger design was added in Mar 2009
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The mast moves in th wind even with 3 level 4 way guying. A new stronger
design was added in Mar 2009
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A view of the NE vertical from the South tower. The EU-SA beverage can be seen in the distance.
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Both verticals can ve seen on each side of the tower.
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The SW vertical mast. This is the old design that taperered to .75" (20 mm) at
the tip. This design failed in moderate winds.
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Both verticals near sunset.
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The new SW vertical is much stronger. The top of the mast is 1.5 "(38 mm)
diameter.
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The new NE vertical is much stronger. The top of the mast is 1.5 "(38 mm)
diameter. The T wire insulators can be seem at ther top
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