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Radio
Broadcast Technical Consulting and Sales |
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Nott Ltd. |
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Unipoles to Detune Structures |
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If you ever
encounter a situation like this, then you have a problem. The wind
tower was built about 1200 feet from the KLOH AM Radio two-tower
directional antenna at Pipestone, MN in October 2003.
Click here for a better view of the image. |
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Here is a closer view of the
wind generator tower. The blade hub is 150 feet off the ground and
the blades are 52 feet each for a blade diameter of 104 feet. This
unit will generate 700,000 watts of electricity in the right wind
conditions.
The steel tube tower is 10 feet in diameter at the base and 6 feet in diameter at the hub. The tube thickness is one inch. Click here for a better view of the image. |
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A Nott
Ltd. unipole 3-wire detuning system was added to the water
tower. Two of the three wires can be seen in this photo. The
blade tips have automatically adjusted tips to control their speed in the
wind.
Click here for a better view of the image. |
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The bottom of the unipole wires is terminated with a with knee brace bracket, turnbuckle, spring, fiberglass insulator. All of the hardware is either aluminum or galvanized steel to eliminate rusting problems. The down-lead wires are steel with a copper clad. The steel give strength and the copper is an excellent electrical conductor Click here for a better view of the image. |
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There are three tuning
boxes inside the tower. Each one tunes one wire. A
ladder takes the engineer up the tuning boxes at about 10 feet off the
floor.
This is just another example of M. W. Persons and Associates doing problem solving in the radio broadcast field. Click here for a better view of the image. |
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page last edited 03/22/2008
