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| It all started in the summer of 2007 when CTC (Consolidated Telecommunications Company) built a 180-foot wireless Internet tower in the Brainerd Industrial Park just 0.87 miles (1.4 KM) west of the KLIZ-AM 3-tower night directional antenna system. KLIZ-AM operates on 1380 KHz, which makes the Consolidated tower almost exactly one-quarter wavelength in height. Needless to say, the new tower became a significant re-radiator of the KLIZ-AM signal. It was picking up the KLIZ signal and re-transmitting it in a fashion that raised the field intensity levels in the nearby AM directional monitor points. This is a common problem that can be solved. |
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Here is Bill Stroot,
Project Manager at
CTC, smiling after the tower was successfully detuned using a
Nott Ltd three-wire unipole
detuning system and the technical expertise of M. W. Persons and
Associates.
We tried something different on this one. The three near-vertical 145 foot unipole wires are on the "inside" of the tower rather than the outside. This was made possible because the tower is a self-supporting structure that is 22 feet across at the base. |
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The unipole detuning box
sits at the center of the inside of the tower.
The vertical unipole wires turn horizontal at 8 feet above the ground and
meet just above box. The project when very smoothly and it worked as predicted to detune the tower at 1380 KHz. |
page last edited 04/16/2008
