CREATE KT-18R /JAPAN TOWER 17.6METER
17250ر.س
Product description
The product requires pre-order and delivery within 30 working days
The product is for radio amateurs, government projects, and private sector projects only
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KT -R Series For Middle to Large Size Antennas, 15~22m Self-Supporting Tower Inherited from KT-C Series, Enable to Earn a Tall
Height of Tower and Installable a Large Antenna. The KT-R series are complete self-supporting semi-tapered triangular towers. Like the conventional KT tower, the KT-R series towers are composed of three rails (formed channel steel) and braces (tubings) bolted together to fasten each other. They are intended for large antennas, and have a new design to make them light-weight and strong. A side view of the antenna shows that the two upper sections (40cm wide) are straight, while the 3rd, 4th, 5th and 6th sections constitute a tapered portion (giving a 1m increase in width) seated on the lower straight portion on the foundation. This allows a minimum foundation area. Generally, a self-supporting tower has a large lower part and an upper part which tapers to the top. In the KT-R series is the tower designed and developed the stress problem by altering the materials of the antenna members and the structure, obviating the need to enlarge the antenna. The structure and design of the antenna tower are based not only on calculations but also on experiments under various stress conditions. Particular consideration has been given to torsion, warp and directional strength, which are vital factors in triangular cross-sectional, self-supported towers. A grounding plate is provided at the foundation to allow for possible lightning strikes. This also facilitates construction and makes it easier to find the true perpendicular. If the ground resistance is small enough, no other lightning arrester is necessary. Working Schedule Construction work for this KT-R tower is processed in two steps. The 1st step is to provide a foundation for the tower, excavation and concrete. 2nd steps is to assembly of the each section units (above the foundation) of the tower and to stack them on the foundation. Before start working the 2nd step, it must to wait at least 4 days until concrete is formed. It is advisable to purchase the most appropriate concrete for actual use from one of the dealers instead of mixing them by your own as timing is important. Contact your local concrete provider and reserve them the concrete by telling them the required volume of excavated hole and the time in order to meet the time for concrete pouring to be.
