Albums: WA7DUH And WB7CNV Tower Construction
WA7DUH And WB7CNV Tower Construction
Photo essay of tower project at the station of Linda WB7CNV and Steve WA7DUH. They live just outside of the Richland and West Richland city limits in Benton County. Project is to initially erect a 65 ft guyed tower, but to design it for 75 ft or higher. Benton County has an ordinance controlling "communications facilities" (BCC 11.65) which includes "communication towers and antennas." Many of the requirements are exempted for amateur radio towers and antennas not exceeding 65 ft.P1020761.JPG
There is a lot of electronics and relays that go into this antenna. Pictured is Gary W7TYQ that came up to help from Yreka CA.
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Control lines from each active element and the coax switching relays come together into junction terminals.
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A very thick polifin heat shrink tube locks each joint into place.
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Although not called for in the assembly manual, on recommendation from Brian W7BJN, a glue bead is placed at each nesting tube junction to prevent them from sliding back in over time. Constant movement in the wind at the top of a tower can cause them to work in according to Brian. Made sense to this crew.
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Dave W7DJE helps measure out an element tube. These nesting tubes are pulled out, and the ends are trimmed to length with a hacksaw.
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OK, how to these hollow fiberglass tubes go together??
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All the cabling prior to clean up.