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.
138 images Submitted by WA7DUH Steve St... on Sat, 08/04/2012 - 11:19am

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Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 555 visits

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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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Uploaded on 09/25/2012 - 11:01am by WA7DUH Steve St... 591 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 582 visits

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Driving those ground rods down at least 6 inches below grade with a power hammer.

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Uploaded on 09/03/2012 - 6:26pm by admin 547 visits

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The #4 solid wire and the copper strap is also run to the house electrical ground and into the ham shack entrance.

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Uploaded on 09/03/2012 - 6:26pm by admin 732 visits

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Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 662 visits

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Director element EHU and element return fixture.

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 696 visits

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Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 720 visits

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Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 574 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 501 visits

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The tower base hole. 2x4's above the forms hold up and align the top rebar grid. There is also lower grid sitting on concrete blocks. The tower base that will be submerged in concrete floats in the center of both the top and bottom rebar grids. Temporary guy ropes hold the tower in perfect plumb. Grandson Adam approves.

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Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 672 visits

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The break wasn't so bad. The mess was created when the sprinkler controller decided to turn the water on, washed out the far bank and filled the hole. Duhhhh.

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Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 1023 visits

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A better view of the rebar cage.

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Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 665 visits

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Fritz loves to ride in the cart as Steve (WA7DUH) goes to the shop to pick up SteppIR antenna parts.

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 529 visits

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Yikes-- hit the sprinkler pipes. Anyone know a good way to find these sub-surface?

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Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 980 visits

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 519 visits

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Uploaded on 09/15/2012 - 7:36pm by WA7DUH Steve St... 499 visits

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Basic process when digging all the holes-- dirt goes in the cart, Linda (WB7CNV) hauls away.

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Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 886 visits

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One of three ground tower ground rods. The are each connected to a tower leg with both a #4 solid copper wire (per NEC) PLUS a 1 1/2 inch low RF impedance copper strap. Once connections are made, the ground rod is then driven down so it is at least 6 inches below grade.

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Uploaded on 09/03/2012 - 6:26pm by admin 573 visits

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WB7CNV (Linda) bows properly to the tower gods.

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Uploaded on 08/14/2012 - 6:13pm by WA7DUH Steve St... 533 visits

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Hygain T2XD rotator mounted on the hazer.

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 483 visits

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Linda WB7CNV cut about 450 tie wires for the tower base and 3 guy station rebar cages.

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Uploaded on 08/04/2012 - 11:39am by WA7DUH Steve St... 1030 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 502 visits

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A very thick polifin heat shrink tube locks each joint into place.

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Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 540 visits

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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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Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 504 visits

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Uploaded on 09/03/2012 - 6:26pm by admin 462 visits

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Trying to fix a cave in. Sandy soil.

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Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 999 visits

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Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 487 visits

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#4 solid copper over to the house electrical entrance ground. Found more irrigation, Spinkler valve control cable (run in water pipe PVC) and some Romex (indoor only) that the previous owner had run to some outdoor lights. Gotta fix all that.

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Uploaded on 09/03/2012 - 6:26pm by admin 479 visits

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Each of the 3 tower grounds are out abot 7 feet from each tower leg, with #4 solid copper and 1 1/2 inch copper strap back to the tower, over to the house electrical ground and down to the ham shack. Two inch rigid non-metal conduit is also buried in the trench to hold 4 runs of LMR-400 coax.

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Uploaded on 09/03/2012 - 6:26pm by admin 535 visits

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W7TYQ (Gary) tightens everything down after applying antiseize paste.

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 472 visits

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A completed element. 30M & 40M beam operation is achieved by pushing the beryllium tape through the sweep and down the "return" side, creating a resonant folded element. Thus these elements are only 40 feet wide instead of the 62 feet that would be required if they where straight out.

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Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 699 visits

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OK, how to these hollow fiberglass tubes go together??

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Uploaded on 09/25/2012 - 11:01am by WA7DUH Steve St... 581 visits

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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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Uploaded on 09/25/2012 - 11:01am by WA7DUH Steve St... 474 visits

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Adam loves Jessica Kabota.

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Uploaded on 08/14/2012 - 5:28pm by WA7DUH Steve St... 746 visits

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Guys from Speedy Angeles Concrete, LLC out of Pasco WA do the work. They have the equipment and muscle, and did the job for a good price.

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Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 538 visits

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Many parts to each unit..

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 629 visits

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Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 497 visits

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The guy rods have 6 x 6 x 1/2 in steel plates to keep them from pulling out of the concrete guy station blocks. Picture shows drilling the 3/4 in holes for the rods. I need a slower turning drill press.

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Uploaded on 08/04/2012 - 6:44pm by WA7DUH Steve St... 934 visits

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Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 719 visits