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

P1020491.JPG

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 553 visits

P1020752.JPG

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.

0 / 0
Uploaded on 09/25/2012 - 11:01am by WA7DUH Steve St... 589 visits

P1020638.JPG

0 / 0
Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 580 visits

P1020585.JPG

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

0 / 0
Uploaded on 09/03/2012 - 6:26pm by admin 546 visits

P1020581.JPG

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

0 / 0
Uploaded on 09/03/2012 - 6:26pm by admin 730 visits

P1020622.JPG

0 / 0
Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 660 visits

P1020731.JPG

Director element EHU and element return fixture.

0 / 0
Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 694 visits

P1020755.JPG

0 / 0
Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 718 visits

P1020506.JPG

0 / 0
Uploaded on 08/14/2012 - 5:30pm by WA7DUH Steve St... 572 visits

P1020634.JPG

0 / 0
Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 499 visits

P1020497.JPG

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.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 669 visits

P1020420.JPG

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.

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 1020 visits

P1020498.JPG

A better view of the rebar cage.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 662 visits

P1020684.JPG

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

0 / 0
Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 527 visits

P1020419.JPG

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

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 977 visits

P1020728.JPG

0 / 0
Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 518 visits

P1020648.JPG

0 / 0
Uploaded on 09/15/2012 - 7:36pm by WA7DUH Steve St... 499 visits

P1020424.JPG

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

0 / 0
Uploaded on 08/09/2012 - 7:59am by WA7DUH Steve St... 883 visits

P1020579.JPG

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.

0 / 0
Uploaded on 09/03/2012 - 6:26pm by admin 571 visits

P1020508.JPG

WB7CNV (Linda) bows properly to the tower gods.

0 / 0
Uploaded on 08/14/2012 - 6:13pm by WA7DUH Steve St... 531 visits

P1020686.JPG

Hygain T2XD rotator mounted on the hazer.

0 / 0
Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 481 visits

P1020398.JPG

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

0 / 0
Uploaded on 08/04/2012 - 11:39am by WA7DUH Steve St... 1026 visits

P1020636.JPG

0 / 0
Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 502 visits

P1020754.JPG

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

0 / 0
Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 538 visits

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.

0 / 0
Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 501 visits