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

P1020777.JPG

0 / 0
Uploaded on 09/25/2012 - 11:03am by WA7DUH Steve St... 783 visits

P1020499.JPG

Adam loves Jessica Kabota.

0 / 0
Uploaded on 08/14/2012 - 5:28pm by WA7DUH Steve St... 746 visits

P1020785.JPG

Yes, the droop is normal. Note the middle driven element has not been installed in this picture. The tree has to be removed.

0 / 0
Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 744 visits

P1020644.JPG

0 / 0
Uploaded on 09/15/2012 - 7:35pm by WA7DUH Steve St... 743 visits

P1020688.JPG

Mast installed is 2 inch high strength galvanized steel about 8 feet long.

0 / 0
Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 735 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 732 visits

P1020786.JPG

0 / 0
Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 720 visits

P1020755.JPG

0 / 0
Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 720 visits

P1020776.JPG

Assembling an inner guide and support tube that is slid into the large end of the element tubes to provide a consistent diameter for the beryllium tape that must slide in and out.

0 / 0
Uploaded on 09/25/2012 - 11:03am by WA7DUH Steve St... 714 visits

P1020784.JPG

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.

0 / 0
Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 699 visits

P1020731.JPG

Director element EHU and element return fixture.

0 / 0
Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 697 visits

P1020783.JPG

Rubber boots hold the elements into the EHU sockets.

0 / 0
Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 685 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... 672 visits

P1020498.JPG

A better view of the rebar cage.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 666 visits

P1020622.JPG

0 / 0
Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 662 visits

P1020702.JPG

How is this supposed to go???

0 / 0
Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 661 visits

P1020738.JPG

0 / 0
Uploaded on 09/25/2012 - 11:01am by WA7DUH Steve St... 659 visits

P1020490.JPG

Rebar cage for guy station is lowered onto concrete blocks that elevate up off the bottom.

0 / 0
Uploaded on 08/14/2012 - 5:24pm by WA7DUH Steve St... 655 visits

P1020625.JPG

It looks like coax in this picture, but it is Phillystran, a non-conductive arimid fiber guy wire. Good for about 4,000 lbs pull.

0 / 0
Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 648 visits

P1020767.JPG

After assembling 1 of the active elements on the grass by the tower in about 3 hours, assembly was moved into Steve & Linda's shop where an assembly line could be set up, as there are 6 of these to make. Time was reduced to about 1 hour per unit.

0 / 0
Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 631 visits

P1020719.JPG

Many parts to each unit..

0 / 0
Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 629 visits

P1020696.JPG

Boom joiner on the SteppIR Dream Beam DB18E). Colored dots on the pieces helps the assembler to find and line up the proper pieces.

0 / 0
Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 617 visits

P1020781.JPG

0 / 0
Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 610 visits

P1020643.JPG

0 / 0
Uploaded on 09/15/2012 - 7:35pm by WA7DUH Steve St... 610 visits

P1020619.JPG

A view of the trench heading down to the ham shack. That white bottle in the picture is copper anti-seize/anti-corrosion goop that is used liberally on ALL copper-to-copper connections.

0 / 0
Uploaded on 09/03/2012 - 6:27pm by admin 598 visits