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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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... 534 visits

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Guy lines are Phillystran, a non-conductive arimid fiber. Cable grips are used for termination.

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Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 534 visits

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Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 529 visits

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Here is the house ground rod as we found it. It doesn't meet code. Only one ground was found or wired into the electrical panel, but code requires two, with at least 6ft separating them. The solid copper wire is also too small, and the one rod was not 6 inches below grade. So we fixed that up.

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Uploaded on 09/03/2012 - 6:26pm by admin 529 visits

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Uploaded on 10/10/2012 - 5:38pm by WA7DUH Steve St... 526 visits

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 525 visits

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Trenching between the tower base and the ham shack entrance. The picture doesn't really show the 18% downslope here, and the trencher was stuck and rolling into one of the deck support posts. Come-alongs are keeping the trencher from taking out the deck post plus the tractor is extracting.

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Uploaded on 09/03/2012 - 6:25pm by admin 525 visits

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Uploaded on 09/03/2012 - 6:25pm by admin 523 visits

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Uploaded on 10/10/2012 - 5:37pm by WA7DUH Steve St... 520 visits

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Control lines from each active element and the coax switching relays come together into junction terminals.

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Uploaded on 09/25/2012 - 11:02am by WA7DUH Steve St... 518 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 518 visits

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Assembling an element housing unit (EHU) prior to installation.

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 516 visits

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The reflector EHU and element return fixture mounted on boom.

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 515 visits

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Uploaded on 09/15/2012 - 7:35pm by WA7DUH Steve St... 515 visits

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Drilling through mast for 3/8" bolt anti-rotation (no-slip).

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 514 visits

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Gary (W7TYQ) Dave (W7DJE) and Peter (AC7SB) attach the reflector Return Element Support to the boom.

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 509 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... 508 visits

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Dave W7DJE looks through the boxes for parts. Duffy helps.

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Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 508 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 508 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 508 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 507 visits

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Uploaded on 09/15/2012 - 7:34pm by WA7DUH Steve St... 507 visits

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Uploaded on 09/15/2012 - 7:36pm by WA7DUH Steve St... 505 visits

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Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 503 visits

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 501 visits

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 501 visits

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 500 visits

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The interior of a SteppIR Element Housing Unit (EHU) with stepper motor that drives copper-beryllium tapes in and out of the hollow antenna element tubes. The tapes are the radiating/active elements of the Yagi beam antenna. This SteppIR antenna is able to be resonant anywhere between 6.5 Mhz and 54 Mhz by adjusting the lengths of the Beryllium tapes. The tapes are wound on the spools that are seen in the picture using the cogged wheel that engage holes punched into the tapes. Cogged wheel is driven by a stepper motor, which has absolute positioning capability. The computerized controller knows how far to position out the tapes in the driver, reflector and director tubes for any given frequency.

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 499 visits

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Fritz "I own this tractor. Let's go for a ride"

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Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 496 visits

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This is Duffy, Dave's (W7DJE) dog.

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Uploaded on 09/25/2012 - 10:57am by WA7DUH Steve St... 496 visits

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Uploaded on 09/25/2012 - 10:59am by WA7DUH Steve St... 495 visits

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Uploaded on 09/13/2012 - 7:04pm by WA7DUH Steve St... 495 visits

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Uploaded on 09/13/2012 - 7:03pm by WA7DUH Steve St... 494 visits

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Uploaded on 09/25/2012 - 11:04am by WA7DUH Steve St... 489 visits

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Let's break off some bolts with an air driven impact wrench. Luckily the manufacturer provided spares.

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Uploaded on 09/25/2012 - 10:58am by WA7DUH Steve St... 489 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... 489 visits

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Uploaded on 09/15/2012 - 7:35pm by WA7DUH Steve St... 488 visits

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Steve WA7DUH; Peter's wife Tacy (on the end); Gary W7TYQ and Dave W7DJE trying to program a 2M handi-talkie; and Peter AC7SB.

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Uploaded on 09/25/2012 - 11:00am by WA7DUH Steve St... 486 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 484 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... 481 visits