If you don't have a CAD system, but DO have the drawing used to
identify your property when you bought it (it might be called a plat plan),
you can use that instead. I made several dozen copies of my plat plan over
the years as I added a deck, two-story addition (which included my present
Ham shack) and finally my tower. I used the latest versions when I hung my
inverted L and various Ewes for Topband, as well as for the tower itself.
This approach likely would be more accurate than your own CAD version, as it
should have been laid out by a licensed land surveyor.
Gene Smar AD3F
----- Original Message -----
Cc: "Mark Robinson" <firstname.lastname@example.org>
Sent: Thursday, April 15, 2010 4:42 PM
Subject: Re: [TowerTalk] Measuring Guy Positions
> If you have a CAD system you can draw your house and perhaps a fence or
> other external objects and layout your antenna on the drawing. Then you
> simply measure each anchor from some known object.
> John KK9A
> Subject: [TowerTalk] Measuring Guy Positions
> From: "Mark Robinson"
> Date: Thu, 15 Apr 2010 13:15:57 -0400
> I have my new 100 foot Rohn 45 set to go up on the gable end of the house.
> have a wall bracket at 18 feet tied into the second storey ceiling joists.
> can remove this wall bracket later if it proves to give me problems and
> I will probably never do a wall bracket again.
> I have set the rear guy back 108 feet at right angles to the gable end of
> the house. Using string to layout right angle triangles and a triangle
> 30 and 60 degrees and a hypotenuse of 97 feet, I have marked the postions
> the other 2 guys set 120 degrees from the rear guy line. Since the guys
> stradle the house and I have trees and a pump house I cannot see any guy
> anchor postion from any of the other guy anchor location . When I get the
> tower up to 30 or 40 feet then I will be able to see all three guy anchor
> points from the tower vantage point. I would like to check the 120 degree
> spacing of the guys at that time before digging any anchor holes. What is
> the easiest way to measure the angle between the 3 marked guy anchor
> postions from my vantage point on the tower.
> thanks Mark N1UK
> TowerTalk mailing list
TowerTalk mailing list