[TowerTalk] Re: [DX] INSTALLING HEAVY MASTS

[T A RUSSELL]

INSTALLING  LONG   HEAVY   MASTS    ...de   N4KG

Some time ago, an excellent suggestion was made to TOWERTALK
on how to install heavy masts using a 12 ft Rohn GIN Pole.  The steps 
are outlined below:

1 -  Assemble the tower to the first guy level and install guys.
       (Or, if a heavy concrete base is used, assemble 20 ft of tower)

2 -  Next to this tower, and secured to it, assemble an equal number
       of Rohn 25 tower sections, PLUS  ONE, as a temporary support.

3 -  Attach the GIN  POLE at the top of the second (Rohn 25) tower.

4 -  Attach the GIN  Pole ROPE above the center of gravity on the mast.
      (Several properly tied clove hitches or other clamping mechanisn)

5 - Raise the mast above the permanent tower and lower down inside
     the permanent tower.

6 -  Remove the temporary Rohn 25 tower.

My friend KD4WS has used this technique to successfully remove a 
20 foot mast from a Rohn 45 tower he bought and then reinstalled
at his home QTH using the same procedure.  He used power-pulls
to secure the Rohn 25 tower to the larger Rohn 45.

de  Tom  N4KG
............................

On Mon, 27 Oct 1997 19:51:57 -0500 Thomas Roscoe <k8cx@infonline.net>
writes:

>I just put up a 130' Rohn 45 in the back yard last year (with the help
>of K3LR and friends).  I decided to do this right and purchase the 
>high
>carbon steel mast you mentioned above (not knowing what I might put on
>it). I ordered the heaviest one they had.  It probably was the right
>thing to do but was not without problems. It was very expensive (over
>$500 plus another $100 for shipping). It was hard to get to the back
>yard (very heavy). We slid it into 3 assembled sections on the ground
>and tried to walk it up. We had about 10 strong people try this; it 
>was
>unsuccessful. So then we put the tower up to 70' and tried to bring 
>the
>mast up and over. This was also unsuccessful. The weight of this thing
>made it very hard to handle. We ended up bringing in a hired tower pro
>to set this mast. He made it look easy.
>Now that its up, I'm glad I have something that is super strong up
>there. But getting it there was a nightmare. My suggestion would be
>getting the high carbon galvanized mast (but not the heaviest one they
>have) if your going to put larger antennas on it. You can get away 
>with
>the aluminum mast for the medium antennas.
>I hope this was helpful.
>73...Tom...K8CX
>

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