Ed nailed it.
Mike va3mw
On Thu, Jun 16, 2016 at 11:47 AM, Ed Sawyer <sawyered@earthlink.net> wrote:
> I have never done a crane install so I will let others speak to that.
>
>
>
> For Tram of a 70 ft tower, you have 2 choices from my experience. Tram to
> the point on the mast above the tower (say 73') and have a backstay; or
> tram
> to the top of the tower itself, attach the beam to the tower, then lift the
> antenna up the last few feet to the mast position.
>
>
>
> The tram should be about 100 ft out from the tower. The back stay can be
> closer but still likely around guy wire length - 60 ft or so. If you have
> the room, it's the easiest.
>
>
>
> What I have learned over time is the advantage of having the top set of
> guys
> NOT be at the top of the tower but actually a few feet below the tower.
> Makes tramming up big yagis A LOT easier.
>
>
>
> I have trammed up myself but find that a crew of 3 is a good minimum. A
> hauler and 2 "steerers" and then as the antenna gets to the top, one of the
> steerers becomes the climber. 4 people is better but you do what you have
> to.
>
>
>
> The steerers are also "anti flippers" if the tag lines are positioned
> right.
> Its an art form to have the tag lines all releasable after the yagi is in
> place - but I digress.
>
>
>
> Ed N1UR
>
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>
>
>
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