In a message dated 96-06-22 22:41:04 EDT, you write:
>A short length of pipe with its own pulley acting as an anti-roll device,
>PERFECT! We use the rope over the ends of the boom for leveling the beam as
>it goes up, but the rolling of the boom and element/guy headaches that ensue
>has always been a hassle.
Hello, tramline fans --
The "tiller" pipe is a new one on me but a clever (and automatic)
solution to a typical antenna's propensity to turtle (roll over) and to get
it over the top set of guy wires. Here's a couple of related thoughts.
One method is to use a tag line that was described in excellent detail
by K8DO. I use this technique to tip the elements to near vertical as the
antenna approaches the top set of guys and even branches for tree
installations. You don't have to remove the top set of guys to get the
antenna up. Use of tag lines gives you more control of the beam attitude.
The other thing that may help is to mount the elements BELOW the boom
instead of on top. Why are the mounted on the top anyway (KLM, homebrew,
etc)? You're fighting gravity and the darn thing can turtle, or pitchpole,
on you. Force 12 antennas mount the elements below the boom and it sure
makes sense to me.
73, Steve K7LXC