On Thu, 22 Apr 2004 00:20:50 GMT, zeno wrote:
The problem, as I see it, with using the fixed masts as outside perimeter
configuration support structure for the specifically ordered interior shape is the
sag the inevitably occurs when wire is a rope and pulley distance away from the
supporting mast. I already see this with the tree supported antenna. The ropes drop
down and the wire is 8' or so lower than anticipated. This seems critical when the
masts are only 50' to begin with. How high, or shouls I say, what is the minimum
height for an acceptable Rhombic?

Hi Bill,

Think positively: how high will they be? 40 Feet? 10 Meters? One
quarter wave for 40M? This is not a hardship case. One half wave or
better high for 20M and above? No one's gonna let you cry in your
beer there either. And now for the classic "testimonial": it's gonna
be boomin! (what choice do you have?).

As a cautionary, don't try to pull out the catenary. The tension
rises with the tangent of the of the deflection angle. If you could
achieve perfect flatness, a breeze would snap the line.

73's Richard Clark, KB7QHC