Quote:
Originally Posted by holl_ands 
IDRick re EZ-HD: I'm very close to making some runs...but a few more questions:
1. Diameter of tubular elements--don't assume they're all the same.
Try to be as accurate as you can, preferably using calipers.
2. What are boom dimensions - 1.00"x1.00"???
3. How far are the elements offset vertically above or below the boom??
Measure from boom to centerline of the element.
4. What is vertical offset of the top, middle & bottom parts of the Folded Dipole???
5. On the third element from the front, are the two halves electrically interconnected
(it may be hidden)??? Are they electrically connected to boom, elements or stubs???
6. For each element insulated from the boom, what is the closest metal-to-metal
Gap between the two halves of the element???
7. What is boom overhang distance measured from the center of the longest element???
8. Did the EZ-HD come with a standard 300:75-ohm Balun or some sort of Balun Box???
Either way, can you provide a photo...preferably inside the Balun Box if you have one...
[Macro photo hint--lots of light and use normal to wide vice telephoto lens setting.]
9. Can you provide a photo or sketch of the short stubs???
IDRick re EZ-HD: I'm very close to making some runs...but a few more questions:
1. Diameter of tubular elements--don't assume they're all the same.
Try to be as accurate as you can, preferably using calipers.
2. What are boom dimensions - 1.00"x1.00"???
3. How far are the elements offset vertically above or below the boom??
Measure from boom to centerline of the element.
4. What is vertical offset of the top, middle & bottom parts of the Folded Dipole???
5. On the third element from the front, are the two halves electrically interconnected
(it may be hidden)??? Are they electrically connected to boom, elements or stubs???
6. For each element insulated from the boom, what is the closest metal-to-metal
Gap between the two halves of the element???
7. What is boom overhang distance measured from the center of the longest element???
8. Did the EZ-HD come with a standard 300:75-ohm Balun or some sort of Balun Box???
Either way, can you provide a photo...preferably inside the Balun Box if you have one...
[Macro photo hint--lots of light and use normal to wide vice telephoto lens setting.]
9. Can you provide a photo or sketch of the short stubs???
1. Diameter of tubular elements: 3/8. The first and second tubular elements have a flared end (see image). Flare is 1/2" wide.
2. Boom dimensions: 1x1"
3. How far are the elements offset vertically above or below the boom??
First and second elements are 1/8 inch below top of boom
Third element is ¼ above boom
First and second tubular elements: 3/16 below boom
Third and fourth tubular elements: 3/16 above boom
4) Vertical offset of folded dipole:
top is 5/16 above boom
bottom is 5/16 below boom
middle is centered, ½ below top of boom
5) Third element, the two halves are electrically isolated from each other by the insulator. They are NOT connected to the boom, short stubs or any other elements.
6) The third and fourth tubular elements (from front) are insulated from the boom. The closest metal to metal gap between halves is 1-1/4 inches for both.
7) Not sure what you mean by boom overhang?? Is this the remaining portion of the boom (including mast mount)? The distance from center of last tubular element and the back of boom is 5 inches.
8) The balun is a standard 300:75 ohm matching transformer. Image attached.
9) Image attached
![http://***************/9/P/i.jpg[/IMG][IMG]http://***************/9/R/i.jpg[/IMG](http:/9/P/i.jpg%5B/IMG%5D%5BIMG%5Dhttp://***************/9/R/i.jpg%5B/IMG){kind=link}