[MAMS] loop yagi material question

[Dr. Gerald N. Johnson]

You might find that information in the old red covered RSGB Microwave 
Collection, or the modern International Microwave Handbook. I had an 
extra collection but sold it last night and I'm 110 miles from my other 
copy and that handbook.

The 060 material is going to be fairly resistant to bending in a circle 
without a roll forming machine, its a lot stiffer than .032. The bending 
stiffness is proportional to the thickness cubed.

The relative stiffness of .032 is 32 and .060 is 216, 6.5+ times 
stronger in bending.

Since the .032 loops have some attraction for bird and wind damage I 
expect that if .060 was practical it would be the preferred material.

73, Jerry, K0CQ

On 7/28/2012 2:45 PM, Danny Pease wrote:
> Anyone one know if I can use .060 thick material for loop yagis instead of
> .032 without having to adjust element dimensions?. If I did have to adjust
> dimensions, does anyone know what the fudge factor might be?
>
> What I am contemplating is extending the length of a pair of old 33 element
> 902 loop yagis I have to 47 elements and I have a fair amount of .060
> aluminum on hand.
>
> I thought I would ask here before I check with K1WHS.
>
> Danny NG9R
>
>