As always, L.B. has stimulated further discussion. My input deals
with the "element linkage" portion of L.B.'s note. Sometime in the
mid-sixties I toured a General Electric plant in the Syracuse area.
One of the demonstrations was the shake-table used to vibration test
military (vacuum tube!) equipment. Question: Do any of the antenna
manufacturers run a shake/vibration test on their products? Seems to
me that such a test would be rather simple to implement and if performed
properly would certainly identify many of the problems so frequently
discussed on this reflector...Thanks L.B. for your message!!
73, George, N7GC
At 10:33 PM 10/19/99 -0400, L. B. Cebik wrote:
>
>On a home improvement show, I saw/heard reference to the use of Lexan as a
>window pane material in Florida as a shatter-resistant material for
>hurricane-prone areas.
>
>1. I wonder if this application of the material would have the good RF
>and physical properties of Lexan sheet in general.
>
>2. Is the material readily available--and, if so, through what sources?
>
>As a side note following the discussion of holding C3 elements at a
>constant spacing, I wonder if it would be better (or not) to use a system
>that pinned the spacer only to the longer/larger element, letting the
>smaller element slide in a slot or hole. Locking both elements to the
>spacer may create a rigid rectangle which would alter the element
>flexibilities. However, not sure that this would make a significant
>difference in element durability for either or both.
>
>-73-
>
>LB, W4RNL
>
>
>
>
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