[TowerTalk] Re: 40m beam with wires dangling down

[david jordan]

Yes, you would modify the stepper such that when the copper element 
inside the fiberglass tube reached full extention the copper tape would 
make a connection with the dangling wire.

I don't have a stepper so I don't have a mechanical solution for the 
contact arrangement that I can describe for you.  I'll bet there are 
skilled folks on this reflector who could come up with something that 
works well and last a long time.

Have Fun,
dave
wa3gin

gdaught6 at Stanford.edu wrote:

>Hi all,
>
>  
>
>>I had a 3ele of that sort up for a few years, made of 14m fiberglas elements,
>>(7m either side) with approx 3.5m wire dangling down either side.
>>Worked very well, only in windy situation the dangling wires start swinging
>>and so does the SWR and (I presume) the pattern.
>>    
>>
>
>  
>
>>At 10:15 05.11.2003 -0500, WA3GIN wrote:
>>    
>>
>>>One could argue that bending the element 90 degrees does not have the 
>>>effects you discibe as linear loading.
>>>      
>>>
>
>  
>
>>>>>Folding the element does little to reduce the performance. It looks 
>>>>>hokie, but it's simple, light weight, more efficient than lumped 
>>>>>inductance. The wires have to clear whats underneath but it's a 
>>>>>          
>>>>>
>
>I can't visualize how this works.  On an aluminum antenna, sure.  But how does 
>hanging a wire on the end of the fiberglas tubes of a steppir do much of anything?  If 
>you can get electrical contact to the tape inside, ok.  
>
>Can someone help me with what I'm (obviously) missing?
>
>73,
>
>
>George T. Daughters, K6GT
>
>
>
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>