[TowerTalk] Shorting Straps on KT34XA

[K7LXC@aol.com]

In a message dated 99-10-03 17:30:31 EDT, W4EF@pacbell.net writes:

> I am in the process of preparing a used KLM KT34XA for 
>  re-installation on the tower. While I was cleaning-up 
>  and inspecting the elements, I noticed that it was 
>  difficult to get the shorting straps in the linear loading
>  sections to fit tight around the capacitor tubes (I think 
>  these are the so called type "C" straps), especially when 
>  they are coated with no-alox which is somewhat slick. 
>  This loose fit concerned me as it was my understanding that 
>  no-alox needs to be under pressure to work reasonably well. 
>  As a result, I picked up some 10 mil brass shim stock at the 
>  local hardware and shimmed a couple of the strap terminations 
>  so that they are now snug around the capacitor tubes. 
>  Unfortunately, this is a rather tedious process. 

      Big UGH to that. Then you've got dissimilar metals to deal with too. 
>  
>  Anybody out there know of a better solution, or am I overkilling 
>  this thing? I have 5 more elements to do, so any labor saving hints 
>  would be appreciated. 

      The looseness of these straps is well documented. After you've got it 
reassembled and working to your satisfaction, I would suggest using a TEK 
screw to pin everything together. A TEK screw is a chisel-point self-tapping 
screw that will go into aluminum in a couple of seconds. I prefer the 
Phillips head variety as they are easier to drive with my cordless drill. 
They don't have to be very long. This provides a good redundant electrical 
connection as well as mechanical connection. 

Cheers,   Steve   K7LXC
Tower Tech

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