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Do we need the hoop on a sigma4/vector4000

bob85

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Mar 30, 2005
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england
I am making a winter antenna using old sigma4 parts, the old hoop is battered so I need to form a new hoop from 3/8 tube, or do I,

I don't see why I need a conductive hoop, It will have 1/4wave legs not the short avanti legs,

I removed the hoop from one of my 51mhz vector 4000's & tuned them both for the same frequency on our 6mtr band,
my buddy scaled a sirio827 for the same band,
when we get time we will be doing some tests to see if deleting the hoop saves tube simplifies the build & performs at least as well as with the hoop.
 

I am making a winter antenna using old sigma4 parts, the old hoop is battered so I need to form a new hoop from 3/8 tube, or do I,

I don't see why I need a conductive hoop, It will have 1/4wave legs not the short avanti legs,

I removed the hoop from one of my 51mhz vector 4000's & tuned them both for the same frequency on our 6mtr band,
my buddy scaled a sirio827 for the same band,
when we get time we will be doing some tests to see if deleting the hoop saves tube simplifies the build & performs at least as well as with the hoop.
Looking forward to seeing your results, Hope you are well.

73
Jeff
 

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