[TowerTalk] Air Core Choke Baluns

[Brent Childers]

To All,
 
I was reading about Air Core 1:1 Choke Baluns on this page:
 
http://www.hamuniverse.com/balun.html
 
One thing caught my eye.
 
"The coil winding must not be placed against a conductor."
 
This caused me to think about how I had attached the choke baluns on my existing antennas.  Usually I would tape the outside of the balun directly to the boom ahead of the driven element.  
 
Three questions:
 
1. Is the statement in regard to not placing an air core choke balun against a conductor true?
2. If so, what are the ramifications?
3. Should I be mounting the balun to my antennas using a different method?
 
If someone could point me to a proper reference, or provide their experiences would be appreciated.
 
73 - Brent
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