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THE AM BULLETIN BOARD => Technical Forum => Topic started by: W6TOM on October 28, 2017, 03:36:48 PM



Title: Window Line, Clearances??
Post by: W6TOM on October 28, 2017, 03:36:48 PM
  Going to replace my coax fed, 80/40 meter dipole with a Window Line fed dipole and I am now in the process of determining how to route the Window Line into my garage where the shack is. I've played with a the same type of antenna while visiting both of my sisters in MA, it seems the Window Line is not bothered by proximity to non metallic things but I wonder what clearances I should try to maintain from electrical (AC) conduits and low voltage wiring which will be an issue in my garage.

   Any suggestions?? Thanks!!


Title: Re: Window Line, Clearances??
Post by: KD6VXI on October 28, 2017, 03:40:25 PM
The rule of thumb I read was three times the spacing.

IE, if the window line is spaced 3ninches, then keep it 9 inches from anything.

I also tend to twist it gently when going near metal.  It's a lineman thing lol.   

--Shane
KD6VXI


Title: Re: Window Line, Clearances??
Post by: KA0HCP on October 29, 2017, 02:07:48 PM
Advice I've seen over the years ranges from 2-8 times the width of the balanced transmission line, with 2-4 times being suggested most often.  

I haven't seen any engineering analysis justification.
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