[Antennas] Question

Richard (Rick) Karlquist richard at karlquist.com
Thu Feb 5 09:54:13 EST 2009


Why a loop not a bent dipole?

Chris Boone wrote:
> Friend in a restrictive area wants to do this….run a loop around the 
> house at the eave….not sure what the length would be so assume non 
> resonant on any band….and probably 1200 sq ft in length…….if fed at a 
> “middle” point, any idea what the approx Z would be on the HF bands??? 
> We were discussing how to feed it; if it were ME, I would put an auto 
> tuner at the feedpoint and run coax back to the rig…..he has a 3yr old 
> manual tuner with coax and balanced out but doesn’t want to run balanced 
> through the wall or under the window in plexiglass, etc..sooo he wants 
> to use 4:1 balun at antenna and then 10-15 ft of RG8 to tuner…
> 
>  
> 
> Any thoughts on that guys??? He could probably get away with it but I 
> think a 4:1 may not be right…….your thoughts, comments and if anyone has 
> modeling software to model it on 80-10, I would appreciate it.
> 
>  
> 
> Chris
> 
> WB5ITT
> 
> 
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