[Lowfer] Longwave Antenna Question

KU4XR ku4xr at yahoo.com
Mon May 5 14:49:03 EDT 2008


Date: 5/5/2008	From: Andy Bell - KU4XR - EM75xr

Hello LOWfer, LFers, Experimenters, and such.

I have a Longwave antenna question, and I would appreciate any input and suggestions.
I am collecting the parts to build a LOWfer xmtr for next Northern Hemisphere winter.
I have a decent portion of land, but no easy way to erect a vertical, and ground radials
would be a problem, so I have been thinking about a tuned xmit loop for 184KHz.
My question is; From your experience, ( or opinions ), which would perform better overall,
a loop mounted in a vertical position ( more difficult for me ) , or in the horizontal position,
which I could support with poles at about 20' height ( approx. 7 meters ) above ground.
If I understand correctly, a loop does not radiate off the sides, so if mounted horizontally,
there would be ( almost ) no upward, or downward radiation, but the loop should radiate 
at very low angles in an omnidirectional pattern, as a surface wave. But would any of this matter
at the low frequency and 15 meter size limit for the antenna ??

Question #2: is there any advantage to a triangle ( 3 sided ) over a 4 sided loop ?? 
Again, mounted vertically versus horizontally. 

Thanks for any information, I will appreciate it. If you wish to do so; send your reply
directly to me at:  ku4xr - @ - yahoo.com

73, from Andy Bell - KU4XR - EM75xr


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