[amsat-bb] Modeling the AA2TX Parasitic Lindenblad

Zach Metzinger zmetzing at pobox.com
Sat Jul 11 22:20:24 UTC 2020


On 07/10/20 19:43, Curt Laumann via AMSAT-BB wrote:
> My intuition is guided by a couple of semesters of E&M and a few decades of
> antenna building and testing.  BUT it's only my *intuition*, and I'd be
> very interested in hearing the results of any modeling!
> 
> As an aside, I'm also working to build this antenna with my newly-acquired
> 3D printer, using PETG in fact!  I'm redesigning the 70-cm Lindy as well as
> 2-m Lindy to use arrow shaft elements.  In this manner the antenna will be
> easy to disassemble and easily portablized.  Or transported  :)

Hello Curt,

Thank you for the encouragement. I wish I recalled enough of my EM 
Theory class for this, but I think I've repressed it ever since I eeked 
out of it with a passing grade. Probably because the professor started a 
class trying to derive something unrelated to homework or exams one day, 
got to the end, then realized he'd made a mistake in the first 5 
minutes. "You can just go back and fix that and it'll all work out."

I'm finishing up the 3D model right now, using openscad, and will kick 
off the print tonight.

I plan to put the model up on my webpage for any/all to use, modify, 
contribute back to, etc. once I have it working.

--- Zach
N0ZGO


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