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March 21st 14, 05:58 AM
posted to rec.radio.amateur.antenna
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Discone and feedline grounding
On Thu, 20 Mar 2014 21:12:57 -0700, Jeff Liebermann
wrote: http://802.11junk.com/jeffl/antennas/Discone/ http://802.11junk.com/jeffl/antennas/biconical/ I did some more tinkering with these two. Looks like the biquad also has holes in the gain plot, but shows more gain at more frequencies than the discone. I changed the characteristic impedance of the biquad to 150 ohms to get a better looking VSWR. Real ground and animated GIF's of the biconical antenna when I have more time. Diamond D-130 discone antenna model borrowed from: http://www.qsl.net/kp4md/modeling.htm I don't recall where I found the biconical. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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