To: | towertalk@contesting.com |
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Subject: | Re: [TowerTalk] vertical antenna feedpoint |
From: | Jim Brown <jim@audiosystemsgroup.com> |
Reply-to: | jim@audiosystemsgroup.com |
Date: | Sun, 16 Mar 2025 20:28:48 -0700 |
List-post: | <mailto:towertalk@contesting.com> |
On 3/16/2025 6:53 PM, john@kk9a.com wrote: I have been doing the opposite for decades. I shorten the vertical slightly and use a hairpin coil to create a 50 ohm feedpoint. Is one method better than the other? Good question, John! I have no idea. But I think the answer might lie in current distribution. We know, for example, that loading coils at a low-Z point in the antenna reduce radiation efficiency because it's a current maxima and inductors don't radiate. 73, Jim K9YC _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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