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Re: [TowerTalk] 80m loading coil for 18-HT

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 80m loading coil for 18-HT
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 20 May 2025 15:29:06 -0700
List-post: <mailto:towertalk@contesting.com>
On 5/20/2025 2:46 PM, kj6y--- via TowerTalk wrote:
Get one of the mobile coils from Hi-Q.  Then with a 12 volt supply and 2 way 
switch you can tune anywhere.

Not necessarily the best solution -- modeling software can show differences in radiation efficiency for one solution as opposed to another. An important limitation of those mobile coils is that they have to go down the road.

As Jim Lux suggested, Brian's design software for inductors is excellent.

73, Jim K9YC

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