- 1. [TowerTalk] 10M 4:1 "Transformer" (score: 1)
- Author: Larry Banks via TowerTalk <towertalk@contesting.com>
- Date: Sat, 21 May 2022 22:02:12 -0400
- Hi All, I am designing a rather unique 10m FM vertical for my local repeater net. It has to fit into my attic, which is only 50" tall. I have this antenna designed, and it "should" work, but it has
- /archives//html/Towertalk/2022-05/msg00155.html (8,185 bytes)
- 2. Re: [TowerTalk] 10M 4:1 "Transformer" (score: 1)
- Author: David Gilbert <ab7echo@gmail.com>
- Date: Sat, 21 May 2022 21:26:18 -0700
- Is it a folded monopole? A 50 inch vertical section fed at the base looks to me (using EZNEC+) like it would have a native source impedance around 3.5 ohms, which a folded monopole with equal diamet
- /archives//html/Towertalk/2022-05/msg00157.html (8,943 bytes)
- 3. Re: [TowerTalk] 10M 4:1 "Transformer" (score: 1)
- Author: Jim Brown <jim@audiosystemsgroup.com>
- Date: Sat, 21 May 2022 23:31:15 -0700
- Hi Larry, A quarter-wave transformer having 25 ohm Zo would get you close enough for government work, and two 50 ohm coaxes in parallel would get you there! Depending on precise values of feedpoint Z
- /archives//html/Towertalk/2022-05/msg00158.html (7,928 bytes)
- 4. Re: [TowerTalk] 10M 4:1 "Transformer" (score: 1)
- Author: Stan Stockton <wa5rtg@gmail.com>
- Date: Sun, 22 May 2022 21:04:43 -0500
- Larry, I would suggest you consider an antenna that would look like a capital I or an H turned 90 degrees. Feed it in the center of the vertical part and make the top and bottom horizontal portions t
- /archives//html/Towertalk/2022-05/msg00159.html (8,993 bytes)
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