Resonance and the low impedance point.

[HomerBB]

To follow up on this, in order to match a 5/8 wave that is electrically short of 5/8 wavelength, you'll need some capacitive reactance in parallel with the antenna to ground. The Maco 5/8 wave has this very cap hidden in its design. The base insulator is formed from several inches of overlapping aluminum tubing separated by a dielectric insulator. That is the cap and what fails when you hit it with too many watts.

Sweet. I do appreciate this detail.
In another discussion I discovered this feature as a prominent not so hidden feature of the Wolf 5/8 antenna.
I should have read through this thread before I started the most recent one I did.
What a deal . . .

 

[Marconi]

Sweet. I do appreciate this detail.
In another discussion I discovered this feature as a prominent not so hidden feature of the Wolf 5/8 antenna.
I should have read through this thread before I started the most recent one I did.
What a deal . . .

Homer, Wolf did make what he called his .64 wave ground plane. I don't remember a 5/8 wave, but I wouldn't argue the difference. This .64 GP antenna did use a gamma match however, which is also a capacitor, but I think you guys are talking about something different, right?

Is this the idea you were using once...that you and I talked about on the phone, and you asked me to keep the info in confidence until you understood it better? If so, then that antenna was the Wolf .50_11M, an EFHW with no ground plane attached.

 

[HomerBB]

You know, Marconi, it may be this very thing. It's been a day or two. I think you shared this photo with me.