In PhilB’s “Ultimate Part 15 Installation”
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we utilize 64 ground radials of 30-foot length.
In PhilB’s “Ultimate Part 15 Installation”
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we utilize 64 ground radials of 30-foot length.
But as with typical outdoor designs, only the 3-meter vertical antenna is driven by a loading coil.
WHAT IF 64 additional loading coils drove each of the ground radials?
WOULD each radial think it was longer than it was?
WOULD this make shorter radials, perhaps only 16-feet long, think they were longer?
The building of such a space-age antenna would become Outdoor Art of major significance.
Loading of Buried Radials
These are good questions, for which accurate responses could be posted.
However in light of recent comments about detailed technical posts on Part15us, some may hesitate to respond to such questions.
Mystified
Rich, I am not up to date on the limitation on detailed technical postings.
Rather than making detailed technical postings, perhaps you can inform me as to the inhibiting element.
Inhibiting Element
Without putting too fine a point on it, check the posts on this board of yesterday, 4 Sep 2012, which included this clip:
There’s an old saying that certainly applies here. When you want to look extremely knowledgeable, you baffle them with BS.
Perhaps that author would be willing to post his responses to your questions, as a model for others to follow.
I See
I see.
Well, thank you.
Buried Loaded Ground Radials
Don’t see how loaded ground radials increases the contact footprint of the radials when their physical size is still short, meaning physical contact with the dirt is unchanged.
What comes to mind in this is Neil’s great “water fountain” explanation to a question about the ground system.
How do you increase the size of the catch pan below to collect more of the water shooting out the spout to have more return path without increasing it’s physical size? Though each radial would be loaded with respect to resonance of the system, how does the loading of that radial “stretch” the length of that radial physically with it’s contact with the Earth?
RFB
Two Discussions
It took a few minutes of thinking, but then I realized I am asking two questions in one.
I am asking about ground radials in the dirt, which was addressed in the reply from RFB.
But I am also wondering about above-ground “artificial” grounds, also known as ground-planes located above the earth, such as baseboard indoor ground systems or elevated ground-planes on poles.
It’s only been mentioned a few times in these posts, but an AM ground plane can exist in the air, consisting of long-wires stretched horizontally from a center pole to a circle of poles on the outer diameter of a circular space.
Can loading coils improve raised ground planes?
Elevated
I believe someone linked to a ham radio article about loaded ground plane radials, which led to discussion of adding loading coils to ground radials on an elevated MW 3 meter antenna, such as one sitting on a flat roof, etc.
Short Radials for Ground Plane Antennas
RFB
Mucho Grassy-iss
Oh Boy the link on Short Radials is exactly the kind of thing being searched at this time.
Very good find.