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Radials

Sep 14th, 20:12

VK4ARC

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Hi,
When using a vertical with radials, do the radials need to be straight?
Thought about curved (arc), zig-zag, bent at 90 degree or in a circle. The goal is to use a vertical in a small space.
Thank you for any comments.
-73
Rob
N3XUB/VK4ARC
Sep 15th, 08:22

W1VT

Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
I don't recall studies showing a benefit to doing that.

Bending antenna wires typically results in a loss of efficiency. It is hard to make something small without giving something up.

There are studies that show that short straight radials are a good compromise if you use more radials. This is a practical option for a small space.

https://ncjweb.com/bonus-content/k3lcmaxgainradials.pdf

https://owenduffy.net/grabber/cs07/index.htm
This study compared four elevated radials versus eight elevated radials. You may find the techniques involved useful for making your own comparisons.

Zak Lau W1VT
ARRL Senior Lab Engineer
Sep 15th, 19:11

VK4ARC

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Thank you for this information.

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