Consider:
A Rangemaster with a 3 meter antenna mounted 20 to 30 feet high.
Should the 4 radials be slightly longer than antenna length?
or...
Consider:
A Rangemaster with a 3 meter antenna mounted 20 to 30 feet high.
Should the 4 radials be slightly longer than antenna length?
or...
Should they be 1/4 wave at 1610 which is the operating frequency?
234 / 1.610 = 145.3 feet
Thanks in advance.
Since this has been up for 6 days with no comments, I guess it should be removed?
It could be that none of us has a good answer. I know I don't. Let's go with this bump and see what happens.
Neil
The engineer in this article recommends 10' long radials for frequencies above 1000 KHz and 20' radials for frequencies below 1000 KHz. The article has a sketch that shows a clever way to design the system.
"The ISS patented PowerPlane® Factory-Assembled Groundplane is composed of 62 copper ground radials (12-gauge) tied to an inner ring of (4-gauge) copper wire. Sixty-two radials extend outward from the inner ring in every direction, creating a circular pattern." (See the drawing in the linked article.)
Click here for PowerPlane assembly information
Thanx. That was what I was lookin g for!
John