OK, on to part 2. Here I am going to add in several configurations of angled radials. The patterns will be as follows:
- Pink will show 1/2 wavelength angled radials. Asked about by Needle Bender specifically.
- Green will be 1/4 wavelength angled radials. This was on my list of things to test, however, Needle Bender also asked about this.
- Red will be the shortened angled radials that you can purchase for this antenna.
- Blue will be the same blue patterns from the models above for comparison purposes.
There will be no model in this group at the height of six feet. Also, the half wavelength angled radials will start at twenty one feet in height.
So lets get started. Eleven feet in height.
16 feet.
Twenty one feet.
Twenty six feet.
Thirty one feet.
And finally 36 feet.
One of the models, there is an anomaly with one of the patterns. At twenty one feet, the 1/4 wavelength angled radials model is at a higher angle of radiation than the other models. I don't know why this is. I have looked at the model closely and cannot find any problems or errors. Perhaps it is just something about this configuration at this height?
What I am surprised at here is the 1/2 wavelength angled radials. It has as much, and sometimes more gain than the other models, however, it has a significantly weaker high angle lobe.
When it comes to angled radials, you can get a kit, or you can make them, use them for guy wires and such if you have to, insulate to the electrical length you are interested in. I would put the shortened angled radials such as you find in the radial kit, and the 1/4 wavelength angled radials that you can make and use as part of a guy system after horizontal radials. They don't affect gain much, or the angle of radiation (except for one anomaly) but they both control common mode currents rather well. I would put the half wavelength radials after the shorter angled radials mentioned above as they don't control common mode currents nearly as well, although they do still have some effect. I would put the isolated mast after all of these angled radials.
The DB
