kb2vxa said:
Vertical beamwidth? Never heard of it,
Once again you prove you know very little about a field you try to show your expertise in.
kb2vxa said:
beam width refers to the azimuthal polar pattern of a directional antenna which it is not. If you mean elevation radiation angle that's another story.
Beamwidth can be horizontal or vertical.
Radiation angle would describe the center line of the mail lobe. Beamwidth is usually described using the -3dB points.
kb2vxa said:
Ask N_Jay if you can make any sense out of 90 +/- 45 which gives you anything from straight up to straight down or 0-180 degrees. EH?
Your display of ignorance continues.
While the answer was intended to be somewhat humorous, it is also accurate. For a whip antenna I would expect the -3dB points to fall somewhere between 22.5 deg and 90 deg off the mail lobe peak. (Hence a beam width of between 45 deg and 180 deg)
So the answer your "EH?" is "DUH!"
kb2vxa said:
What's this have to do with the elevation pattern? How many lobes? How big are they? At what angles are those lobes? What does the pattern look like? EH?
Sorry for not drawing pictures for you. Next time I will have to remember that I am explaining this for a 3 year old and bring my crayons.
kb2vxa said:
I like your math N_Jay, you'd confuse Einstein.
No confusion there at all. It is your unwillingness to replace your incorrect beliefs with knowledge that have confused you.
Why don't you work on your inability to use the quote feature for a while. Wen you master that, we can discuss antenna radiation patterns. (I'll bring the crayons)
kb2vxa said:
Why not use EZ Nec, model it for yourself and end all this?
Wow, high power tools for a low power problem.
Maybe you have relied on the tools so much you have lost the ability to grasp the fundamentals of the problem. Any technician can plug numbers into a program. Engineers understand what the program is doing and have an expectation of the results before starting.
