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Radials
On 4/1/2014 12:21 PM, Channel Jumper wrote:
Radials on a elevated antenna only works if the radials are placed at or near the bottom of the antenna and are arranged at a 45* angle. Obviously you have not been doing antennas very long. This statement above is absurd and everyone here who has been making antennas or just using them for any length of time knows this. Making this kind of ridiculous statement removes all your credibility. Do a little research before saying such silly things. Any other angle and you might as well not have any radials at all! Again, just wrong and destroys any cred you might have had here. On a 10 -12 meter antenna, these radials would need to be at least 1/4 of a wavelength long - 9 feet and preferably 18 feet long to do any good! 1/4 wavelength works just fine. Longer does not help. If you coil them up they do not work as intended, but they might help a little. Forget calling them a ground plane, think of them more like a mirror. If you shine a beam of light directly at a mirror, the light is 100% reflected back towards the source. Electromagnetic energy is not the same as light. Look that up. If most of your radiated power is located at the bottom of the antenna and you can reflect that power up and forward - it is going to radiate better then something that is only partially effective. Anything that you don't reflect is adsorbed into the ground - good for keeping the worms warm at night, but not good for radiating RF.. Only a fool would become a ham and then move into an apartment! Look who is calling someone a fool. The sad truth is that most people do not understand what being a ham is all about anymore and most people thinks that amateur radio is a right and not a privilege. Keep trying to understand what being a ham is supposed to be. You might get there. Trying to be a ham while living in an apartment building would be like trying to be a Ocean liner captain while living in Oklahoma... Some hams are forced into an apartment by economic forces. They can still be a ham and operate. Your analogy sucks. The metal railing is much too small in rf area to be an effective counter poise - sorry but who ever told you this should go back to school and get a real education. You would not know anyway. |
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