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#17
July 11th 12, 05:03 PM
posted to rec.radio.amateur.antenna
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common mode current
Szczepan Bialek wrote:
"Rob" napisa³ w wiadomo¶ci ... wrote: Boomer wrote: I looked at my antenna the other day while I was talking. I saw some jumping off. Szczepan has been right all along. Or maybe it was bird do do I saw falling. Anyway, something was coming down from my antenna. Me too but I know what it is; the insulation from the cheap Home Depot house wire I used to make the antenna. The damn insulation is hard to strip off when it is new but falls off all by itself after a couple of years in the sun. Maybe the insulation is falling off because of all the electrons that have tried to jump off the wire when you were transmitting, and became trapped inside the insulation? Your antennas are the diwire. From the radiating wire the electrons jump off and penetrate into the counterpoise wire. It would be interesting to know if is any difference in behavior of the different wires. From experience we all know that there is no difference between te behaviour of insulated or blank wires when used as an antenna. We use what is convenient. This sort of contradicts your claim that electrons jump off the wire, as this would not work as well with an insulated wire as with a blank wire. |
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