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Old January 27th 14, 03:21 PM posted to rec.radio.amateur.antenna
Ralph Mowery Ralph Mowery is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 702
Default antenna theory made easy


"W5DXP" wrote in message
...
A resonant 1/4WL monopole with a good ground plane has a resonant
feedpoint impedance around 35 ohms which at 1kW results in only 187 volts
at the feedpoint. How anyone could consider 187 volts to be "a lot of
voltage" stretches the imagination.


If you really want to talk about "a lot of voltage", talk about the
voltage that exists at the tip top of that 35 ohm 1/4WL monopole when only
187 volts is being applied at the base feedpoint. I get more than 10,000
volts. Now that's indeed a lot of voltage.

--
73, Cecil, w5dxp.com


I am not sure what a lot of voltage is. There are many differant voltages
called high voltage. Some statt at 600 volts and some at 35,000 volts.

I think that any voltage that can cause heart problems or that you can not
hold on to without feeling a shock would be a lot of voltage.

The antenna you mentioned at 'only 187' volts would seem to me to be a lot
of voltage in the case of a dog peeing on an antenna. Sick you finger in a
light socket and see how long you can hold it there at 'only 120' volts.
Bet you say that is a lot of voltage.

As we all know it is not the voltage,but the current that causes problems.
Therefor in the above I will assume the voltage source has several amps of
current avaliable.




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