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Old April 11th 06, 08:39 PM posted to rec.radio.amateur.antenna
Richard Harrison
 
Posts: n/a
Default Current across the antenna loading coil - from scratch

Gene, W4SZ wroyte:
"However, the physical entities do not have two values at once in the
same time and place."

All that is needed to prove energy in the incident and reflected waves
each has its own values is to separate the two with a directional
coupler as the Bird Thruline wattmeter does. It gives you forward and
reverse powers at the same place anywhere you choose along a
transmission line. The standard device is calibrated for 50-ohm lines so
it is easy to convert the power indicationsw to volts and amps if
desired.

Take what Tom, W8JI wrote today:
"I take it you are saying you think current can flow in two directions
at the same instant of time in a conductor, can be "lost" from a single
conductor through radiation and resistance without a shunting impedance,
conservation of chrge isn`t important and Maxwell`s equations are
wrong."

Of course, except for Maxwell!

Maxwell`s equations work.

Current can flow in opposite directions past a point.

Shunting impedance makes a voltage divider with series impedance, but
that`s not the only way to get a difference between points on a
conductor or a coil.

Conservation of charge isn`t an issue with r-f current in a wire or
coil.

Tom`s posting is nonsense.

Best regards, Richard Harrison, KB5WZI