Re: www.vlf.it update
I don't talk about the geometry of the lines up in the air.
Your photo shows a 3 phase supply system.
We need to look at the voltages only: in a 220 kV system we have
pahse A : u(t) = sqrt(2)*220000 * sin ( 2* pi*50 *t )
pahse B : u(t) = sqrt(2)*220000 * sin ( 2* pi*50 *t + 120 degrees)
pahse C : u(t) = sqrt(2)*220000 * sin ( 2* pi*50 *t + 240 degrees)
These phase offsets do have a prominent influence on the far field E vector.(a distance large in comparison to the distance between the lines - this is where geometry really counts)
Likewise for the current under your assumption of purely resistive load.
I think you do it right only the text was misleading to me.
- Dear All ,
the Austin transformer is a good solution .
I have used and maintained in around 13 AM transmitter arounr the worls ,
but was so stupid not to think about .. Hi ..
The 144 MHz solution can be used as a CW beacon .hi ..or going at the
frequency of some ISM bands .
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