[Amps] Voltage at feed point

[Roger D Johnson]

Rob & Terri Sherwood wrote:
> Anyone know a formula for calculating the voltage at the feed point of a 
> vertical if you know the resistive and reactive values and the power? 
> Example:  160 meter inverted L, R = 80 ohms, X = +420j & P = 1500 
> watts.  73, Rob, NC0B.
> 
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Just as a check, I ran the numbers through Dean Straw's TLW3 program.
With a low-pass L matching network using a series inductor of 28.6 uH
and a Q of 300, a 458 pf shunt cap from antenna base to ground it shows
a voltage of 1820 volts RMS or 2573 volts peak and a tuner loss of .15
db.

73, Roger

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