"AI4QJ" wrote in
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"Owen Duffy" wrote in message
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"AI4QJ" wrote in
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Calculates DC resistance of wi

Now, 18 AWG wire is .00751 Ohms/foot. At 53 feet,

R(L) = 0.398 Ohms


And proceeds to use DC resistance of wire to analyse performance at
RF:

Phase angle: tan(theta) = 3600/0.398 = 9045

What is the skin depth of 18AWG wire at 4 Mhz? How does that affect
resitance? Quadruple? Even if, how does that affect arctan(theta)?
Answer: gauranteed to easily round up to 90 degrees.

It does appear that you knew the outcome you wanted, you expected the
phase angle to be close to 90°, but instead of being honest that it was
an assumption, you used an incorrect development and then say it doesn't
matter anyway.

Not an unfamiliar technique!

Owen