Hi everyone.
I have build a simple vertical antenna using 4NEC2.
After the simulations, the software gives me a SWR (50 ohm) of 3.55 and an efficiency of 92.91%
The report says, infact, that with a transmission power of 100 Watt, 7 Watt are losed and 93 Watt are radiated on air.

But looking for the official tables of SWR, i see that a ratio of 3.55 of SWR corresponds to about 68% of real transmitted Power by the antenna (and 32% losed).

What is the truth?
Is SWR of 4NEC2 different from the official tables of SWR?

Thank you very much.

Giovanni Di Maria