I realized my error!

In my budget I counted the extra line loss caused by SWR twice:

- first time when I have added 1 dB to the loss of the forward and the return
wave

- second time when I took some power out of the antenna (to account for an SWR
of 4.5) and delivered it back to the transmitter

ARRL is always correct!

Sorry for the useless noise

Tony I0JX