I quoted Terman, saying:
"The power delivered to the load under these conditions (a conjugate
match) is termed the AVAILABLE POWER of the power source."

The match between source and load is the best it can be and can`t be
improved when you have a conjugate match. A conjugate match is an
empowerment but does not cause you to put out any particular power.
That`s up to you.

Suppose you have a conjugate output match to a Class-B power amplifier
you are driving with your SSB transmitter. Instantaneously, average
power from the amplifier is following the modulation. A single steady
tone ideally produces a particular output at at one radio frequency.
Want more output? Increase drive to the amplifier. Want less? Reduce
drive to the amplifier. You may have a conjugate match under only one
condition, some conditions, or under all conditions, but given life`s
usuall imperfections, I would place no bets, except against all
conditions.

Best regards, Richard Harrison, KB5WZI