Frank, WE6CB wrote:
"Maximum power transfer with conjugate matching is undisputed."

Great! W2DU has made progress.

Frank also wrote:
"The problem with semi-conductor devices is that you cannot necessarily
conjugate match because the device operating parameters may be
exceeded."

True for certain voltages, currents, and drive. The maxima may not all
be acheived simultaneously. It`s true for vacuum tube amplifiers too.
The total device dissipation can`t be exceeded without reduced life
expectancy.

Another caution is the difinition of "maximum available power". In an RF
amplifier this is specific to a certain set of operating conditions.
Maxium available power is with fixed B+ (or minus) voltage and drive.
Current, too, is limited to non-destructive values.

Terman says on page 76 of his 1955 edition:
"Alternatively, a load impedance may be matched to a source of power in
such a way as to make the power delivered to the load a maximum. (The
power delivered to the load under these conditions is termed the
avalable power of the power source.)"

Best regards, Richard Harrison, KB5WZI