[Amps] Transceiver Output Impedance

[Robert Carroll]

I have been told that modern solid state HF transceivers have been designed
to deliver rated power into a stated load resistance-almost always around 50
ohms-but that their effective internal impedance looking into the output
port while it is active and delivering rated power is nowhere near 50 ohms
but rather closer to a few ohms if you can define such an impedance at all.
Is this more or less accurate?  I ask in connection with the 87A input match
problems Rit Nesbitt mentioned a few days back on this reflector.

 

73

Bob W2WG