[Amps] Triode vs Tetrode Amp

[Peter Chadwick]

I would say that a major point is that the majority of transceivers have output powers in the 100 - 200 watt region, and so a GG amplifier meets FCC requirements on gain while giving the maximum allowed output in the US: once you go to GG, then the advantages (whatever they are) of tetrodes become marginal. If you are making a 1.5 - 2kW output transmitter, it becomes a different matter, and the use of a high gain tetrode amplifier in the final stage can have advantages. But for amateur use, given the exciter powers available and the FCC regulations (which only the honest obey, thus somewhat negating the whole point of them!) a GG triode has advantages in commercial as well as technical terms.
When rolling your own, there may be other factors, such as a free (or very low cost) supply of tubes to take into account. When you are as mean as I am, that's an important point.....
73
Peter G3RZP