In this context, it's not possible. You will hear about passive gain associated with antennas, but it's not really passive gain either. You are simply tuning the antenna to a narrow band of frequencies at the expense of others.
Thanks for your reply, I was pretty sure that "passive" was not what Steve ment. The term that I have seen used for the concept Steve was referring to is "buffer" amplification and is also used for impedance control of the pre-amp output stage.
BTW, most antennas have some directivity. Even dipole antennas, prefer horizontal incidence,
Last edited by jjwinterberg; 01-29-2015 at 07:56 AM.
I think you should read more about gain structure. The article I linked to above would be a good start. You can also start from the other end. Choose a listening peak SPL level, number of speakers, listening distance, speaker sensitivity, voltage gain of the amplifier of your choice and derive the voltage level fed to that amplifier to achieve your starting point.
These are "straw man," arguments. I think you should just admit that active preamps add gain and stop trying to refute points I did not make. I will not even entertain this one.
Never become so involved with something that it blinds you.