"Owen Duffy" wrote
Yes, I am aware that is only adjusting the reactance of the load
presented, but yes, I was aware the R component doesn't vary over a
very wide range over the loop's operating frequency range, and that
if
X was tamed, the line losses would be acceptable.

====================================

Line loss on transmit is relatively unimportant. What matters is
accuracy of tuning up an extremely high Q loop on both transmit and
receive.
----
Reg, G4FGQ