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NB

Yes that's what i mean.


Can you explain why you think the gainmaster has phase correction in order for the currents to be in phase over 5/8 of radiator.


All i see is an extended t2lt coaxial dipole using stub matching & capacitive coupling to match the higher feedpoint impedance.

and some fancy advertising.


downside of stub matching is vswr on the coax above the stub is always high reducing power rating for the coax.


Rg58 with high vswr won't take 500w fm.


Sirio could have made the gainmaster longer.