An atu provides a conjugate match to allow maximum power transfer, your feedline in between the antenna and atu effectively becomes an impedance transformer allowing reflected power to join the forward power, in the case of using a feedline with little loss like balanced feeder then most of the power is radiated regardless of how high swr is, the atu makes the system resonant
An atu provides a conjugate match to allow maximum power transfer, your feedline in between the antenna and atu effectively becomes an impedance transformer allowing reflected power to join the forward power, in the case of using a feedline with little loss like balanced feeder then most of the power is radiated regardless of how high swr is, the atu makes the system resonant
great video
Thanks for a good educated lesson you made great video 73 de Gregor