An 80- transmission line operating at 12 MHz is terminated by a load ZL. At 22 m

An 80-Ω transmission line operating at 12 MHz is terminated by a load ZL. At 22 m from the load, the input impedance is 100 – j120Ω. If u = 0.8c,
(a) Calculate TL, Zin,max, and Zin, min.
(b) Find ZL, s, and the input impedance at 28 m from the load.
(c) How many Zin,max and Zin,min are there between the load and the 100 – j120Ω ft input impedance?