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eddie,

if you used odd multiple electrical 1/4waves of 75ohm coax terminated with 50ohm pure resistance input impedance seen looking into each line becomes


Zin =  Zo^2

         ---------

             Zl


the characteristic impedance of the line (75ohm) squared, divided by (50ohm X=0) load

 

if the loads are not 50ohm X=0 the phase relationship between current and voltage along the 75ohm lines shifts and all bets are off.