アンテナチューナー(ICOM AH-4)を用いると、同じアンテナでVSWRの値はほぼ1.0になります。
freq1=7.02387 MHz, freq2=7.02408 MHz amp(v2/v1)=0.985099, phase(v2/v1)=0.00860836 rad v1=(1,0i), v2=(0.985063,0.00847999i), v3=(1.01494,-0.00847999i) z=(0.970428,0.0164633i), z50=(48.5214,0.823164i) gamma=(-0.0149372,0.00847999i), abs=0.0171765, arg=150.416 deg vswr=1.03495 cable_length=20 m, velocity_factor=0.67 , phase_toward_load=143 deg