Effects of Cable Length and Attenuation on Structural Return Loss (1966)
By Clay Mahronic
To determine whether a coaxial cable will function properly in a community antenna television system, the cable's voltage standing wave ratio (VSWR) must be determined for the frequency band in which it will be used. Normally, CATV cables are manufactured in lengths of at least 1,000 feet. Smaller diameter variations unavoidably occur along such lengths. These diameter variations cause impedance changes which collectively raise the cable VSWR.
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