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HASCO, Inc will be closed Monday and Tuesday, July 3rd and 4th in observance of the July 4th Holiday. All orders will be processed and shipped Wednesday, July 5th. Have a great holiday!

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Company Info

5214 Bonsai Street
Moorpark
CA 93021

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Ph: (888) 498-3242

Local: (805) 529-5085

Fax: (805) 379-2128

sales@hasco-inc.com


VSWR and Return Loss of Coaxial Cables

Voltage Standing Wave Ratio (VSWR) and Structural Return Loss (SRL) are basically the same - only different. Both terms are used to characterize the uniformity of a cable’s impedance along its length as it relates to reflected energy. VSWR is essentially the ratio of the Input Impedance to the average Characteristic Impedance as a result of signal losses due to reflections and is expressed as a ratio (1.xxxx:1). SRL is the measurement of reflected energy expressed in decibels (-dB). Connectors and termination techniques are major sources of reflected energy and can significantly deteriorate system VSWR or SRL. The difference between VSWR and SRL is no more than how reflected energy is measured.


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