I’ll explain how to use both methods. This method is an alternative when the VSWR option is not included. All that’s required is to measure the return loss (in dB) and use that to calculate VSWR using ...

Thus, a 1:1 ratio indicates there are no standing waves and the load is a perfect match. A 1.1:1 VSWR means that if there were 10,000 watts transmitted, the reflected power would be about 23 watts. A ...

At higher VSWRs, the plus and minus uncertainties diverge, so you need to calculate both. As an example, consider a Hewlett-Packard ESG-3000 microwave source operating at 900 MHz. Its VSWR is ...