We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver' s output power verses the portion of that power reflected by the antenna system
About SWR, and use of SWR Meter, home made a swr meter. A PIC16F876 based, automatic 1.8 to 60 MHz Digital SWR/WATTmeter capable of displaying both the SWR and P.E.P.power values, with a bar graph on the second line tracking the instantaneous power. Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak.
Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver' s output power verses the portion of that power reflected by the antenna system About SWR, and use of SWR Meter, home made a swr meter.