/diy/ - Do It Yourself

>>1447817
An SWR meter shows if what your Standing Wave Ratio is. Think of SWR as resistance to your signal getting out (that's the glib interpretation) and the reflected energy can damage your radio if it's too high. Ideally, you want a ratio of 1:1 but anything 2:1 or lower is best. Never let it get higher than 2:1 unless you want your radio to die quickly.

You basically read the needle while you have the microphone on and do a test count or just talk.