Which of the following can be determined with a directional wattmeter?
Standing wave ratio✓الإجابة الصحيحة
Antenna front-to-back ratio
RF interference
Radio wave propagation
الشرح
A directional wattmeter separates the forward travelling wave from the reflected one, and standing wave ratio is determined entirely by the ratio of those two powers. Reading both and computing the ratio gives the SWR.