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Analog power and SWR meter with 10 W and 100 W measurement ranges.

Digital power and SWR meter for 1.8–54 MHz, rated up to 120 W.

Their ratio is SWR.

SWR 1:1 means no reflected wave there.

SWR is the ratio of maximum to minimum voltage on a line with standing waves. It is related to reflection caused by an impedance mismatch.

SWR compares voltage maxima and minima on a line.

Consult each device’s manual for permitted power and SWR limits.

Radio calculators for wavelength, antennas, SWR, levels, link budgets and power supplies, with formulas, comparisons and learning guides.

Guided checks for reception problems, silent DMR and high SWR.

0.1–1 W, 100–600 MHz, 50 Ω, SWR better than 1.2:1

The ideal SWR is 2:1.

It does not automatically imply good SWR or a particular feed-point impedance.