A theoretical study was made of the surface impedanceZfor an electromagnetic transverse magnetic wave from free space on a magnetized ferrite surface moving normal to the plane of incidence. It was found convenient to decompose the surface impedance into two transfer impedances,Z1andZ2, which relate the hybrid reflected amplitudes to the amplitude of the incident wave. The surface impedance does not vary much with respect to the angle of incidence, so only the case of normal incidence (θi= 0°) was evaluated. Resonant poles at ƒc, [ƒc(ƒc+ ƒm)]1/2, and ƒc+ ƒmdominate the frequency characteristics ofZ1andZ2. The frequencies ƒcandƒmare the precessional frequency and magnetization frequency, res