[Interference-free automatic cardiac leads for health-related running]

An autocardioleader of the PKC-2 design intended for the control of the health running speed according to the heart rate is depicted. The device is characterized by a high interference-killing feature dependent on the R wave selector. The selector is fitted out with a band-pass filter, automatic gain control, and a shaper for standard impulse formation. The parameters of the band-pass filter have been optimized with the aid of the theory of optimum filtration for average spectral models of the signal (R wave) and jamming.