International Telemetering Conference Proceedings / October 10-12, 1972 / International Hotel, Los Angeles, CaliforniaIRIG Document #L18-71 “Test Methods for Telemetry Systems and Subsystems” lists the notch noise loading test for establishing a figure-of-merit for frequency division systems. This paper reports measured effects of tape flutter on notch noise test data on pre-detection tape recorded FM carriers. The effects are explained on the basis of spectra of the output of the FM demodulator. The principal effect is to reduce the measured noise power ratio, NPR, in those notches at the low end of the baseband which overlap the flutter spectrum. The effect of tape flutter on FM/FM systems is reviewed.International Foundation for Telemete...