Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

•.—TRANSMISSION THROUGH A NETWORK 435/),., - 1 ~2tt X 25,000 X 2tt X 100 / 2tt X 6 \ 22tt X 80,000~ 0.28 radian or 16 degrees.Since the phase discrepancy for this Mth term is less than 20 degrees,a quasi-steady state (such as postulated) may be assumed to exist. InFigure 2, (a) bears out this conclusion nicely; the discrepancy between(a) and the static-network response characteristic is obviously everywhereless than 15 per cent of the peak.Step-by-Step Procedure for Calculating the Kesponse of aNetwork to a Frequency-Modulated WaveThe necessary steps for evaluating (15) as a function of either tor S> are organized and demonstrated in this section. The amplitudeinstantaneous-input-frequency response and phase-shift—instantaneous-input-frequencyresponse of a tuned amplifier will be calculatedusing the same parameters that were used experimentally to obtain(b) of Figure 2.I. Perform steps A, B, and C of the validity-test procedure.II (w). Prepare work sheets similar to Table I for several equallyspaced values of (S> —