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ToKenwood KT-917 1979, $1,000, photo, schematic, detectorMPX scheme pulse count detector, discrete CMOS switch driven with slimed pulses no charge injection cancellation generated by analog means, MPX PLL generated 38k with HA11223 chip search eBayThe FM-only KT-917 was the successor to the 600T as Kenwoods flagship tuner. The KT-917s front-panel controls are identical to those of the 600T, whi...