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Thread: 3PKS PCP VS PPM
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Old 03-09-2009 | 06:55 AM
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Duster_360
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Of the FM modes you question the oldest is PPM - its also the slowest. The other mode is PCM - pulse code modulation, which came after PPM, is faster and transmits more information. Then came HRS mode - High reposnse speed which requires the use of digital servos, this is the fastest of the FM modes.

Failsafe is available only for HRS/PCM modes.
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