ORIGINAL: BarracudaHockey
Bruce while it may not be analog in the true sense, there's no error checking and any noise in the signal is passed to the servos, where a PCM signal is protected against that by use of a check sum.
While I agree there is no error checking and that PCM verifies via check sum, the passing of noise depends on the quality of the RX and applied filtering.
Nobody is arguing that PCM isn't better in most respects.