Dittos the 127's are PPM Rx's only. Probably the most common Futaba Rx out there. I beleve out of production now. It may have come packaged with certain Tx's in the past that had dual modulation capability PPM or PCM but the 127 is PPM only. If one wanted to utilize PCM with the Tx then a Futaba PCM Rx needed to be purchased.

I am going to go out on a limb as I suspect no manufacturer has ever produced a dual modulation type PPM and PCM Receiver.

John