I use PCM in my gas-engine-powered planes, but do so knowing that PCM often masks noise problems that should be cured. I do a thorough engine-off noise check followed by an engine on noise check. during the checks, I check not only where I lose control and where I regain it, but where fail-safe takes effect, etc.


The way I like to look at it is that noise will be present with either system if present at all, but the PCM receiver is more likely not to react to the presence of the noise. However, it is my understanding that a PCM receiver will ignore the data packets associated with the noise....and if you are giving commands to the plane during that time, the plane will not react to your commands.

Do a good noise check with either system (PPM por PPM), and cure any problems you find, and you will have confidence in the plane...

Much has been said about this subject in the radio forum. You may wish to do a search and read a bit about this.

Just my .02

--Sean