points
first off, i have not read all the replies so if i repeat something sorry. someone asked for the make of receiver with the built in glitch counter? Schulze make it. there may be others. pcm v ppm. pcm does mask/ filter out interference. don't ask me how, but it helps. BUT you should not cure an aircraft with a dodgy signal using a ppm receiver by putting in a pcm receiver instead. this may cure the symptoms, but it does not cure the fault. it is good policy to get your aircraft glitch free on ppm with a good range check. THEN fit a pcm receiver if you wish for belt & braces insurance so to speak. using a glitch counting receiver is a big help as it picks up the glitche's you don't notice. just a point here, i'm in the UK on 35mhz, i don't know if schulze make receiver's on 72mhz?