Originally posted by smash123
Want to know what is the advantage of using PCM radio? Thanks
PCM radios are supposedly more glitch resistant, but they really aren't, they just handle interference differently than AM or FM radios. When an AM or FM radio gets interference, you controls behave in an erratic, random way. When a PCM radio encounters interference, the controls either hold at the last known "good" position, or go to a pre-set "failsafe" position. Most folks set their failsafe position for full brakes to prevent a runaway. I suppose it looks good, but imagine you get some interference near the end of the straightaway and your car goes to full brakes. I've seen it happen, the result was two destroyed cars instead of one. Still, the damage from a runaway might have been worse, so it's really up to the buyer which is the preferable scenario.
The disadvantage to PCM radios is that there is a bit of delay in the encoding of the signal compared to AM and FM radios, and another bit of delay when the receiver decodes and checks the incoming signal for errors before it allows the servos to respond. The delay is pretty small, but I can definitely tell the difference on the track and I won't race with PCM radios because of it.